diff options
| author | Linus Torvalds | 2018-06-12 10:09:03 -0700 |
|---|---|---|
| committer | Linus Torvalds | 2018-06-12 10:09:03 -0700 |
| commit | 0725d4e1b8b08a60838db3a6e65c23ea8824a048 (patch) | |
| tree | 912edceeb90cbbb3b91ba0fd87cb2f96856f48ac | |
| parent | 89e255678fec5a1a9ed59664a62212d19873aedc (diff) | |
| parent | 93b7f7ad2018d2037559b1d0892417864c78b371 (diff) | |
Merge tag 'nfs-for-4.18-1' of git://git.linux-nfs.org/projects/trondmy/linux-nfs
Pull NFS client updates from Trond Myklebust:
"Highlights include:
Stable fixes:
- Fix a 1-byte stack overflow in nfs_idmap_read_and_verify_message
- Fix a hang due to incorrect error returns in rpcrdma_convert_iovs()
- Revert an incorrect change to the NFSv4.1 callback channel
- Fix a bug in the NFSv4.1 sequence error handling
Features and optimisations:
- Support for piggybacking a LAYOUTGET operation to the OPEN compound
- RDMA performance enhancements to deal with transport congestion
- Add proper SPDX tags for NetApp-contributed RDMA source
- Do not request delegated file attributes (size+change) from the
server
- Optimise away a GETATTR in the lookup revalidate code when doing
NFSv4 OPEN
- Optimise away unnecessary lookups for rename targets
- Misc performance improvements when freeing NFSv4 delegations
Bugfixes and cleanups:
- Try to fail quickly if proto=rdma
- Clean up RDMA receive trace points
- Fix sillyrename to return the delegation when appropriate
- Misc attribute revalidation fixes
- Immediately clear the pNFS layout on a file when the server returns
ESTALE
- Return NFS4ERR_DELAY when delegation/layout recalls fail due to
igrab()
- Fix the client behaviour on NFS4ERR_SEQ_FALSE_RETRY"
* tag 'nfs-for-4.18-1' of git://git.linux-nfs.org/projects/trondmy/linux-nfs: (80 commits)
skip LAYOUTRETURN if layout is invalid
NFSv4.1: Fix the client behaviour on NFS4ERR_SEQ_FALSE_RETRY
NFSv4: Fix a typo in nfs41_sequence_process
NFSv4: Revert commit 5f83d86cf531d ("NFSv4.x: Fix wraparound issues..")
NFSv4: Return NFS4ERR_DELAY when a layout recall fails due to igrab()
NFSv4: Return NFS4ERR_DELAY when a delegation recall fails due to igrab()
NFSv4.0: Remove transport protocol name from non-UCS client ID
NFSv4.0: Remove cl_ipaddr from non-UCS client ID
NFSv4: Fix a compiler warning when CONFIG_NFS_V4_1 is undefined
NFS: Filter cache invalidation when holding a delegation
NFS: Ignore NFS_INO_REVAL_FORCED in nfs_check_inode_attributes()
NFS: Improve caching while holding a delegation
NFS: Fix attribute revalidation
NFS: fix up nfs_setattr_update_inode
NFSv4: Ensure the inode is clean when we set a delegation
NFSv4: Ignore NFS_INO_REVAL_FORCED in nfs4_proc_access
NFSv4: Don't ask for delegated attributes when adding a hard link
NFSv4: Don't ask for delegated attributes when revalidating the inode
NFS: Pass the inode down to the getattr() callback
NFSv4: Don't request size+change attribute if they are delegated to us
...
38 files changed, 1240 insertions, 733 deletions
diff --git a/fs/nfs/callback_proc.c b/fs/nfs/callback_proc.c index a50d7813e3ea..ee81031cab29 100644 --- a/fs/nfs/callback_proc.c +++ b/fs/nfs/callback_proc.c @@ -40,7 +40,9 @@ __be32 nfs4_callback_getattr(void *argp, void *resp, rpc_peeraddr2str(cps->clp->cl_rpcclient, RPC_DISPLAY_ADDR)); inode = nfs_delegation_find_inode(cps->clp, &args->fh); - if (inode == NULL) { + if (IS_ERR(inode)) { + if (inode == ERR_PTR(-EAGAIN)) + res->status = htonl(NFS4ERR_DELAY); trace_nfs4_cb_getattr(cps->clp, &args->fh, NULL, -ntohl(res->status)); goto out; @@ -86,7 +88,9 @@ __be32 nfs4_callback_recall(void *argp, void *resp, res = htonl(NFS4ERR_BADHANDLE); inode = nfs_delegation_find_inode(cps->clp, &args->fh); - if (inode == NULL) { + if (IS_ERR(inode)) { + if (inode == ERR_PTR(-EAGAIN)) + res = htonl(NFS4ERR_DELAY); trace_nfs4_cb_recall(cps->clp, &args->fh, NULL, &args->stateid, -ntohl(res)); goto out; @@ -124,7 +128,6 @@ static struct inode *nfs_layout_find_inode_by_stateid(struct nfs_client *clp, struct inode *inode; struct pnfs_layout_hdr *lo; -restart: list_for_each_entry_rcu(server, &clp->cl_superblocks, client_link) { list_for_each_entry(lo, &server->layouts, plh_layouts) { if (stateid != NULL && @@ -132,20 +135,20 @@ restart: continue; inode = igrab(lo->plh_inode); if (!inode) - continue; + return ERR_PTR(-EAGAIN); if (!nfs_sb_active(inode->i_sb)) { rcu_read_unlock(); spin_unlock(&clp->cl_lock); iput(inode); spin_lock(&clp->cl_lock); rcu_read_lock(); - goto restart; + return ERR_PTR(-EAGAIN); } return inode; } } - return NULL; + return ERR_PTR(-ENOENT); } /* @@ -162,7 +165,6 @@ static struct inode *nfs_layout_find_inode_by_fh(struct nfs_client *clp, struct inode *inode; struct pnfs_layout_hdr *lo; -restart: list_for_each_entry_rcu(server, &clp->cl_superblocks, client_link) { list_for_each_entry(lo, &server->layouts, plh_layouts) { nfsi = NFS_I(lo->plh_inode); @@ -172,20 +174,20 @@ restart: continue; inode = igrab(lo->plh_inode); if (!inode) - continue; + return ERR_PTR(-EAGAIN); if (!nfs_sb_active(inode->i_sb)) { rcu_read_unlock(); spin_unlock(&clp->cl_lock); iput(inode); spin_lock(&clp->cl_lock); rcu_read_lock(); - goto restart; + return ERR_PTR(-EAGAIN); } return inode; } } - return NULL; + return ERR_PTR(-ENOENT); } static struct inode *nfs_layout_find_inode(struct nfs_client *clp, @@ -197,7 +199,7 @@ static struct inode *nfs_layout_find_inode(struct nfs_client *clp, spin_lock(&clp->cl_lock); rcu_read_lock(); inode = nfs_layout_find_inode_by_stateid(clp, stateid); - if (!inode) + if (inode == ERR_PTR(-ENOENT)) inode = nfs_layout_find_inode_by_fh(clp, fh); rcu_read_unlock(); spin_unlock(&clp->cl_lock); @@ -252,8 +254,11 @@ static u32 initiate_file_draining(struct nfs_client *clp, LIST_HEAD(free_me_list); ino = nfs_layout_find_inode(clp, &args->cbl_fh, &args->cbl_stateid); - if (!ino) - goto out; + if (IS_ERR(ino)) { + if (ino == ERR_PTR(-EAGAIN)) + rv = NFS4ERR_DELAY; + goto out_noput; + } pnfs_layoutcommit_inode(ino, false); @@ -299,9 +304,10 @@ unlock: nfs_commit_inode(ino, 0); pnfs_put_layout_hdr(lo); out: + nfs_iput_and_deactive(ino); +out_noput: trace_nfs4_cb_layoutrecall_file(clp, &args->cbl_fh, ino, &args->cbl_stateid, -rv); - nfs_iput_and_deactive(ino); return rv; } @@ -322,6 +328,8 @@ static u32 initiate_bulk_draining(struct nfs_client *clp, static u32 do_callback_layoutrecall(struct nfs_client *clp, struct cb_layoutrecallargs *args) { + write_seqcount_begin(&clp->cl_callback_count); + write_seqcount_end(&clp->cl_callback_count); if (args->cbl_recall_type == RETURN_FILE) return initiate_file_draining(clp, args); return initiate_bulk_draining(clp, args); @@ -420,11 +428,8 @@ validate_seqid(const struct nfs4_slot_table *tbl, const struct nfs4_slot *slot, return htonl(NFS4ERR_SEQ_FALSE_RETRY); } - /* Wraparound */ - if (unlikely(slot->seq_nr == 0xFFFFFFFFU)) { - if (args->csa_sequenceid == 1) - return htonl(NFS4_OK); - } else if (likely(args->csa_sequenceid == slot->seq_nr + 1)) + /* Note: wraparound relies on seq_nr being of type u32 */ + if (likely(args->csa_sequenceid == slot->seq_nr + 1)) return htonl(NFS4_OK); /* Misordered request */ diff --git a/fs/nfs/client.c b/fs/nfs/client.c index bbc91d7ca1bd..377a61654a88 100644 --- a/fs/nfs/client.c +++ b/fs/nfs/client.c @@ -969,7 +969,8 @@ struct nfs_server *nfs_create_server(struct nfs_mount_info *mount_info, } if (!(fattr->valid & NFS_ATTR_FATTR)) { - error = nfs_mod->rpc_ops->getattr(server, mount_info->mntfh, fattr, NULL); + error = nfs_mod->rpc_ops->getattr(server, mount_info->mntfh, + fattr, NULL, NULL); if (error < 0) { dprintk("nfs_create_server: getattr error = %d\n", -error); goto error; diff --git a/fs/nfs/delegation.c b/fs/nfs/delegation.c index 1819d0d0ba4b..bbd0465535eb 100644 --- a/fs/nfs/delegation.c +++ b/fs/nfs/delegation.c @@ -404,6 +404,10 @@ int nfs_inode_set_delegation(struct inode *inode, struct rpc_cred *cred, trace_nfs4_set_delegation(inode, type); + spin_lock(&inode->i_lock); + if (NFS_I(inode)->cache_validity & (NFS_INO_INVALID_ATTR|NFS_INO_INVALID_ATIME)) + NFS_I(inode)->cache_validity |= NFS_INO_REVAL_FORCED; + spin_unlock(&inode->i_lock); out: spin_unlock(&clp->cl_lock); if (delegation != NULL) @@ -483,38 +487,88 @@ out: int nfs_client_return_marked_delegations(struct nfs_client *clp) { struct nfs_delegation *delegation; + struct nfs_delegation *prev; struct nfs_server *server; struct inode *inode; + struct inode *place_holder = NULL; + struct nfs_delegation *place_holder_deleg = NULL; int err = 0; restart: + /* + * To avoid quadratic looping we hold a reference + * to an inode place_holder. Each time we restart, we + * list nfs_servers from the server of that inode, and + * delegation in the server from the delegations of that + * inode. + * prev is an RCU-protected pointer to a delegation which + * wasn't marked for return and might be a good choice for + * the next place_holder. + */ rcu_read_lock(); - list_for_each_entry_rcu(server, &clp->cl_superblocks, client_link) { - list_for_each_entry_rcu(delegation, &server->delegations, - super_list) { - if (!nfs_delegation_need_return(delegation)) + prev = NULL; + if (place_holder) + server = NFS_SERVER(place_holder); + else + server = list_entry_rcu(clp->cl_superblocks.next, + struct nfs_server, client_link); + list_for_each_entry_from_rcu(server, &clp->cl_superblocks, client_link) { + delegation = NULL; + if (place_holder && server == NFS_SERVER(place_holder)) + delegation = rcu_dereference(NFS_I(place_holder)->delegation); + if (!delegation || delegation != place_holder_deleg) + delegation = list_entry_rcu(server->delegations.next, + struct nfs_delegation, super_list); + list_for_each_entry_from_rcu(delegation, &server->delegations, super_list) { + struct inode *to_put = NULL; + + if (!nfs_delegation_need_return(delegation)) { + prev = delegation; continue; + } if (!nfs_sb_active(server->super)) - continue; + break; /* continue in outer loop */ + + if (prev) { + struct inode *tmp; + + tmp = nfs_delegation_grab_inode(prev); + if (tmp) { + to_put = place_holder; + place_holder = tmp; + place_holder_deleg = prev; + } + } + inode = nfs_delegation_grab_inode(delegation); if (inode == NULL) { rcu_read_unlock(); + if (to_put) + iput(to_put); nfs_sb_deactive(server->super); goto restart; } delegation = nfs_start_delegation_return_locked(NFS_I(inode)); rcu_read_unlock(); + if (to_put) + iput(to_put); + err = nfs_end_delegation_return(inode, delegation, 0); iput(inode); nfs_sb_deactive(server->super); + cond_resched(); if (!err) goto restart; set_bit(NFS4CLNT_DELEGRETURN, &clp->cl_state); + if (place_holder) + iput(place_holder); return err; } } rcu_read_unlock(); + if (place_holder) + iput(place_holder); return 0; } @@ -802,12 +856,14 @@ nfs_delegation_find_inode_server(struct nfs_server *server, if (delegation->inode != NULL && nfs_compare_fh(fhandle, &NFS_I(delegation->inode)->fh) == 0) { res = igrab(delegation->inode); + spin_unlock(&delegation->lock); + if (res != NULL) + return res; + return ERR_PTR(-EAGAIN); } spin_unlock(&delegation->lock); - if (res != NULL) - break; } - return res; + return ERR_PTR(-ENOENT); } /** @@ -822,16 +878,16 @@ struct inode *nfs_delegation_find_inode(struct nfs_client *clp, const struct nfs_fh *fhandle) { struct nfs_server *server; - struct inode *res = NULL; + struct inode *res; rcu_read_lock(); list_for_each_entry_rcu(server, &clp->cl_superblocks, client_link) { res = nfs_delegation_find_inode_server(server, fhandle); - if (res != NULL) - break; + if (res != ERR_PTR(-ENOENT)) + return res; } rcu_read_unlock(); - return res; + return ERR_PTR(-ENOENT); } static void nfs_delegation_mark_reclaim_server(struct nfs_server *server) @@ -887,7 +943,7 @@ restart: &delegation->flags) == 0) continue; if (!nfs_sb_active(server->super)) - continue; + break; /* continue in outer loop */ inode = nfs_delegation_grab_inode(delegation); if (inode == NULL) { rcu_read_unlock(); @@ -904,6 +960,7 @@ restart: } iput(inode); nfs_sb_deactive(server->super); + cond_resched(); goto restart; } } @@ -995,7 +1052,7 @@ restart: &delegation->flags) == 0) continue; if (!nfs_sb_active(server->super)) - continue; + break; /* continue in outer loop */ inode = nfs_delegation_grab_inode(delegation); if (inode == NULL) { rcu_read_unlock(); @@ -1020,6 +1077,7 @@ restart: } iput(inode); nfs_sb_deactive(server->super); + cond_resched(); goto restart; } } diff --git a/fs/nfs/dir.c b/fs/nfs/dir.c index 73f8b43d988c..7a9c14426855 100644 --- a/fs/nfs/dir.c +++ b/fs/nfs/dir.c @@ -1012,13 +1012,25 @@ int nfs_lookup_verify_inode(struct inode *inode, unsigned int flags) if (IS_AUTOMOUNT(inode)) return 0; + + if (flags & LOOKUP_OPEN) { + switch (inode->i_mode & S_IFMT) { + case S_IFREG: + /* A NFSv4 OPEN will revalidate later */ + if (server->caps & NFS_CAP_ATOMIC_OPEN) + goto out; + /* Fallthrough */ + case S_IFDIR: + if (server->flags & NFS_MOUNT_NOCTO) + break; + /* NFS close-to-open cache consistency validation */ + goto out_force; + } + } + /* VFS wants an on-the-wire revalidation */ if (flags & LOOKUP_REVAL) goto out_force; - /* This is an open(2) */ - if ((flags & LOOKUP_OPEN) && !(server->flags & NFS_MOUNT_NOCTO) && - (S_ISREG(inode->i_mode) || S_ISDIR(inode->i_mode))) - goto out_force; out: return (inode->i_nlink == 0) ? -ENOENT : 0; out_force: @@ -1039,13 +1051,15 @@ out_force: * * If LOOKUP_RCU prevents us from performing a full check, return 1 * suggesting a reval is needed. + * + * Note that when creating a new file, or looking up a rename target, + * then it shouldn't be necessary to revalidate a negative dentry. */ static inline int nfs_neg_need_reval(struct inode *dir, struct dentry *dentry, unsigned int flags) { - /* Don't revalidate a negative dentry if we're creating a new file */ - if (flags & LOOKUP_CREATE) + if (flags & (LOOKUP_CREATE | LOOKUP_RENAME_TARGET)) return 0; if (NFS_SERVER(dir)->flags & NFS_MOUNT_LOOKUP_CACHE_NONEG) return 1; @@ -1106,7 +1120,7 @@ static int nfs_lookup_revalidate(struct dentry *dentry, unsigned int flags) goto out_set_verifier; /* Force a full look up iff the parent directory has changed */ - if (!nfs_is_exclusive_create(dir, flags) && + if (!(flags & (LOOKUP_EXCL | LOOKUP_REVAL)) && nfs_check_verifier(dir, dentry, flags & LOOKUP_RCU)) { error = nfs_lookup_verify_inode(inode, flags); if (error) { @@ -1270,11 +1284,13 @@ static void nfs_drop_nlink(struct inode *inode) { spin_lock(&inode->i_lock); /* drop the inode if we're reasonably sure this is the last link */ - if (inode->i_nlink == 1) - clear_nlink(inode); + if (inode->i_nlink > 0) + drop_nlink(inode); + NFS_I(inode)->attr_gencount = nfs_inc_attr_generation_counter(); NFS_I(inode)->cache_validity |= NFS_INO_INVALID_CHANGE | NFS_INO_INVALID_CTIME - | NFS_INO_INVALID_OTHER; + | NFS_INO_INVALID_OTHER + | NFS_INO_REVAL_FORCED; spin_unlock(&inode->i_lock); } @@ -1335,7 +1351,7 @@ struct dentry *nfs_lookup(struct inode *dir, struct dentry * dentry, unsigned in * If we're doing an exclusive create, optimize away the lookup * but don't hash the dentry. */ - if (nfs_is_exclusive_create(dir, flags)) + if (nfs_is_exclusive_create(dir, flags) || flags & LOOKUP_RENAME_TARGET) return NULL; res = ERR_PTR(-ENOMEM); @@ -1640,7 +1656,8 @@ int nfs_instantiate(struct dentry *dentry, struct nfs_fh *fhandle, nfs_set_verifier(dentry, nfs_save_change_attribute(dir)); if (!(fattr->valid & NFS_ATTR_FATTR)) { struct nfs_server *server = NFS_SB(dentry->d_sb); - error = server->nfs_client->rpc_ops->getattr(server, fhandle, fattr, NULL); + error = server->nfs_client->rpc_ops->getattr(server, fhandle, + fattr, NULL, NULL); if (error < 0) goto out_error; } @@ -2036,7 +2053,15 @@ int nfs_rename(struct inode *old_dir, struct dentry *old_dentry, } else error = task->tk_status; rpc_put_task(task); - nfs_mark_for_revalidate(old_inode); + /* Ensure the inode attributes are revalidated */ + if (error == 0) { + spin_lock(&old_inode->i_lock); + NFS_I(old_inode)->attr_gencount = nfs_inc_attr_generation_counter(); + NFS_I(old_inode)->cache_validity |= NFS_INO_INVALID_CHANGE + | NFS_INO_INVALID_CTIME + | NFS_INO_REVAL_FORCED; + spin_unlock(&old_inode->i_lock); + } out: if (rehash) d_rehash(rehash); diff --git a/fs/nfs/export.c b/fs/nfs/export.c index ab5de3246c5c..deecb67638aa 100644 --- a/fs/nfs/export.c +++ b/fs/nfs/export.c @@ -102,7 +102,7 @@ nfs_fh_to_dentry(struct super_block *sb, struct fid *fid, } rpc_ops = NFS_SB(sb)->nfs_client->rpc_ops; - ret = rpc_ops->getattr(NFS_SB(sb), server_fh, fattr, label); + ret = rpc_ops->getattr(NFS_SB(sb), server_fh, fattr, label, NULL); if (ret) { dprintk("%s: getattr failed %d\n", __func__, ret); dentry = ERR_PTR(ret); diff --git a/fs/nfs/flexfilelayout/flexfilelayout.c b/fs/nfs/flexfilelayout/flexfilelayout.c index c75ad982bcfc..3ae038d9c292 100644 --- a/fs/nfs/flexfilelayout/flexfilelayout.c +++ b/fs/nfs/flexfilelayout/flexfilelayout.c @@ -2347,6 +2347,7 @@ static struct pnfs_layoutdriver_type flexfilelayout_type = { .id = LAYOUT_FLEX_FILES, .name = "LAYOUT_FLEX_FILES", .owner = THIS_MODULE, + .flags = PNFS_LAYOUTGET_ON_OPEN, .set_layoutdriver = ff_layout_set_layoutdriver, .alloc_layout_hdr = ff_layout_alloc_layout_hdr, .free_layout_hdr = ff_layout_free_layout_hdr, diff --git a/fs/nfs/inode.c b/fs/nfs/inode.c index bd15d0b57626..73473d9bdfa4 100644 --- a/fs/nfs/inode.c +++ b/fs/nfs/inode.c @@ -195,10 +195,16 @@ bool nfs_check_cache_invalid(struct inode *inode, unsigned long flags) static void nfs_set_cache_invalid(struct inode *inode, unsigned long flags) { struct nfs_inode *nfsi = NFS_I(inode); - bool have_delegation = nfs_have_delegated_attributes(inode); + bool have_delegation = NFS_PROTO(inode)->have_delegation(inode, FMODE_READ); + + if (have_delegation) { + if (!(flags & NFS_INO_REVAL_FORCED)) + flags &= ~NFS_INO_INVALID_OTHER; + flags &= ~(NFS_INO_INVALID_CHANGE + | NFS_INO_INVALID_SIZE + | NFS_INO_REVAL_PAGECACHE); + } - if (have_delegation) - flags &= ~(NFS_INO_INVALID_CHANGE|NFS_INO_REVAL_PAGECACHE); if (inode->i_mapping->nrpages == 0) flags &= ~NFS_INO_INVALID_DATA; nfsi->cache_validity |= flags; @@ -448,6 +454,7 @@ nfs_fhget(struct super_block *sb, struct nfs_fh *fh, struct nfs_fattr *fattr, st /* We can't support update_atime(), since the server will reset it */ inode->i_flags |= S_NOATIME|S_NOCMTIME; inode->i_mode = fattr->mode; + nfsi->cache_validity = 0; if ((fattr->valid & NFS_ATTR_FATTR_MODE) == 0 && nfs_server_capable(inode, NFS_CAP_MODE)) nfs_set_cache_invalid(inode, NFS_INO_INVALID_OTHER); @@ -534,6 +541,9 @@ nfs_fhget(struct super_block *sb, struct nfs_fh *fh, struct nfs_fattr *fattr, st inode->i_blocks = nfs_calc_block_size(fattr->du.nfs3.used); } + if (nfsi->cache_validity != 0) + nfsi->cache_validity |= NFS_INO_REVAL_FORCED; + nfs_setsecurity(inode, fattr, label); nfsi->attrtimeo = NFS_MINATTRTIMEO(inode); @@ -667,9 +677,13 @@ void nfs_setattr_update_inode(struct inode *inode, struct iattr *attr, spin_lock(&inode->i_lock); NFS_I(inode)->attr_gencount = fattr->gencount; - nfs_set_cache_invalid(inode, NFS_INO_INVALID_CHANGE - | NFS_INO_INVALID_CTIME); + if ((attr->ia_valid & ATTR_SIZE) != 0) { + nfs_set_cache_invalid(inode, NFS_INO_INVALID_MTIME); + nfs_inc_stats(inode, NFSIOS_SETATTRTRUNC); + nfs_vmtruncate(inode, attr->ia_size); + } if ((attr->ia_valid & (ATTR_MODE|ATTR_UID|ATTR_GID)) != 0) { + NFS_I(inode)->cache_validity &= ~NFS_INO_INVALID_CTIME; if ((attr->ia_valid & ATTR_MODE) != 0) { int mode = attr->ia_mode & S_IALLUGO; mode |= inode->i_mode & ~S_IALLUGO; @@ -679,13 +693,45 @@ void nfs_setattr_update_inode(struct inode *inode, struct iattr *attr, inode->i_uid = attr->ia_uid; if ((attr->ia_valid & ATTR_GID) != 0) inode->i_gid = attr->ia_gid; + if (fattr->valid & NFS_ATTR_FATTR_CTIME) + inode->i_ctime = fattr->ctime; + else + nfs_set_cache_invalid(inode, NFS_INO_INVALID_CHANGE + | NFS_INO_INVALID_CTIME); nfs_set_cache_invalid(inode, NFS_INO_INVALID_ACCESS | NFS_INO_INVALID_ACL); } - if ((attr->ia_valid & ATTR_SIZE) != 0) { - nfs_set_cache_invalid(inode, NFS_INO_INVALID_MTIME); - nfs_inc_stats(inode, NFSIOS_SETATTRTRUNC); - nfs_vmtruncate(inode, attr->ia_size); + if (attr->ia_valid & (ATTR_ATIME_SET|ATTR_ATIME)) { + NFS_I(inode)->cache_validity &= ~(NFS_INO_INVALID_ATIME + | NFS_INO_INVALID_CTIME); + if (fattr->valid & NFS_ATTR_FATTR_ATIME) + inode->i_atime = fattr->atime; + else if (attr->ia_valid & ATTR_ATIME_SET) + inode->i_atime = attr->ia_atime; + else + nfs_set_cache_invalid(inode, NFS_INO_INVALID_ATIME); + + if (fattr->valid & NFS_ATTR_FATTR_CTIME) + inode->i_ctime = fattr->ctime; + else + nfs_set_cache_invalid(inode, NFS_INO_INVALID_CHANGE + | NFS_INO_INVALID_CTIME); + } + if (attr->ia_valid & (ATTR_MTIME_SET|ATTR_MTIME)) { + NFS_I(inode)->cache_validity &= ~(NFS_INO_INVALID_MTIME + | NFS_INO_INVALID_CTIME); + if (fattr->valid & NFS_ATTR_FATTR_MTIME) + inode->i_mtime = fattr->mtime; + else if (attr->ia_valid & ATTR_MTIME_SET) + inode->i_mtime = attr->ia_mtime; + else + nfs_set_cache_invalid(inode, NFS_INO_INVALID_MTIME); + + if (fattr->valid & NFS_ATTR_FATTR_CTIME) + inode->i_ctime = fattr->ctime; + else + nfs_set_cache_invalid(inode, NFS_INO_INVALID_CHANGE + | NFS_INO_INVALID_CTIME); } if (fattr->valid) nfs_update_inode(inode, fattr); @@ -1097,7 +1143,8 @@ __nfs_revalidate_inode(struct nfs_server *server, struct inode *inode) goto out; } - status = NFS_PROTO(inode)->getattr(server, NFS_FH(inode), fattr, label); + status = NFS_PROTO(inode)->getattr(server, NFS_FH(inode), fattr, + label, inode); if (status != 0) { dfprintk(PAGECACHE, "nfs_revalidate_inode: (%s/%Lu) getattr failed, error=%d\n", inode->i_sb->s_id, @@ -1349,8 +1396,9 @@ static int nfs_check_inode_attributes(struct inode *inode, struct nfs_fattr *fat unsigned long invalid = 0; - if (nfs_have_delegated_attributes(inode)) + if (NFS_PROTO(inode)->have_delegation(inode, FMODE_READ)) return 0; + /* Has the inode gone and changed behind our back? */ if ((fattr->valid & NFS_ATTR_FATTR_FILEID) && nfsi->fileid != fattr->fileid) return -ESTALE; @@ -1400,7 +1448,7 @@ static int nfs_check_inode_attributes(struct inode *inode, struct nfs_fattr *fat invalid |= NFS_INO_INVALID_ATIME; if (invalid != 0) - nfs_set_cache_invalid(inode, invalid | NFS_INO_REVAL_FORCED); + nfs_set_cache_invalid(inode, invalid); nfsi->read_cache_jiffies = fattr->time_start; return 0; @@ -1629,7 +1677,8 @@ int nfs_post_op_update_inode(struct inode *inode, struct nfs_fattr *fattr) nfs_fattr_set_barrier(fattr); status = nfs_post_op_update_inode_locked(inode, fattr, NFS_INO_INVALID_CHANGE - | NFS_INO_INVALID_CTIME); + | NFS_INO_INVALID_CTIME + | NFS_INO_REVAL_FORCED); spin_unlock(&inode->i_lock); return status; @@ -1746,6 +1795,8 @@ static int nfs_update_inode(struct inode *inode, struct nfs_fattr *fattr) unsigned long save_cache_validity; bool have_writers = nfs_file_has_buffered_writers(nfsi); bool cache_revalidated = true; + bool attr_changed = false; + bool have_delegation; dfprintk(VFS, "NFS: %s(%s/%lu fh_crc=0x%08x ct=%d info=0x%x)\n", __func__, inode->i_sb->s_id, inode->i_ino, @@ -1780,6 +1831,9 @@ static int nfs_update_inode(struct inode *inode, struct nfs_fattr *fattr) !IS_AUTOMOUNT(inode)) server->fsid = fattr->fsid; + /* Save the delegation state before clearing cache_validity */ + have_delegation = nfs_have_delegated_attributes(inode); + /* * Update the read time so we don't revalidate too often. */ @@ -1802,12 +1856,9 @@ static int nfs_update_inode(struct inode *inode, struct nfs_fattr *fattr) /* More cache consistency checks */ if (fattr->valid & NFS_ATTR_FATTR_CHANGE) { if (!inode_eq_iversion_raw(inode, fattr->change_attr)) { - dprintk("NFS: change_attr change on server for file %s/%ld\n", - inode->i_sb->s_id, inode->i_ino); /* Could it be a race with writeback? */ - if (!have_writers) { - invalid |= NFS_INO_INVALID_CHANGE - | NFS_INO_INVALID_DATA + if (!(have_writers || have_delegation)) { + invalid |= NFS_INO_INVALID_DATA | NFS_INO_INVALID_ACCESS | NFS_INO_INVALID_ACL; /* Force revalidate of all attributes */ @@ -1817,8 +1868,12 @@ static int nfs_update_inode(struct inode *inode, struct nfs_fattr *fattr) | NFS_INO_INVALID_OTHER; if (S_ISDIR(inode->i_mode)) nfs_force_lookup_revalidate(inode); + dprintk("NFS: change_attr change on server for file %s/%ld\n", + inode->i_sb->s_id, + inode->i_ino); } inode_set_iversion_raw(inode, fattr->change_attr); + attr_changed = true; } } else { nfsi->cache_validity |= save_cache_validity & @@ -1850,13 +1905,14 @@ static int nfs_update_inode(struct inode *inode, struct nfs_fattr *fattr) if (fattr->valid & NFS_ATTR_FATTR_SIZE) { new_isize = nfs_size_to_loff_t(fattr->size); cur_isize = i_size_read(inode); - if (new_isize != cur_isize) { + if (new_isize != cur_isize && !have_delegation) { /* Do we perhaps have any outstanding writes, or has * the file grown beyond our last write? */ if (!nfs_have_writebacks(inode) || new_isize > cur_isize) { i_size_write(inode, new_isize); if (!have_writers) invalid |= NFS_INO_INVALID_DATA; + attr_changed = true; } dprintk("NFS: isize change on server for file %s/%ld " "(%Ld to %Ld)\n", @@ -1889,14 +1945,12 @@ static int nfs_update_inode(struct inode *inode, struct nfs_fattr *fattr) newmode |= fattr->mode & S_IALLUGO; inode->i_mode = newmode; invalid |= NFS_INO_INVALID_ACCESS - | NFS_INO_INVALID_ACL - | NFS_INO_INVALID_OTHER; + | NFS_INO_INVALID_ACL; + attr_changed = true; } } else if (server->caps & NFS_CAP_MODE) { nfsi->cache_validity |= save_cache_validity & - (NFS_INO_INVALID_ACCESS - | NFS_INO_INVALID_ACL - | NFS_INO_INVALID_OTHER + (NFS_INO_INVALID_OTHER | NFS_INO_REVAL_FORCED); cache_revalidated = false; } @@ -1904,15 +1958,13 @@ static int nfs_update_inode(struct inode *inode, struct nfs_fattr *fattr) if (fattr->valid & NFS_ATTR_FATTR_OWNER) { if (!uid_eq(inode->i_uid, fattr->uid)) { invalid |= NFS_INO_INVALID_ACCESS - | NFS_INO_INVALID_ACL - | NFS_INO_INVALID_OTHER; + | NFS_INO_INVALID_ACL; inode->i_uid = fattr->uid; + attr_changed = true; } } else if (server->caps & NFS_CAP_OWNER) { nfsi->cache_validity |= save_cache_validity & - (NFS_INO_INVALID_ACCESS - | NFS_INO_INVALID_ACL - | NFS_INO_INVALID_OTHER + (NFS_INO_INVALID_OTHER | NFS_INO_REVAL_FORCED); cache_revalidated = false; } @@ -1920,25 +1972,23 @@ static int nfs_update_inode(struct inode *inode, struct nfs_fattr *fattr) if (fattr->valid & NFS_ATTR_FATTR_GROUP) { if (!gid_eq(inode->i_gid, fattr->gid)) { invalid |= NFS_INO_INVALID_ACCESS - | NFS_INO_INVALID_ACL - | NFS_INO_INVALID_OTHER; + | NFS_INO_INVALID_ACL; inode->i_gid = fattr->gid; + attr_changed = true; } } else if (server->caps & NFS_CAP_OWNER_GROUP) { nfsi->cache_validity |= save_cache_validity & - (NFS_INO_INVALID_ACCESS - | NFS_INO_INVALID_ACL - | NFS_INO_INVALID_OTHER + (NFS_INO_INVALID_OTHER | NFS_INO_REVAL_FORCED); cache_revalidated = false; } if (fattr->valid & NFS_ATTR_FATTR_NLINK) { if (inode->i_nlink != fattr->nlink) { - invalid |= NFS_INO_INVALID_OTHER; if (S_ISDIR(inode->i_mode)) invalid |= NFS_INO_INVALID_DATA; set_nlink(inode, fattr->nlink); + attr_changed = true; } } else if (server->caps & NFS_CAP_NLINK) { nfsi->cache_validity |= save_cache_validity & @@ -1958,7 +2008,7 @@ static int nfs_update_inode(struct inode *inode, struct nfs_fattr *fattr) cache_revalidated = false; /* Update attrtimeo value if we're out of the unstable period */ - if (invalid & NFS_INO_INVALID_ATTR) { + if (attr_changed) { invalid &= ~NFS_INO_INVALID_ATTR; nfs_inc_stats(inode, NFSIOS_ATTRINVALIDATE); nfsi->attrtimeo = NFS_MINATTRTIMEO(inode); @@ -1984,9 +2034,7 @@ static int nfs_update_inode(struct inode *inode, struct nfs_fattr *fattr) if (!(S_ISREG(inode->i_mode) || S_ISDIR(inode->i_mode) || S_ISLNK(inode->i_mode))) invalid &= ~NFS_INO_INVALID_DATA; - if (!NFS_PROTO(inode)->have_delegation(inode, FMODE_READ) || - (save_cache_validity & NFS_INO_REVAL_FORCED)) - nfs_set_cache_invalid(inode, invalid); + nfs_set_cache_invalid(inode, invalid); return 0; out_err: diff --git a/fs/nfs/nfs3proc.c b/fs/nfs/nfs3proc.c index eadf1ab31d16..ec8a9efa268f 100644 --- a/fs/nfs/nfs3proc.c +++ b/fs/nfs/nfs3proc.c @@ -101,7 +101,8 @@ nfs3_proc_get_root(struct nfs_server *server, struct nfs_fh *fhandle, */ static int nfs3_proc_getattr(struct nfs_server *server, struct nfs_fh *fhandle, - struct nfs_fattr *fattr, struct nfs4_label *label) + struct nfs_fattr *fattr, struct nfs4_label *label, + struct inode *inode) { struct rpc_message msg = { .rpc_proc = &nfs3_procedures[NFS3PROC_GETATTR], @@ -414,7 +415,9 @@ out: } static void -nfs3_proc_unlink_setup(struct rpc_message *msg, struct dentry *dentry) +nfs3_proc_unlink_setup(struct rpc_message *msg, + struct dentry *dentry, + struct inode *inode) { msg->rpc_proc = &nfs3_procedures[NFS3PROC_REMOVE]; } @@ -823,7 +826,8 @@ static int nfs3_write_done(struct rpc_task *task, struct nfs_pgio_header *hdr) } static void nfs3_proc_write_setup(struct nfs_pgio_header *hdr, - struct rpc_message *msg) + struct rpc_message *msg, + struct rpc_clnt **clnt) { msg->rpc_proc = &nfs3_procedures[NFS3PROC_WRITE]; } @@ -844,7 +848,8 @@ static int nfs3_commit_done(struct rpc_task *task, struct nfs_commit_data *data) return 0; } -static void nfs3_proc_commit_setup(struct nfs_commit_data *data, struct rpc_message *msg) +static void nfs3_proc_commit_setup(struct nfs_commit_data *data, struct rpc_message *msg, + struct rpc_clnt **clnt) { msg->rpc_proc = &nfs3_procedures[NFS3PROC_COMMIT]; } diff --git a/fs/nfs/nfs42proc.c b/fs/nfs/nfs42proc.c index 9c374441f660..5f59b6f65a42 100644 --- a/fs/nfs/nfs42proc.c +++ b/fs/nfs/nfs42proc.c @@ -370,6 +370,10 @@ nfs42_layoutstat_done(struct rpc_task *task, void *calldata) switch (task->tk_status) { case 0: break; + case -NFS4ERR_BADHANDLE: + case -ESTALE: + pnfs_destroy_layout(NFS_I(inode)); + break; case -NFS4ERR_EXPIRED: case -NFS4ERR_ADMIN_REVOKED: case -NFS4ERR_DELEG_REVOKED: @@ -462,7 +466,7 @@ int nfs42_proc_layoutstats_generic(struct nfs_server *server, nfs42_layoutstat_release(data); return -EAGAIN; } - nfs4_init_sequence(&data->args.seq_args, &data->res.seq_res, 0); + nfs4_init_sequence(&data->args.seq_args, &data->res.seq_res, 0, 0); task = rpc_run_task(&task_setup); if (IS_ERR(task)) return PTR_ERR(task); diff --git a/fs/nfs/nfs4_fs.h b/fs/nfs/nfs4_fs.h index b374f680830c..137e18abb7e7 100644 --- a/fs/nfs/nfs4_fs.h +++ b/fs/nfs/nfs4_fs.h @@ -212,6 +212,31 @@ struct nfs4_state_recovery_ops { struct rpc_cred *); }; +struct nfs4_opendata { + struct kref kref; + struct nfs_openargs o_arg; + struct nfs_openres o_res; + struct nfs_open_confirmargs c_arg; + struct nfs_open_confirmres c_res; + struct nfs4_string owner_name; + struct nfs4_string group_name; + struct nfs4_label *a_label; + struct nfs_fattr f_attr; + struct nfs4_label *f_label; + struct dentry *dir; + struct dentry *dentry; + struct nfs4_state_owner *owner; + struct nfs4_state *state; + struct iattr attrs; + struct nfs4_layoutget *lgp; + unsigned long timestamp; + bool rpc_done; + bool file_created; + bool is_recover; + bool cancelled; + int rpc_status; +}; + struct nfs4_add_xprt_data { struct nfs_client *clp; struct rpc_cred *cred; @@ -251,7 +276,7 @@ extern int nfs4_handle_exception(struct nfs_server *, int, struct nfs4_exception extern int nfs4_call_sync(struct rpc_clnt *, struct nfs_server *, struct rpc_message *, struct nfs4_sequence_args *, struct nfs4_sequence_res *, int); -extern void nfs4_init_sequence(struct nfs4_sequence_args *, struct nfs4_sequence_res *, int); +extern void nfs4_init_sequence(struct nfs4_sequence_args *, struct nfs4_sequence_res *, int, int); extern int nfs4_proc_setclientid(struct nfs_client *, u32, unsigned short, struct rpc_cred *, struct nfs4_setclientid_res *); extern int nfs4_proc_setclientid_confirm(struct nfs_client *, struct nfs4_setclientid_res *arg, struct rpc_cred *); extern int nfs4_proc_get_rootfh(struct nfs_server *, struct nfs_fh *, struct nfs_fsinfo *, bool); diff --git a/fs/nfs/nfs4idmap.c b/fs/nfs/nfs4idmap.c index 22dc30a679a0..b6f9d84ba19b 100644 --- a/fs/nfs/nfs4idmap.c +++ b/fs/nfs/nfs4idmap.c @@ -343,7 +343,7 @@ static ssize_t nfs_idmap_lookup_name(__u32 id, const char *type, char *buf, int id_len; ssize_t ret; - id_len = snprintf(id_str, sizeof(id_str), "%u", id); + id_len = nfs_map_numeric_to_string(id, id_str, sizeof(id_str)); ret = nfs_idmap_get_key(id_str, id_len, type, buf, buflen, idmap); if (ret < 0) return -EINVAL; @@ -627,7 +627,8 @@ static int nfs_idmap_read_and_verify_message(struct idmap_msg *im, if (strcmp(upcall->im_name, im->im_name) != 0) break; /* Note: here we store the NUL terminator too */ - len = sprintf(id_str, "%d", im->im_id) + 1; + len = 1 + nfs_map_numeric_to_string(im->im_id, id_str, + sizeof(id_str)); ret = nfs_idmap_instantiate(key, authkey, id_str, len); break; case IDMAP_CONV_IDTONAME: diff --git a/fs/nfs/nfs4proc.c b/fs/nfs/nfs4proc.c index b71757e85066..ed45090e4df6 100644 --- a/fs/nfs/nfs4proc.c +++ b/fs/nfs/nfs4proc.c @@ -71,6 +71,8 @@ #define NFSDBG_FACILITY NFSDBG_PROC +#define NFS4_BITMASK_SZ 3 + #define NFS4_POLL_RETRY_MIN (HZ/10) #define NFS4_POLL_RETRY_MAX (15*HZ) @@ -86,12 +88,11 @@ | ATTR_MTIME_SET) struct nfs4_opendata; -static int _nfs4_proc_open(struct nfs4_opendata *data); static int _nfs4_recover_proc_open(struct nfs4_opendata *data); static int nfs4_do_fsinfo(struct nfs_server *, struct nfs_fh *, struct nfs_fsinfo *); static void nfs_fixup_referral_attributes(struct nfs_fattr *fattr); -static int nfs4_proc_getattr(struct nfs_server *, struct nfs_fh *, struct nfs_fattr *, struct nfs4_label *label); -static int _nfs4_proc_getattr(struct nfs_server *server, struct nfs_fh *fhandle, struct nfs_fattr *fattr, struct nfs4_label *label); +static int nfs4_proc_getattr(struct nfs_server *, struct nfs_fh *, struct nfs_fattr *, struct nfs4_label *label, struct inode *inode); +static int _nfs4_proc_getattr(struct nfs_server *server, struct nfs_fh *fhandle, struct nfs_fattr *fattr, struct nfs4_label *label, struct inode *inode); static int nfs4_do_setattr(struct inode *inode, struct rpc_cred *cred, struct nfs_fattr *fattr, struct iattr *sattr, struct nfs_open_context *ctx, struct nfs4_label *ilabel, @@ -274,6 +275,33 @@ const u32 nfs4_fs_locations_bitmap[3] = { | FATTR4_WORD1_MOUNTED_ON_FILEID, }; +static void nfs4_bitmap_copy_adjust(__u32 *dst, const __u32 *src, + struct inode *inode) +{ + unsigned long cache_validity; + + memcpy(dst, src, NFS4_BITMASK_SZ*sizeof(*dst)); + if (!inode || !nfs4_have_delegation(inode, FMODE_READ)) + return; + + cache_validity = READ_ONCE(NFS_I(inode)->cache_validity); + if (!(cache_validity & NFS_INO_REVAL_FORCED)) + cache_validity &= ~(NFS_INO_INVALID_CHANGE + | NFS_INO_INVALID_SIZE); + + if (!(cache_validity & NFS_INO_INVALID_SIZE)) + dst[0] &= ~FATTR4_WORD0_SIZE; + + if (!(cache_validity & NFS_INO_INVALID_CHANGE)) + dst[0] &= ~FATTR4_WORD0_CHANGE; +} + +static void nfs4_bitmap_copy_adjust_setattr(__u32 *dst, + const __u32 *src, struct inode *inode) +{ + nfs4_bitmap_copy_adjust(dst, src, inode); +} + static void nfs4_setup_readdir(u64 cookie, __be32 *verifier, struct dentry *dentry, struct nfs4_readdir_arg *readdir) { @@ -407,6 +435,11 @@ static int nfs4_do_handle_exception(struct nfs_server *server, switch(errorcode) { case 0: return 0; + case -NFS4ERR_BADHANDLE: + case -ESTALE: + if (inode != NULL && S_ISREG(inode->i_mode)) + pnfs_destroy_layout(NFS_I(inode)); + break; case -NFS4ERR_DELEG_REVOKED: case -NFS4ERR_ADMIN_REVOKED: case -NFS4ERR_EXPIRED: @@ -608,20 +641,16 @@ struct nfs4_call_sync_data { }; void nfs4_init_sequence(struct nfs4_sequence_args *args, - struct nfs4_sequence_res *res, int cache_reply) + struct nfs4_sequence_res *res, int cache_reply, + int privileged) { args->sa_slot = NULL; args->sa_cache_this = cache_reply; - args->sa_privileged = 0; + args->sa_privileged = privileged; res->sr_slot = NULL; } -static void nfs4_set_sequence_privileged(struct nfs4_sequence_args *args) -{ - args->sa_privileged = 1; -} - static void nfs40_sequence_free_slot(struct nfs4_sequence_res *res) { struct nfs4_slot *slot = res->sr_slot; @@ -746,12 +775,19 @@ static int nfs41_sequence_process(struct rpc_task *task, slot->slot_nr, slot->seq_nr); goto out_retry; + case -NFS4ERR_RETRY_UNCACHED_REP: + case -NFS4ERR_SEQ_FALSE_RETRY: + /* + * The server thinks we tried to replay a request. + * Retry the call after bumping the sequence ID. + */ + goto retry_new_seq; case -NFS4ERR_BADSLOT: /* * The slot id we used was probably retired. Try again * using a different slot id. */ - if (slot->seq_nr < slot->table->target_highest_slotid) + if (slot->slot_nr < slot->table->target_highest_slotid) goto session_recover; goto retry_nowait; case -NFS4ERR_SEQ_MISORDERED: @@ -770,10 +806,6 @@ static int nfs41_sequence_process(struct rpc_task *task, goto retry_nowait; } goto session_recover; - case -NFS4ERR_SEQ_FALSE_RETRY: - if (interrupted) - goto retry_new_seq; - goto session_recover; default: /* Just update the slot sequence no. */ slot->seq_done = 1; @@ -1035,7 +1067,7 @@ int nfs4_call_sync(struct rpc_clnt *clnt, struct nfs4_sequence_res *res, int cache_reply) { - nfs4_init_sequence(args, res, cache_reply); + nfs4_init_sequence(args, res, cache_reply, 0); return nfs4_call_sync_sequence(clnt, server, msg, args, res); } @@ -1064,30 +1096,6 @@ static void update_changeattr(struct inode *dir, struct nfs4_change_info *cinfo, spin_unlock(&dir->i_lock); } -struct nfs4_opendata { - struct kref kref; - struct nfs_openargs o_arg; - struct nfs_openres o_res; - struct nfs_open_confirmargs c_arg; - struct nfs_open_confirmres c_res; - struct nfs4_string owner_name; - struct nfs4_string group_name; - struct nfs4_label *a_label; - struct nfs_fattr f_attr; - struct nfs4_label *f_label; - struct dentry *dir; - struct dentry *dentry; - struct nfs4_state_owner *owner; - struct nfs4_state *state; - struct iattr attrs; - unsigned long timestamp; - bool rpc_done; - bool file_created; - bool is_recover; - bool cancelled; - int rpc_status; -}; - struct nfs4_open_createattrs { struct nfs4_label *label; struct iattr *sattr; @@ -1268,6 +1276,7 @@ static void nfs4_opendata_free(struct kref *kref) struct nfs4_opendata, kref); struct super_block *sb = p->dentry->d_sb; + nfs4_lgopen_release(p->lgp); nfs_free_seqid(p->o_arg.seqid); nfs4_sequence_free_slot(&p->o_res.seq_res); if (p->state != NULL) @@ -2187,13 +2196,12 @@ static int _nfs4_proc_open_confirm(struct nfs4_opendata *data) }; int status; - nfs4_init_sequence(&data->c_arg.seq_args, &data->c_res.seq_res, 1); + nfs4_init_sequence(&data->c_arg.seq_args, &data->c_res.seq_res, 1, + data->is_recover); kref_get(&data->kref); data->rpc_done = false; data->rpc_status = 0; data->timestamp = jiffies; - if (data->is_recover) - nfs4_set_sequence_privileged(&data->c_arg.seq_args); task = rpc_run_task(&task_setup_data); if (IS_ERR(task)) return PTR_ERR(task); @@ -2327,7 +2335,8 @@ static const struct rpc_call_ops nfs4_open_ops = { .rpc_release = nfs4_open_release, }; -static int nfs4_run_open_task(struct nfs4_opendata *data, int isrecover) +static int nfs4_run_open_task(struct nfs4_opendata *data, + struct nfs_open_context *ctx) { struct inode *dir = d_inode(data->dir); struct nfs_server *server = NFS_SERVER(dir); @@ -2350,15 +2359,17 @@ static int nfs4_run_open_task(struct nfs4_opendata *data, int isrecover) }; int status; - nfs4_init_sequence(&o_arg->seq_args, &o_res->seq_res, 1); kref_get(&data->kref); data->rpc_done = false; data->rpc_status = 0; data->cancelled = false; data->is_recover = false; - if (isrecover) { - nfs4_set_sequence_privileged(&o_arg->seq_args); + if (!ctx) { + nfs4_init_sequence(&o_arg->seq_args, &o_res->seq_res, 1, 1); data->is_recover = true; + } else { + nfs4_init_sequence(&o_arg->seq_args, &o_res->seq_res, 1, 0); + pnfs_lgopen_prepare(data, ctx); } task = rpc_run_task(&task_setup_data); if (IS_ERR(task)) @@ -2380,7 +2391,7 @@ static int _nfs4_recover_proc_open(struct nfs4_opendata *data) struct nfs_openres *o_res = &data->o_res; int status; - status = nfs4_run_open_task(data, 1); + status = nfs4_run_open_task(data, NULL); if (status != 0 || !data->rpc_done) return status; @@ -2441,7 +2452,8 @@ static int nfs4_opendata_access(struct rpc_cred *cred, /* * Note: On error, nfs4_proc_open will free the struct nfs4_opendata */ -static int _nfs4_proc_open(struct nfs4_opendata *data) +static int _nfs4_proc_open(struct nfs4_opendata *data, + struct nfs_open_context *ctx) { struct inode *dir = d_inode(data->dir); struct nfs_server *server = NFS_SERVER(dir); @@ -2449,7 +2461,7 @@ static int _nfs4_proc_open(struct nfs4_opendata *data) struct nfs_openres *o_res = &data->o_res; int status; - status = nfs4_run_open_task(data, 0); + status = nfs4_run_open_task(data, ctx); if (!data->rpc_done) return status; if (status != 0) { @@ -2480,7 +2492,8 @@ static int _nfs4_proc_open(struct nfs4_opendata *data) } if (!(o_res->f_attr->valid & NFS_ATTR_FATTR)) { nfs4_sequence_free_slot(&o_res->seq_res); - nfs4_proc_getattr(server, &o_res->fh, o_res->f_attr, o_res->f_label); + nfs4_proc_getattr(server, &o_res->fh, o_res->f_attr, + o_res->f_label, NULL); } return 0; } @@ -2800,11 +2813,11 @@ static int _nfs4_open_and_get_state(struct nfs4_opendata *opendata, seq = raw_seqcount_begin(&sp->so_reclaim_seqcount); - ret = _nfs4_proc_open(opendata); + ret = _nfs4_proc_open(opendata, ctx); if (ret != 0) goto out; - state = nfs4_opendata_to_nfs4_state(opendata); + state = _nfs4_opendata_to_nfs4_state(opendata); ret = PTR_ERR(state); if (IS_ERR(state)) goto out; @@ -2838,8 +2851,12 @@ static int _nfs4_open_and_get_state(struct nfs4_opendata *opendata, nfs_inode_attach_open_context(ctx); if (read_seqcount_retry(&sp->so_reclaim_seqcount, seq)) nfs4_schedule_stateid_recovery(server, state); + else + pnfs_parse_lgopen(state->inode, opendata->lgp, ctx); } + out: + nfs4_sequence_free_slot(&opendata->o_res.seq_res); return ret; } @@ -3039,7 +3056,6 @@ static int _nfs4_do_setattr(struct inode *inode, }; struct rpc_cred *delegation_cred = NULL; unsigned long timestamp = jiffies; - fmode_t fmode; bool truncate; int status; @@ -3047,11 +3063,12 @@ static int _nfs4_do_setattr(struct inode *inode, /* Servers should only apply open mode checks for file size changes */ truncate = (arg->iap->ia_valid & ATTR_SIZE) ? true : false; - fmode = truncate ? FMODE_WRITE : FMODE_READ; + if (!truncate) + goto zero_stateid; - if (nfs4_copy_delegation_stateid(inode, fmode, &arg->stateid, &delegation_cred)) { + if (nfs4_copy_delegation_stateid(inode, FMODE_WRITE, &arg->stateid, &delegation_cred)) { /* Use that stateid */ - } else if (truncate && ctx != NULL) { + } else if (ctx != NULL) { struct nfs_lock_context *l_ctx; if (!nfs4_valid_open_stateid(ctx->state)) return -EBADF; @@ -3063,8 +3080,10 @@ static int _nfs4_do_setattr(struct inode *inode, nfs_put_lock_context(l_ctx); if (status == -EIO) return -EBADF; - } else + } else { +zero_stateid: nfs4_stateid_copy(&arg->stateid, &zero_stateid); + } if (delegation_cred) msg.rpc_cred = delegation_cred; @@ -3083,12 +3102,13 @@ static int nfs4_do_setattr(struct inode *inode, struct rpc_cred *cred, struct nfs4_label *olabel) { struct nfs_server *server = NFS_SERVER(inode); + __u32 bitmask[NFS4_BITMASK_SZ]; struct nfs4_state *state = ctx ? ctx->state : NULL; struct nfs_setattrargs arg = { .fh = NFS_FH(inode), .iap = sattr, .server = server, - .bitmask = server->attr_bitmask, + .bitmask = bitmask, .label = ilabel, }; struct nfs_setattrres res = { @@ -3103,11 +3123,11 @@ static int nfs4_do_setattr(struct inode *inode, struct rpc_cred *cred, }; int err; - arg.bitmask = nfs4_bitmask(server, ilabel); - if (ilabel) - arg.bitmask = nfs4_bitmask(server, olabel); - do { + nfs4_bitmap_copy_adjust_setattr(bitmask, + nfs4_bitmask(server, olabel), + inode); + err = _nfs4_do_setattr(inode, &arg, &res, cred, ctx); switch (err) { case -NFS4ERR_OPENMODE: @@ -3393,7 +3413,7 @@ int nfs4_do_close(struct nfs4_state *state, gfp_t gfp_mask, int wait) calldata = kzalloc(sizeof(*calldata), gfp_mask); if (calldata == NULL) goto out; - nfs4_init_sequence(&calldata->arg.seq_args, &calldata->res.seq_res, 1); + nfs4_init_sequence(&calldata->arg.seq_args, &calldata->res.seq_res, 1, 0); calldata->inode = state->inode; calldata->state = state; calldata->arg.fh = NFS_FH(state->inode); @@ -3742,7 +3762,7 @@ static int nfs4_proc_get_root(struct nfs_server *server, struct nfs_fh *mntfh, if (IS_ERR(label)) return PTR_ERR(label); - error = nfs4_proc_getattr(server, mntfh, fattr, label); + error = nfs4_proc_getattr(server, mntfh, fattr, label, NULL); if (error < 0) { dprintk("nfs4_get_root: getattr error = %d\n", -error); goto err_free_label; @@ -3807,11 +3827,13 @@ out: } static int _nfs4_proc_getattr(struct nfs_server *server, struct nfs_fh *fhandle, - struct nfs_fattr *fattr, struct nfs4_label *label) + struct nfs_fattr *fattr, struct nfs4_label *label, + struct inode *inode) { + __u32 bitmask[NFS4_BITMASK_SZ]; struct nfs4_getattr_arg args = { .fh = fhandle, - .bitmask = server->attr_bitmask, + .bitmask = bitmask, }; struct nfs4_getattr_res res = { .fattr = fattr, @@ -3824,19 +3846,20 @@ static int _nfs4_proc_getattr(struct nfs_server *server, struct nfs_fh *fhandle, .rpc_resp = &res, }; - args.bitmask = nfs4_bitmask(server, label); + nfs4_bitmap_copy_adjust(bitmask, nfs4_bitmask(server, label), inode); nfs_fattr_init(fattr); return nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 0); } static int nfs4_proc_getattr(struct nfs_server *server, struct nfs_fh *fhandle, - struct nfs_fattr *fattr, struct nfs4_label *label) + struct nfs_fattr *fattr, struct nfs4_label *label, + struct inode *inode) { struct nfs4_exception exception = { }; int err; do { - err = _nfs4_proc_getattr(server, fhandle, fattr, label); + err = _nfs4_proc_getattr(server, fhandle, fattr, label, inode); trace_nfs4_getattr(server, fhandle, fattr, err); err = nfs4_handle_exception(server, err, &exception); @@ -4089,7 +4112,7 @@ static int _nfs4_proc_access(struct inode *inode, struct nfs_access_entry *entry }; int status = 0; - if (!nfs_have_delegated_attributes(inode)) { + if (!nfs4_have_delegation(inode, FMODE_READ)) { res.fattr = nfs_alloc_fattr(); if (res.fattr == NULL) return -ENOMEM; @@ -4265,15 +4288,16 @@ static int nfs4_proc_rmdir(struct inode *dir, const struct qstr *name) return err; } -static void nfs4_proc_unlink_setup(struct rpc_message *msg, struct dentry *dentry) +static void nfs4_proc_unlink_setup(struct rpc_message *msg, + struct dentry *dentry, + struct inode *inode) { struct nfs_removeargs *args = msg->rpc_argp; struct nfs_removeres *res = msg->rpc_resp; - struct inode *inode = d_inode(dentry); res->server = NFS_SB(dentry->d_sb); msg->rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_REMOVE]; - nfs4_init_sequence(&args->seq_args, &res->seq_res, 1); + nfs4_init_sequence(&args->seq_args, &res->seq_res, 1, 0); nfs_fattr_init(res->dir_attr); @@ -4319,7 +4343,7 @@ static void nfs4_proc_rename_setup(struct rpc_message *msg, nfs4_inode_return_delegation(new_inode); msg->rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_RENAME]; res->server = NFS_SB(old_dentry->d_sb); - nfs4_init_sequence(&arg->seq_args, &res->seq_res, 1); + nfs4_init_sequence(&arg->seq_args, &res->seq_res, 1, 0); } static void nfs4_proc_rename_rpc_prepare(struct rpc_task *task, struct nfs_renamedata *data) @@ -4352,11 +4376,12 @@ static int nfs4_proc_rename_done(struct rpc_task *task, struct inode *old_dir, static int _nfs4_proc_link(struct inode *inode, struct inode *dir, const struct qstr *name) { struct nfs_server *server = NFS_SERVER(inode); + __u32 bitmask[NFS4_BITMASK_SZ]; struct nfs4_link_arg arg = { .fh = NFS_FH(inode), .dir_fh = NFS_FH(dir), .name = name, - .bitmask = server->attr_bitmask, + .bitmask = bitmask, }; struct nfs4_link_res res = { .server = server, @@ -4378,9 +4403,9 @@ static int _nfs4_proc_link(struct inode *inode, struct inode *dir, const struct status = PTR_ERR(res.label); goto out; } - arg.bitmask = nfs4_bitmask(server, res.label); nfs4_inode_make_writeable(inode); + nfs4_bitmap_copy_adjust_setattr(bitmask, nfs4_bitmask(server, res.label), inode); status = nfs4_call_sync(server->client, server, &msg, &arg.seq_args, &res.seq_res, 1); if (!status) { @@ -4895,7 +4920,7 @@ static void nfs4_proc_read_setup(struct nfs_pgio_header *hdr, if (!hdr->pgio_done_cb) hdr->pgio_done_cb = nfs4_read_done_cb; msg->rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_READ]; - nfs4_init_sequence(&hdr->args.seq_args, &hdr->res.seq_res, 0); + nfs4_init_sequence(&hdr->args.seq_args, &hdr->res.seq_res, 0, 0); } static int nfs4_proc_pgio_rpc_prepare(struct rpc_task *task, @@ -4979,7 +5004,8 @@ bool nfs4_write_need_cache_consistency_data(struct nfs_pgio_header *hdr) } static void nfs4_proc_write_setup(struct nfs_pgio_header *hdr, - struct rpc_message *msg) + struct rpc_message *msg, + struct rpc_clnt **clnt) { struct nfs_server *server = NFS_SERVER(hdr->inode); @@ -4995,7 +5021,8 @@ static void nfs4_proc_write_setup(struct nfs_pgio_header *hdr, hdr->timestamp = jiffies; msg->rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_WRITE]; - nfs4_init_sequence(&hdr->args.seq_args, &hdr->res.seq_res, 1); + nfs4_init_sequence(&hdr->args.seq_args, &hdr->res.seq_res, 1, 0); + nfs4_state_protect_write(server->nfs_client, clnt, msg, hdr); } static void nfs4_proc_commit_rpc_prepare(struct rpc_task *task, struct nfs_commit_data *data) @@ -5026,7 +5053,8 @@ static int nfs4_commit_done(struct rpc_task *task, struct nfs_commit_data *data) return data->commit_done_cb(task, data); } -static void nfs4_proc_commit_setup(struct nfs_commit_data *data, struct rpc_message *msg) +static void nfs4_proc_commit_setup(struct nfs_commit_data *data, struct rpc_message *msg, + struct rpc_clnt **clnt) { struct nfs_server *server = NFS_SERVER(data->inode); @@ -5034,7 +5062,8 @@ static void nfs4_proc_commit_setup(struct nfs_commit_data *data, struct rpc_mess data->commit_done_cb = nfs4_commit_done_cb; data->res.server = server; msg->rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_COMMIT]; - nfs4_init_sequence(&data->args.seq_args, &data->res.seq_res, 1); + nfs4_init_sequence(&data->args.seq_args, &data->res.seq_res, 1, 0); + nfs4_state_protect(server->nfs_client, NFS_SP4_MACH_CRED_COMMIT, clnt, msg); } struct nfs4_renewdata { @@ -5391,7 +5420,8 @@ static int __nfs4_proc_set_acl(struct inode *inode, const void *buf, size_t bufl */ spin_lock(&inode->i_lock); NFS_I(inode)->cache_validity |= NFS_INO_INVALID_CHANGE - | NFS_INO_INVALID_CTIME; + | NFS_INO_INVALID_CTIME + | NFS_INO_REVAL_FORCED; spin_unlock(&inode->i_lock); nfs_access_zap_cache(inode); nfs_zap_acl_cache(inode); @@ -5591,13 +5621,14 @@ nfs4_init_nonuniform_client_string(struct nfs_client *clp) return 0; rcu_read_lock(); - len = 14 + strlen(clp->cl_ipaddr) + 1 + - strlen(rpc_peeraddr2str(clp->cl_rpcclient, RPC_DISPLAY_ADDR)) + + len = 14 + + strlen(clp->cl_rpcclient->cl_nodename) + 1 + - strlen(rpc_peeraddr2str(clp->cl_rpcclient, RPC_DISPLAY_PROTO)) + + strlen(rpc_peeraddr2str(clp->cl_rpcclient, RPC_DISPLAY_ADDR)) + 1; rcu_read_unlock(); - + if (nfs4_client_id_uniquifier[0] != '\0') + len += strlen(nfs4_client_id_uniquifier) + 1; if (len > NFS4_OPAQUE_LIMIT + 1) return -EINVAL; @@ -5611,10 +5642,17 @@ nfs4_init_nonuniform_client_string(struct nfs_client *clp) return -ENOMEM; rcu_read_lock(); - scnprintf(str, len, "Linux NFSv4.0 %s/%s %s", - clp->cl_ipaddr, - rpc_peeraddr2str(clp->cl_rpcclient, RPC_DISPLAY_ADDR), - rpc_peeraddr2str(clp->cl_rpcclient, RPC_DISPLAY_PROTO)); + if (nfs4_client_id_uniquifier[0] != '\0') + scnprintf(str, len, "Linux NFSv4.0 %s/%s/%s", + clp->cl_rpcclient->cl_nodename, + nfs4_client_id_uniquifier, + rpc_peeraddr2str(clp->cl_rpcclient, + RPC_DISPLAY_ADDR)); + else + scnprintf(str, len, "Linux NFSv4.0 %s/%s", + clp->cl_rpcclient->cl_nodename, + rpc_peeraddr2str(clp->cl_rpcclient, + RPC_DISPLAY_ADDR)); rcu_read_unlock(); clp->cl_owner_id = str; @@ -5972,7 +6010,7 @@ static int _nfs4_proc_delegreturn(struct inode *inode, struct rpc_cred *cred, co data = kzalloc(sizeof(*data), GFP_NOFS); if (data == NULL) return -ENOMEM; - nfs4_init_sequence(&data->args.seq_args, &data->res.seq_res, 1); + nfs4_init_sequence(&data->args.seq_args, &data->res.seq_res, 1, 0); nfs4_state_protect(server->nfs_client, NFS_SP4_MACH_CRED_CLEANUP, @@ -6247,7 +6285,7 @@ static struct rpc_task *nfs4_do_unlck(struct file_lock *fl, return ERR_PTR(-ENOMEM); } - nfs4_init_sequence(&data->arg.seq_args, &data->res.seq_res, 1); + nfs4_init_sequence(&data->arg.seq_args, &data->res.seq_res, 1, 0); msg.rpc_argp = &data->arg; msg.rpc_resp = &data->res; task_setup_data.callback_data = data; @@ -6411,32 +6449,36 @@ static void nfs4_lock_done(struct rpc_task *task, void *calldata) case 0: renew_lease(NFS_SERVER(d_inode(data->ctx->dentry)), data->timestamp); - if (data->arg.new_lock) { + if (data->arg.new_lock && !data->cancelled) { data->fl.fl_flags &= ~(FL_SLEEP | FL_ACCESS); - if (locks_lock_inode_wait(lsp->ls_state->inode, &data->fl) < 0) { - rpc_restart_call_prepare(task); + if (locks_lock_inode_wait(lsp->ls_state->inode, &data->fl) < 0) break; - } } + if (data->arg.new_lock_owner != 0) { nfs_confirm_seqid(&lsp->ls_seqid, 0); nfs4_stateid_copy(&lsp->ls_stateid, &data->res.stateid); set_bit(NFS_LOCK_INITIALIZED, &lsp->ls_flags); - } else if (!nfs4_update_lock_stateid(lsp, &data->res.stateid)) - rpc_restart_call_prepare(task); + goto out_done; + } else if (nfs4_update_lock_stateid(lsp, &data->res.stateid)) + goto out_done; + break; case -NFS4ERR_BAD_STATEID: case -NFS4ERR_OLD_STATEID: case -NFS4ERR_STALE_STATEID: case -NFS4ERR_EXPIRED: if (data->arg.new_lock_owner != 0) { - if (!nfs4_stateid_match(&data->arg.open_stateid, + if (nfs4_stateid_match(&data->arg.open_stateid, &lsp->ls_state->open_stateid)) - rpc_restart_call_prepare(task); - } else if (!nfs4_stateid_match(&data->arg.lock_stateid, + goto out_done; + } else if (nfs4_stateid_match(&data->arg.lock_stateid, &lsp->ls_stateid)) - rpc_restart_call_prepare(task); + goto out_done; } + if (!data->cancelled) + rpc_restart_call_prepare(task); +out_done: dprintk("%s: done, ret = %d!\n", __func__, data->rpc_status); } @@ -6509,14 +6551,14 @@ static int _nfs4_do_setlk(struct nfs4_state *state, int cmd, struct file_lock *f return -ENOMEM; if (IS_SETLKW(cmd)) data->arg.block = 1; - nfs4_init_sequence(&data->arg.seq_args, &data->res.seq_res, 1); + nfs4_init_sequence(&data->arg.seq_args, &data->res.seq_res, 1, + recovery_type > NFS_LOCK_NEW); msg.rpc_argp = &data->arg; msg.rpc_resp = &data->res; task_setup_data.callback_data = data; if (recovery_type > NFS_LOCK_NEW) { if (recovery_type == NFS_LOCK_RECLAIM) data->arg.reclaim = NFS_LOCK_RECLAIM; - nfs4_set_sequence_privileged(&data->arg.seq_args); } else data->arg.new_lock = 1; task = rpc_run_task(&task_setup_data); @@ -6911,7 +6953,7 @@ nfs4_release_lockowner(struct nfs_server *server, struct nfs4_lock_state *lsp) msg.rpc_argp = &data->args; msg.rpc_resp = &data->res; - nfs4_init_sequence(&data->args.seq_args, &data->res.seq_res, 0); + nfs4_init_sequence(&data->args.seq_args, &data->res.seq_res, 0, 0); rpc_call_async(server->client, &msg, 0, &nfs4_release_lockowner_ops, data); } @@ -7107,8 +7149,7 @@ static int _nfs40_proc_get_locations(struct inode *inode, locations->server = server; locations->nlocations = 0; - nfs4_init_sequence(&args.seq_args, &res.seq_res, 0); - nfs4_set_sequence_privileged(&args.seq_args); + nfs4_init_sequence(&args.seq_args, &res.seq_res, 0, 1); status = nfs4_call_sync_sequence(clnt, server, &msg, &args.seq_args, &res.seq_res); if (status) @@ -7161,8 +7202,7 @@ static int _nfs41_proc_get_locations(struct inode *inode, locations->server = server; locations->nlocations = 0; - nfs4_init_sequence(&args.seq_args, &res.seq_res, 0); - nfs4_set_sequence_privileged(&args.seq_args); + nfs4_init_sequence(&args.seq_args, &res.seq_res, 0, 1); status = nfs4_call_sync_sequence(clnt, server, &msg, &args.seq_args, &res.seq_res); if (status == NFS4_OK && @@ -7249,8 +7289,7 @@ static int _nfs40_proc_fsid_present(struct inode *inode, struct rpc_cred *cred) if (res.fh == NULL) return -ENOMEM; - nfs4_init_sequence(&args.seq_args, &res.seq_res, 0); - nfs4_set_sequence_privileged(&args.seq_args); + nfs4_init_sequence(&args.seq_args, &res.seq_res, 0, 1); status = nfs4_call_sync_sequence(clnt, server, &msg, &args.seq_args, &res.seq_res); nfs_free_fhandle(res.fh); @@ -7291,8 +7330,7 @@ static int _nfs41_proc_fsid_present(struct inode *inode, struct rpc_cred *cred) if (res.fh == NULL) return -ENOMEM; - nfs4_init_sequence(&args.seq_args, &res.seq_res, 0); - nfs4_set_sequence_privileged(&args.seq_args); + nfs4_init_sequence(&args.seq_args, &res.seq_res, 0, 1); status = nfs4_call_sync_sequence(clnt, server, &msg, &args.seq_args, &res.seq_res); nfs_free_fhandle(res.fh); @@ -8070,8 +8108,7 @@ int nfs4_proc_get_lease_time(struct nfs_client *clp, struct nfs_fsinfo *fsinfo) }; int status; - nfs4_init_sequence(&args.la_seq_args, &res.lr_seq_res, 0); - nfs4_set_sequence_privileged(&args.la_seq_args); + nfs4_init_sequence(&args.la_seq_args, &res.lr_seq_res, 0, 1); task = rpc_run_task(&task_setup); if (IS_ERR(task)) @@ -8408,10 +8445,8 @@ static struct rpc_task *_nfs41_proc_sequence(struct nfs_client *clp, calldata = kzalloc(sizeof(*calldata), GFP_NOFS); if (calldata == NULL) goto out_put_clp; - nfs4_init_sequence(&calldata->args, &calldata->res, 0); + nfs4_init_sequence(&calldata->args, &calldata->res, 0, is_privileged); nfs4_sequence_attach_slot(&calldata->args, &calldata->res, slot); - if (is_privileged) - nfs4_set_sequence_privileged(&calldata->args); msg.rpc_argp = &calldata->args; msg.rpc_resp = &calldata->res; calldata->clp = clp; @@ -8563,8 +8598,7 @@ static int nfs41_proc_reclaim_complete(struct nfs_client *clp, calldata->clp = clp; calldata->arg.one_fs = 0; - nfs4_init_sequence(&calldata->arg.seq_args, &calldata->res.seq_res, 0); - nfs4_set_sequence_privileged(&calldata->arg.seq_args); + nfs4_init_sequence(&calldata->arg.seq_args, &calldata->res.seq_res, 0, 1); msg.rpc_argp = &calldata->arg; msg.rpc_resp = &calldata->res; task_setup_data.callback_data = calldata; @@ -8693,63 +8727,19 @@ out: return status; } -static size_t max_response_pages(struct nfs_server *server) +size_t max_response_pages(struct nfs_server *server) { u32 max_resp_sz = server->nfs_client->cl_session->fc_attrs.max_resp_sz; return nfs_page_array_len(0, max_resp_sz); } -static void nfs4_free_pages(struct page **pages, size_t size) -{ - int i; - - if (!pages) - return; - - for (i = 0; i < size; i++) { - if (!pages[i]) - break; - __free_page(pages[i]); - } - kfree(pages); -} - -static struct page **nfs4_alloc_pages(size_t size, gfp_t gfp_flags) -{ - struct page **pages; - int i; - - pages = kcalloc(size, sizeof(struct page *), gfp_flags); - if (!pages) { - dprintk("%s: can't alloc array of %zu pages\n", __func__, size); - return NULL; - } - - for (i = 0; i < size; i++) { - pages[i] = alloc_page(gfp_flags); - if (!pages[i]) { - dprintk("%s: failed to allocate page\n", __func__); - nfs4_free_pages(pages, size); - return NULL; - } - } - - return pages; -} - static void nfs4_layoutget_release(void *calldata) { struct nfs4_layoutget *lgp = calldata; - struct inode *inode = lgp->args.inode; - struct nfs_server *server = NFS_SERVER(inode); - size_t max_pages = max_response_pages(server); dprintk("--> %s\n", __func__); nfs4_sequence_free_slot(&lgp->res.seq_res); - nfs4_free_pages(lgp->args.layout.pages, max_pages); - pnfs_put_layout_hdr(NFS_I(inode)->layout); - put_nfs_open_context(lgp->args.ctx); - kfree(calldata); + pnfs_layoutget_free(lgp); dprintk("<-- %s\n", __func__); } @@ -8760,11 +8750,10 @@ static const struct rpc_call_ops nfs4_layoutget_call_ops = { }; struct pnfs_layout_segment * -nfs4_proc_layoutget(struct nfs4_layoutget *lgp, long *timeout, gfp_t gfp_flags) +nfs4_proc_layoutget(struct nfs4_layoutget *lgp, long *timeout) { struct inode *inode = lgp->args.inode; struct nfs_server *server = NFS_SERVER(inode); - size_t max_pages = max_response_pages(server); struct rpc_task *task; struct rpc_message msg = { .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LAYOUTGET], @@ -8791,16 +8780,7 @@ nfs4_proc_layoutget(struct nfs4_layoutget *lgp, long *timeout, gfp_t gfp_flags) /* nfs4_layoutget_release calls pnfs_put_layout_hdr */ pnfs_get_layout_hdr(NFS_I(inode)->layout); - lgp->args.layout.pages = nfs4_alloc_pages(max_pages, gfp_flags); - if (!lgp->args.layout.pages) { - nfs4_layoutget_release(lgp); - return ERR_PTR(-ENOMEM); - } - lgp->args.layout.pglen = max_pages * PAGE_SIZE; - - lgp->res.layoutp = &lgp->args.layout; - lgp->res.seq_res.sr_slot = NULL; - nfs4_init_sequence(&lgp->args.seq_args, &lgp->res.seq_res, 0); + nfs4_init_sequence(&lgp->args.seq_args, &lgp->res.seq_res, 0, 0); task = rpc_run_task(&task_setup_data); if (IS_ERR(task)) @@ -8927,7 +8907,7 @@ int nfs4_proc_layoutreturn(struct nfs4_layoutreturn *lrp, bool sync) } task_setup_data.flags |= RPC_TASK_ASYNC; } - nfs4_init_sequence(&lrp->args.seq_args, &lrp->res.seq_res, 1); + nfs4_init_sequence(&lrp->args.seq_args, &lrp->res.seq_res, 1, 0); task = rpc_run_task(&task_setup_data); if (IS_ERR(task)) return PTR_ERR(task); @@ -9074,7 +9054,7 @@ nfs4_proc_layoutcommit(struct nfs4_layoutcommit_data *data, bool sync) } task_setup_data.flags = RPC_TASK_ASYNC; } - nfs4_init_sequence(&data->args.seq_args, &data->res.seq_res, 1); + nfs4_init_sequence(&data->args.seq_args, &data->res.seq_res, 1, 0); task = rpc_run_task(&task_setup_data); if (IS_ERR(task)) return PTR_ERR(task); @@ -9254,8 +9234,7 @@ static int _nfs41_test_stateid(struct nfs_server *server, &rpc_client, &msg); dprintk("NFS call test_stateid %p\n", stateid); - nfs4_init_sequence(&args.seq_args, &res.seq_res, 0); - nfs4_set_sequence_privileged(&args.seq_args); + nfs4_init_sequence(&args.seq_args, &res.seq_res, 0, 1); status = nfs4_call_sync_sequence(rpc_client, server, &msg, &args.seq_args, &res.seq_res); if (status != NFS_OK) { @@ -9347,7 +9326,17 @@ static const struct rpc_call_ops nfs41_free_stateid_ops = { .rpc_release = nfs41_free_stateid_release, }; -static struct rpc_task *_nfs41_free_stateid(struct nfs_server *server, +/** + * nfs41_free_stateid - perform a FREE_STATEID operation + * + * @server: server / transport on which to perform the operation + * @stateid: state ID to release + * @cred: credential + * @is_recovery: set to true if this call needs to be privileged + * + * Note: this function is always asynchronous. + */ +static int nfs41_free_stateid(struct nfs_server *server, const nfs4_stateid *stateid, struct rpc_cred *cred, bool privileged) @@ -9363,6 +9352,7 @@ static struct rpc_task *_nfs41_free_stateid(struct nfs_server *server, .flags = RPC_TASK_ASYNC, }; struct nfs_free_stateid_data *data; + struct rpc_task *task; nfs4_state_protect(server->nfs_client, NFS_SP4_MACH_CRED_STATEID, &task_setup.rpc_client, &msg); @@ -9370,7 +9360,7 @@ static struct rpc_task *_nfs41_free_stateid(struct nfs_server *server, dprintk("NFS call free_stateid %p\n", stateid); data = kmalloc(sizeof(*data), GFP_NOFS); if (!data) - return ERR_PTR(-ENOMEM); + return -ENOMEM; data->server = server; nfs4_stateid_copy(&data->args.stateid, stateid); @@ -9378,31 +9368,8 @@ static struct rpc_task *_nfs41_free_stateid(struct nfs_server *server, msg.rpc_argp = &data->args; msg.rpc_resp = &data->res; - nfs4_init_sequence(&data->args.seq_args, &data->res.seq_res, 1); - if (privileged) - nfs4_set_sequence_privileged(&data->args.seq_args); - - return rpc_run_task(&task_setup); -} - -/** - * nfs41_free_stateid - perform a FREE_STATEID operation - * - * @server: server / transport on which to perform the operation - * @stateid: state ID to release - * @cred: credential - * @is_recovery: set to true if this call needs to be privileged - * - * Note: this function is always asynchronous. - */ -static int nfs41_free_stateid(struct nfs_server *server, - const nfs4_stateid *stateid, - struct rpc_cred *cred, - bool is_recovery) -{ - struct rpc_task *task; - - task = _nfs41_free_stateid(server, stateid, cred, is_recovery); + nfs4_init_sequence(&data->args.seq_args, &data->res.seq_res, 1, privileged); + task = rpc_run_task(&task_setup); if (IS_ERR(task)) return PTR_ERR(task); rpc_put_task(task); @@ -9539,7 +9506,8 @@ static const struct nfs4_minor_version_ops nfs_v4_1_minor_ops = { | NFS_CAP_ATOMIC_OPEN | NFS_CAP_POSIX_LOCK | NFS_CAP_STATEID_NFSV41 - | NFS_CAP_ATOMIC_OPEN_V1, + | NFS_CAP_ATOMIC_OPEN_V1 + | NFS_CAP_LGOPEN, .init_client = nfs41_init_client, .shutdown_client = nfs41_shutdown_client, .match_stateid = nfs41_match_stateid, @@ -9564,6 +9532,7 @@ static const struct nfs4_minor_version_ops nfs_v4_2_minor_ops = { | NFS_CAP_POSIX_LOCK | NFS_CAP_STATEID_NFSV41 | NFS_CAP_ATOMIC_OPEN_V1 + | NFS_CAP_LGOPEN | NFS_CAP_ALLOCATE | NFS_CAP_COPY | NFS_CAP_DEALLOCATE diff --git a/fs/nfs/nfs4state.c b/fs/nfs/nfs4state.c index c10a422efe6f..2bf2eaa08ca7 100644 --- a/fs/nfs/nfs4state.c +++ b/fs/nfs/nfs4state.c @@ -77,6 +77,14 @@ const nfs4_stateid invalid_stateid = { .type = NFS4_INVALID_STATEID_TYPE, }; +const nfs4_stateid current_stateid = { + { + /* Funky initialiser keeps older gcc versions happy */ + .data = { 0x0, 0x0, 0x0, 0x1, 0 }, + }, + .type = NFS4_SPECIAL_STATEID_TYPE, +}; + static DEFINE_MUTEX(nfs_clid_init_mutex); int nfs4_init_clientid(struct nfs_client *clp, struct rpc_cred *cred) diff --git a/fs/nfs/nfs4xdr.c b/fs/nfs/nfs4xdr.c index 9b7392032321..738a7be019d2 100644 --- a/fs/nfs/nfs4xdr.c +++ b/fs/nfs/nfs4xdr.c @@ -65,7 +65,13 @@ /* Mapping from NFS error code to "errno" error code. */ #define errno_NFSERR_IO EIO +struct compound_hdr; static int nfs4_stat_to_errno(int); +static void encode_layoutget(struct xdr_stream *xdr, + const struct nfs4_layoutget_args *args, + struct compound_hdr *hdr); +static int decode_layoutget(struct xdr_stream *xdr, struct rpc_rqst *req, + struct nfs4_layoutget_res *res); /* NFSv4 COMPOUND tags are only wanted for debugging purposes */ #ifdef DEBUG @@ -424,6 +430,8 @@ static int nfs4_stat_to_errno(int); #define decode_sequence_maxsz 0 #define encode_layoutreturn_maxsz 0 #define decode_layoutreturn_maxsz 0 +#define encode_layoutget_maxsz 0 +#define decode_layoutget_maxsz 0 #endif /* CONFIG_NFS_V4_1 */ #define NFS4_enc_compound_sz (1024) /* XXX: large enough? */ @@ -476,14 +484,16 @@ static int nfs4_stat_to_errno(int); encode_open_maxsz + \ encode_access_maxsz + \ encode_getfh_maxsz + \ - encode_getattr_maxsz) + encode_getattr_maxsz + \ + encode_layoutget_maxsz) #define NFS4_dec_open_sz (compound_decode_hdr_maxsz + \ decode_sequence_maxsz + \ decode_putfh_maxsz + \ decode_open_maxsz + \ decode_access_maxsz + \ decode_getfh_maxsz + \ - decode_getattr_maxsz) + decode_getattr_maxsz + \ + decode_layoutget_maxsz) #define NFS4_enc_open_confirm_sz \ (compound_encode_hdr_maxsz + \ encode_putfh_maxsz + \ @@ -497,13 +507,15 @@ static int nfs4_stat_to_errno(int); encode_putfh_maxsz + \ encode_open_maxsz + \ encode_access_maxsz + \ - encode_getattr_maxsz) + encode_getattr_maxsz + \ + encode_layoutget_maxsz) #define NFS4_dec_open_noattr_sz (compound_decode_hdr_maxsz + \ decode_sequence_maxsz + \ decode_putfh_maxsz + \ decode_open_maxsz + \ decode_access_maxsz + \ - decode_getattr_maxsz) + decode_getattr_maxsz + \ + decode_layoutget_maxsz) #define NFS4_enc_open_downgrade_sz \ (compound_encode_hdr_maxsz + \ encode_sequence_maxsz + \ @@ -2070,6 +2082,13 @@ encode_layoutreturn(struct xdr_stream *xdr, struct compound_hdr *hdr) { } + +static void +encode_layoutget(struct xdr_stream *xdr, + const struct nfs4_layoutget_args *args, + struct compound_hdr *hdr) +{ +} #endif /* CONFIG_NFS_V4_1 */ /* @@ -2316,6 +2335,12 @@ static void nfs4_xdr_enc_open(struct rpc_rqst *req, struct xdr_stream *xdr, if (args->access) encode_access(xdr, args->access, &hdr); encode_getfattr_open(xdr, args->bitmask, args->open_bitmap, &hdr); + if (args->lg_args) { + encode_layoutget(xdr, args->lg_args, &hdr); + xdr_inline_pages(&req->rq_rcv_buf, hdr.replen << 2, + args->lg_args->layout.pages, + 0, args->lg_args->layout.pglen); + } encode_nops(&hdr); } @@ -2356,6 +2381,12 @@ static void nfs4_xdr_enc_open_noattr(struct rpc_rqst *req, if (args->access) encode_access(xdr, args->access, &hdr); encode_getfattr_open(xdr, args->bitmask, args->open_bitmap, &hdr); + if (args->lg_args) { + encode_layoutget(xdr, args->lg_args, &hdr); + xdr_inline_pages(&req->rq_rcv_buf, hdr.replen << 2, + args->lg_args->layout.pages, + 0, args->lg_args->layout.pglen); + } encode_nops(&hdr); } @@ -6024,7 +6055,7 @@ static int decode_layoutget(struct xdr_stream *xdr, struct rpc_rqst *req, status = decode_op_hdr(xdr, OP_LAYOUTGET); if (status) - return status; + goto out; p = xdr_inline_decode(xdr, 4); if (unlikely(!p)) goto out_overflow; @@ -6037,7 +6068,8 @@ static int decode_layoutget(struct xdr_stream *xdr, struct rpc_rqst *req, if (!layout_count) { dprintk("%s: server responded with empty layout array\n", __func__); - return -EINVAL; + status = -EINVAL; + goto out; } p = xdr_inline_decode(xdr, 28); @@ -6062,7 +6094,8 @@ static int decode_layoutget(struct xdr_stream *xdr, struct rpc_rqst *req, dprintk("NFS: server cheating in layoutget reply: " "layout len %u > recvd %u\n", res->layoutp->len, recvd); - return -EINVAL; + status = -EINVAL; + goto out; } if (layout_count > 1) { @@ -6075,10 +6108,13 @@ static int decode_layoutget(struct xdr_stream *xdr, struct rpc_rqst *req, __func__, layout_count); } - return 0; +out: + res->status = status; + return status; out_overflow: print_overflow_msg(__func__, xdr); - return -EIO; + status = -EIO; + goto out; } static int decode_layoutreturn(struct xdr_stream *xdr, @@ -6177,6 +6213,13 @@ int decode_layoutreturn(struct xdr_stream *xdr, { return 0; } + +static int decode_layoutget(struct xdr_stream *xdr, struct rpc_rqst *req, + struct nfs4_layoutget_res *res) +{ + return 0; +} + #endif /* CONFIG_NFS_V4_1 */ /* @@ -6623,6 +6666,8 @@ static int nfs4_xdr_dec_open(struct rpc_rqst *rqstp, struct xdr_stream *xdr, if (res->access_request) decode_access(xdr, &res->access_supported, &res->access_result); decode_getfattr_label(xdr, res->f_attr, res->f_label, res->server); + if (res->lg_res) + decode_layoutget(xdr, rqstp, res->lg_res); out: return status; } @@ -6675,6 +6720,8 @@ static int nfs4_xdr_dec_open_noattr(struct rpc_rqst *rqstp, if (res->access_request) decode_access(xdr, &res->access_supported, &res->access_result); decode_getfattr(xdr, res->f_attr, res->server); + if (res->lg_res) + decode_layoutget(xdr, rqstp, res->lg_res); out: return status; } diff --git a/fs/nfs/pnfs.c b/fs/nfs/pnfs.c index ee723aa153a3..bcc3addec3c5 100644 --- a/fs/nfs/pnfs.c +++ b/fs/nfs/pnfs.c @@ -37,6 +37,7 @@ #include "nfs4trace.h" #include "delegation.h" #include "nfs42.h" +#include "nfs4_fs.h" #define NFSDBG_FACILITY NFSDBG_PNFS #define PNFS_LAYOUTGET_RETRY_TIMEOUT (120*HZ) @@ -915,45 +916,99 @@ pnfs_layoutgets_blocked(const struct pnfs_layout_hdr *lo) test_bit(NFS_LAYOUT_BULK_RECALL, &lo->plh_flags); } -/* - * Get layout from server. - * for now, assume that whole file layouts are requested. - * arg->offset: 0 - * arg->length: all ones - */ -static struct pnfs_layout_segment * -send_layoutget(struct pnfs_layout_hdr *lo, +static struct nfs_server * +pnfs_find_server(struct inode *inode, struct nfs_open_context *ctx) +{ + struct nfs_server *server; + + if (inode) { + server = NFS_SERVER(inode); + } else { + struct dentry *parent_dir = dget_parent(ctx->dentry); + server = NFS_SERVER(parent_dir->d_inode); + dput(parent_dir); + } + return server; +} + +static void nfs4_free_pages(struct page **pages, size_t size) +{ + int i; + + if (!pages) + return; + + for (i = 0; i < size; i++) { + if (!pages[i]) + break; + __free_page(pages[i]); + } + kfree(pages); +} + +static struct page **nfs4_alloc_pages(size_t size, gfp_t gfp_flags) +{ + struct page **pages; + int i; + + pages = kcalloc(size, sizeof(struct page *), gfp_flags); + if (!pages) { + dprintk("%s: can't alloc array of %zu pages\n", __func__, size); + return NULL; + } + + for (i = 0; i < size; i++) { + pages[i] = alloc_page(gfp_flags); + if (!pages[i]) { + dprintk("%s: failed to allocate page\n", __func__); + nfs4_free_pages(pages, size); + return NULL; + } + } + + return pages; +} + +static struct nfs4_layoutget * +pnfs_alloc_init_layoutget_args(struct inode *ino, struct nfs_open_context *ctx, - nfs4_stateid *stateid, + const nfs4_stateid *stateid, const struct pnfs_layout_range *range, - long *timeout, gfp_t gfp_flags) + gfp_t gfp_flags) { - struct inode *ino = lo->plh_inode; - struct nfs_server *server = NFS_SERVER(ino); + struct nfs_server *server = pnfs_find_server(ino, ctx); + size_t max_pages = max_response_pages(server); struct nfs4_layoutget *lgp; - loff_t i_size; dprintk("--> %s\n", __func__); - /* - * Synchronously retrieve layout information from server and - * store in lseg. If we race with a concurrent seqid morphing - * op, then re-send the LAYOUTGET. - */ lgp = kzalloc(sizeof(*lgp), gfp_flags); if (lgp == NULL) - return ERR_PTR(-ENOMEM); + return NULL; + + lgp->args.layout.pages = nfs4_alloc_pages(max_pages, gfp_flags); + if (!lgp->args.layout.pages) { + kfree(lgp); + return NULL; + } + lgp->args.layout.pglen = max_pages * PAGE_SIZE; + lgp->res.layoutp = &lgp->args.layout; - i_size = i_size_read(ino); + /* Don't confuse uninitialised result and success */ + lgp->res.status = -NFS4ERR_DELAY; lgp->args.minlength = PAGE_SIZE; if (lgp->args.minlength > range->length) lgp->args.minlength = range->length; - if (range->iomode == IOMODE_READ) { - if (range->offset >= i_size) - lgp->args.minlength = 0; - else if (i_size - range->offset < lgp->args.minlength) - lgp->args.minlength = i_size - range->offset; + if (ino) { + loff_t i_size = i_size_read(ino); + + if (range->iomode == IOMODE_READ) { + if (range->offset >= i_size) + lgp->args.minlength = 0; + else if (i_size - range->offset < lgp->args.minlength) + lgp->args.minlength = i_size - range->offset; + } } lgp->args.maxcount = PNFS_LAYOUT_MAXSIZE; pnfs_copy_range(&lgp->args.range, range); @@ -962,9 +1017,21 @@ send_layoutget(struct pnfs_layout_hdr *lo, lgp->args.ctx = get_nfs_open_context(ctx); nfs4_stateid_copy(&lgp->args.stateid, stateid); lgp->gfp_flags = gfp_flags; - lgp->cred = lo->plh_lc_cred; + lgp->cred = get_rpccred(ctx->cred); + lgp->callback_count = raw_seqcount_begin(&server->nfs_client->cl_callback_count); + return lgp; +} - return nfs4_proc_layoutget(lgp, timeout, gfp_flags); +void pnfs_layoutget_free(struct nfs4_layoutget *lgp) +{ + size_t max_pages = lgp->args.layout.pglen / PAGE_SIZE; + + nfs4_free_pages(lgp->args.layout.pages, max_pages); + if (lgp->args.inode) + pnfs_put_layout_hdr(NFS_I(lgp->args.inode)->layout); + put_rpccred(lgp->cred); + put_nfs_open_context(lgp->args.ctx); + kfree(lgp); } static void pnfs_clear_layoutcommit(struct inode *inode, @@ -1144,7 +1211,7 @@ _pnfs_return_layout(struct inode *ino) LIST_HEAD(tmp_list); nfs4_stateid stateid; int status = 0; - bool send; + bool send, valid_layout; dprintk("NFS: %s for inode %lu\n", __func__, ino->i_ino); @@ -1165,6 +1232,7 @@ _pnfs_return_layout(struct inode *ino) goto out_put_layout_hdr; spin_lock(&ino->i_lock); } + valid_layout = pnfs_layout_is_valid(lo); pnfs_clear_layoutcommit(ino, &tmp_list); pnfs_mark_matching_lsegs_invalid(lo, &tmp_list, NULL, 0); @@ -1178,7 +1246,8 @@ _pnfs_return_layout(struct inode *ino) } /* Don't send a LAYOUTRETURN if list was initially empty */ - if (!test_bit(NFS_LAYOUT_RETURN_REQUESTED, &lo->plh_flags)) { + if (!test_bit(NFS_LAYOUT_RETURN_REQUESTED, &lo->plh_flags) || + !valid_layout) { spin_unlock(&ino->i_lock); dprintk("NFS: %s no layout segments to return\n", __func__); goto out_put_layout_hdr; @@ -1671,6 +1740,22 @@ static void pnfs_clear_first_layoutget(struct pnfs_layout_hdr *lo) wake_up_bit(bitlock, NFS_LAYOUT_FIRST_LAYOUTGET); } +static void _add_to_server_list(struct pnfs_layout_hdr *lo, + struct nfs_server *server) +{ + if (list_empty(&lo->plh_layouts)) { + struct nfs_client *clp = server->nfs_client; + + /* The lo must be on the clp list if there is any + * chance of a CB_LAYOUTRECALL(FILE) coming in. + */ + spin_lock(&clp->cl_lock); + if (list_empty(&lo->plh_layouts)) + list_add_tail(&lo->plh_layouts, &server->layouts); + spin_unlock(&clp->cl_lock); + } +} + /* * Layout segment is retreived from the server if not cached. * The appropriate layout segment is referenced and returned to the caller. @@ -1694,6 +1779,7 @@ pnfs_update_layout(struct inode *ino, struct nfs_client *clp = server->nfs_client; struct pnfs_layout_hdr *lo = NULL; struct pnfs_layout_segment *lseg = NULL; + struct nfs4_layoutget *lgp; nfs4_stateid stateid; long timeout = 0; unsigned long giveup = jiffies + (clp->cl_lease_time << 1); @@ -1820,15 +1906,7 @@ lookup_again: atomic_inc(&lo->plh_outstanding); spin_unlock(&ino->i_lock); - if (list_empty(&lo->plh_layouts)) { - /* The lo must be on the clp list if there is any - * chance of a CB_LAYOUTRECALL(FILE) coming in. - */ - spin_lock(&clp->cl_lock); - if (list_empty(&lo->plh_layouts)) - list_add_tail(&lo->plh_layouts, &server->layouts); - spin_unlock(&clp->cl_lock); - } + _add_to_server_list(lo, server); pg_offset = arg.offset & ~PAGE_MASK; if (pg_offset) { @@ -1838,7 +1916,15 @@ lookup_again: if (arg.length != NFS4_MAX_UINT64) arg.length = PAGE_ALIGN(arg.length); - lseg = send_layoutget(lo, ctx, &stateid, &arg, &timeout, gfp_flags); + lgp = pnfs_alloc_init_layoutget_args(ino, ctx, &stateid, &arg, gfp_flags); + if (!lgp) { + trace_pnfs_update_layout(ino, pos, count, iomode, lo, NULL, + PNFS_UPDATE_LAYOUT_NOMEM); + atomic_dec(&lo->plh_outstanding); + goto out_put_layout_hdr; + } + + lseg = nfs4_proc_layoutget(lgp, &timeout); trace_pnfs_update_layout(ino, pos, count, iomode, lo, lseg, PNFS_UPDATE_LAYOUT_SEND_LAYOUTGET); atomic_dec(&lo->plh_outstanding); @@ -1919,6 +2005,171 @@ pnfs_sanity_check_layout_range(struct pnfs_layout_range *range) return true; } +static struct pnfs_layout_hdr * +_pnfs_grab_empty_layout(struct inode *ino, struct nfs_open_context *ctx) +{ + struct pnfs_layout_hdr *lo; + + spin_lock(&ino->i_lock); + lo = pnfs_find_alloc_layout(ino, ctx, GFP_KERNEL); + if (!lo) + goto out_unlock; + if (!test_bit(NFS_LAYOUT_INVALID_STID, &lo->plh_flags)) + goto out_unlock; + if (test_bit(NFS_LAYOUT_RETURN, &lo->plh_flags)) + goto out_unlock; + if (pnfs_layoutgets_blocked(lo)) + goto out_unlock; + if (test_and_set_bit(NFS_LAYOUT_FIRST_LAYOUTGET, &lo->plh_flags)) + goto out_unlock; + atomic_inc(&lo->plh_outstanding); + spin_unlock(&ino->i_lock); + _add_to_server_list(lo, NFS_SERVER(ino)); + return lo; + +out_unlock: + spin_unlock(&ino->i_lock); + pnfs_put_layout_hdr(lo); + return NULL; +} + +extern const nfs4_stateid current_stateid; + +static void _lgopen_prepare_attached(struct nfs4_opendata *data, + struct nfs_open_context *ctx) +{ + struct inode *ino = data->dentry->d_inode; + struct pnfs_layout_range rng = { + .iomode = (data->o_arg.fmode & FMODE_WRITE) ? + IOMODE_RW: IOMODE_READ, + .offset = 0, + .length = NFS4_MAX_UINT64, + }; + struct nfs4_layoutget *lgp; + struct pnfs_layout_hdr *lo; + + /* Heuristic: don't send layoutget if we have cached data */ + if (rng.iomode == IOMODE_READ && + (i_size_read(ino) == 0 || ino->i_mapping->nrpages != 0)) + return; + + lo = _pnfs_grab_empty_layout(ino, ctx); + if (!lo) + return; + lgp = pnfs_alloc_init_layoutget_args(ino, ctx, ¤t_stateid, + &rng, GFP_KERNEL); + if (!lgp) { + pnfs_clear_first_layoutget(lo); + pnfs_put_layout_hdr(lo); + return; + } + data->lgp = lgp; + data->o_arg.lg_args = &lgp->args; + data->o_res.lg_res = &lgp->res; +} + +static void _lgopen_prepare_floating(struct nfs4_opendata *data, + struct nfs_open_context *ctx) +{ + struct pnfs_layout_range rng = { + .iomode = (data->o_arg.fmode & FMODE_WRITE) ? + IOMODE_RW: IOMODE_READ, + .offset = 0, + .length = NFS4_MAX_UINT64, + }; + struct nfs4_layoutget *lgp; + + lgp = pnfs_alloc_init_layoutget_args(NULL, ctx, ¤t_stateid, + &rng, GFP_KERNEL); + if (!lgp) + return; + data->lgp = lgp; + data->o_arg.lg_args = &lgp->args; + data->o_res.lg_res = &lgp->res; +} + +void pnfs_lgopen_prepare(struct nfs4_opendata *data, + struct nfs_open_context *ctx) +{ + struct nfs_server *server = NFS_SERVER(data->dir->d_inode); + + if (!(pnfs_enabled_sb(server) && + server->pnfs_curr_ld->flags & PNFS_LAYOUTGET_ON_OPEN)) + return; + /* Could check on max_ops, but currently hardcoded high enough */ + if (!nfs_server_capable(data->dir->d_inode, NFS_CAP_LGOPEN)) + return; + if (data->state) + _lgopen_prepare_attached(data, ctx); + else + _lgopen_prepare_floating(data, ctx); +} + +void pnfs_parse_lgopen(struct inode *ino, struct nfs4_layoutget *lgp, + struct nfs_open_context *ctx) +{ + struct pnfs_layout_hdr *lo; + struct pnfs_layout_segment *lseg; + struct nfs_server *srv = NFS_SERVER(ino); + u32 iomode; + + if (!lgp) + return; + dprintk("%s: entered with status %i\n", __func__, lgp->res.status); + if (lgp->res.status) { + switch (lgp->res.status) { + default: + break; + /* + * Halt lgopen attempts if the server doesn't recognise + * the "current stateid" value, the layout type, or the + * layoutget operation as being valid. + * Also if it complains about too many ops in the compound + * or of the request/reply being too big. + */ + case -NFS4ERR_BAD_STATEID: + case -NFS4ERR_NOTSUPP: + case -NFS4ERR_REP_TOO_BIG: + case -NFS4ERR_REP_TOO_BIG_TO_CACHE: + case -NFS4ERR_REQ_TOO_BIG: + case -NFS4ERR_TOO_MANY_OPS: + case -NFS4ERR_UNKNOWN_LAYOUTTYPE: + srv->caps &= ~NFS_CAP_LGOPEN; + } + return; + } + if (!lgp->args.inode) { + lo = _pnfs_grab_empty_layout(ino, ctx); + if (!lo) + return; + lgp->args.inode = ino; + } else + lo = NFS_I(lgp->args.inode)->layout; + + if (read_seqcount_retry(&srv->nfs_client->cl_callback_count, + lgp->callback_count)) + return; + lseg = pnfs_layout_process(lgp); + if (!IS_ERR(lseg)) { + iomode = lgp->args.range.iomode; + pnfs_layout_clear_fail_bit(lo, pnfs_iomode_to_fail_bit(iomode)); + pnfs_put_lseg(lseg); + } +} + +void nfs4_lgopen_release(struct nfs4_layoutget *lgp) +{ + if (lgp != NULL) { + struct inode *inode = lgp->args.inode; + if (inode) { + struct pnfs_layout_hdr *lo = NFS_I(inode)->layout; + atomic_dec(&lo->plh_outstanding); + pnfs_clear_first_layoutget(lo); + } + pnfs_layoutget_free(lgp); + } +} + struct pnfs_layout_segment * pnfs_layout_process(struct nfs4_layoutget *lgp) { @@ -1984,8 +2235,6 @@ out_forget: spin_unlock(&ino->i_lock); lseg->pls_layout = lo; NFS_SERVER(ino)->pnfs_curr_ld->free_lseg(lseg); - if (!pnfs_layout_is_valid(lo)) - nfs_commit_inode(ino, 0); return ERR_PTR(-EAGAIN); } diff --git a/fs/nfs/pnfs.h b/fs/nfs/pnfs.h index daf6cbf5c15f..a8f5e6b16749 100644 --- a/fs/nfs/pnfs.h +++ b/fs/nfs/pnfs.h @@ -35,6 +35,8 @@ #include <linux/nfs_page.h> #include <linux/workqueue.h> +struct nfs4_opendata; + enum { NFS_LSEG_VALID = 0, /* cleared when lseg is recalled/returned */ NFS_LSEG_ROC, /* roc bit received from server */ @@ -110,6 +112,7 @@ enum layoutdriver_policy_flags { PNFS_LAYOUTRET_ON_SETATTR = 1 << 0, PNFS_LAYOUTRET_ON_ERROR = 1 << 1, PNFS_READ_WHOLE_PAGE = 1 << 2, + PNFS_LAYOUTGET_ON_OPEN = 1 << 3, }; struct nfs4_deviceid_node; @@ -223,10 +226,11 @@ extern int pnfs_register_layoutdriver(struct pnfs_layoutdriver_type *); extern void pnfs_unregister_layoutdriver(struct pnfs_layoutdriver_type *); /* nfs4proc.c */ +extern size_t max_response_pages(struct nfs_server *server); extern int nfs4_proc_getdeviceinfo(struct nfs_server *server, struct pnfs_device *dev, struct rpc_cred *cred); -extern struct pnfs_layout_segment* nfs4_proc_layoutget(struct nfs4_layoutget *lgp, long *timeout, gfp_t gfp_flags); +extern struct pnfs_layout_segment* nfs4_proc_layoutget(struct nfs4_layoutget *lgp, long *timeout); extern int nfs4_proc_layoutreturn(struct nfs4_layoutreturn *lrp, bool sync); /* pnfs.c */ @@ -246,6 +250,7 @@ size_t pnfs_generic_pg_test(struct nfs_pageio_descriptor *pgio, struct nfs_page *prev, struct nfs_page *req); void pnfs_set_lo_fail(struct pnfs_layout_segment *lseg); struct pnfs_layout_segment *pnfs_layout_process(struct nfs4_layoutget *lgp); +void pnfs_layoutget_free(struct nfs4_layoutget *lgp); void pnfs_free_lseg_list(struct list_head *tmp_list); void pnfs_destroy_layout(struct nfs_inode *); void pnfs_destroy_all_layouts(struct nfs_client *); @@ -375,6 +380,11 @@ void pnfs_layout_mark_request_commit(struct nfs_page *req, struct pnfs_layout_segment *lseg, struct nfs_commit_info *cinfo, u32 ds_commit_idx); +void pnfs_lgopen_prepare(struct nfs4_opendata *data, + struct nfs_open_context *ctx); +void pnfs_parse_lgopen(struct inode *ino, struct nfs4_layoutget *lgp, + struct nfs_open_context *ctx); +void nfs4_lgopen_release(struct nfs4_layoutget *lgp); static inline bool nfs_have_layout(struct inode *inode) { @@ -775,6 +785,22 @@ static inline bool nfs4_refresh_layout_stateid(nfs4_stateid *dst, { return false; } + +static inline void pnfs_lgopen_prepare(struct nfs4_opendata *data, + struct nfs_open_context *ctx) +{ +} + +static inline void pnfs_parse_lgopen(struct inode *ino, + struct nfs4_layoutget *lgp, + struct nfs_open_context *ctx) +{ +} + +static inline void nfs4_lgopen_release(struct nfs4_layoutget *lgp) +{ +} + #endif /* CONFIG_NFS_V4_1 */ #if IS_ENABLED(CONFIG_NFS_V4_2) diff --git a/fs/nfs/proc.c b/fs/nfs/proc.c index 4e93d6308733..e0c257bd62b9 100644 --- a/fs/nfs/proc.c +++ b/fs/nfs/proc.c @@ -99,7 +99,8 @@ nfs_proc_get_root(struct nfs_server *server, struct nfs_fh *fhandle, */ static int nfs_proc_getattr(struct nfs_server *server, struct nfs_fh *fhandle, - struct nfs_fattr *fattr, struct nfs4_label *label) + struct nfs_fattr *fattr, struct nfs4_label *label, + struct inode *inode) { struct rpc_message msg = { .rpc_proc = &nfs_procedures[NFSPROC_GETATTR], @@ -321,7 +322,9 @@ nfs_proc_remove(struct inode *dir, struct dentry *dentry) } static void -nfs_proc_unlink_setup(struct rpc_message *msg, struct dentry *dentry) +nfs_proc_unlink_setup(struct rpc_message *msg, + struct dentry *dentry, + struct inode *inode) { msg->rpc_proc = &nfs_procedures[NFSPROC_REMOVE]; } @@ -618,7 +621,8 @@ static int nfs_write_done(struct rpc_task *task, struct nfs_pgio_header *hdr) } static void nfs_proc_write_setup(struct nfs_pgio_header *hdr, - struct rpc_message *msg) + struct rpc_message *msg, + struct rpc_clnt **clnt) { /* Note: NFSv2 ignores @stable and always uses NFS_FILE_SYNC */ hdr->args.stable = NFS_FILE_SYNC; @@ -631,7 +635,8 @@ static void nfs_proc_commit_rpc_prepare(struct rpc_task *task, struct nfs_commit } static void -nfs_proc_commit_setup(struct nfs_commit_data *data, struct rpc_message *msg) +nfs_proc_commit_setup(struct nfs_commit_data *data, struct rpc_message *msg, + struct rpc_clnt **clnt) { BUG(); } diff --git a/fs/nfs/unlink.c b/fs/nfs/unlink.c index bf54fc9ae135..fd61bf0fce63 100644 --- a/fs/nfs/unlink.c +++ b/fs/nfs/unlink.c @@ -85,7 +85,7 @@ static const struct rpc_call_ops nfs_unlink_ops = { .rpc_call_prepare = nfs_unlink_prepare, }; -static void nfs_do_call_unlink(struct nfs_unlinkdata *data) +static void nfs_do_call_unlink(struct inode *inode, struct nfs_unlinkdata *data) { struct rpc_message msg = { .rpc_argp = &data->args, @@ -105,7 +105,7 @@ static void nfs_do_call_unlink(struct nfs_unlinkdata *data) data->args.fh = NFS_FH(dir); nfs_fattr_init(data->res.dir_attr); - NFS_PROTO(dir)->unlink_setup(&msg, data->dentry); + NFS_PROTO(dir)->unlink_setup(&msg, data->dentry, inode); task_setup_data.rpc_client = NFS_CLIENT(dir); task = rpc_run_task(&task_setup_data); @@ -113,7 +113,7 @@ static void nfs_do_call_unlink(struct nfs_unlinkdata *data) rpc_put_task_async(task); } -static int nfs_call_unlink(struct dentry *dentry, struct nfs_unlinkdata *data) +static int nfs_call_unlink(struct dentry *dentry, struct inode *inode, struct nfs_unlinkdata *data) { struct inode *dir = d_inode(dentry->d_parent); struct dentry *alias; @@ -153,7 +153,7 @@ static int nfs_call_unlink(struct dentry *dentry, struct nfs_unlinkdata *data) return ret; } data->dentry = alias; - nfs_do_call_unlink(data); + nfs_do_call_unlink(inode, data); return 1; } @@ -231,7 +231,7 @@ nfs_complete_unlink(struct dentry *dentry, struct inode *inode) dentry->d_fsdata = NULL; spin_unlock(&dentry->d_lock); - if (NFS_STALE(inode) || !nfs_call_unlink(dentry, data)) + if (NFS_STALE(inode) || !nfs_call_unlink(dentry, inode, data)) nfs_free_unlinkdata(data); } @@ -448,6 +448,7 @@ nfs_sillyrename(struct inode *dir, struct dentry *dentry) unsigned char silly[SILLYNAME_LEN + 1]; unsigned long long fileid; struct dentry *sdentry; + struct inode *inode = d_inode(dentry); struct rpc_task *task; int error = -EBUSY; @@ -485,6 +486,8 @@ nfs_sillyrename(struct inode *dir, struct dentry *dentry) goto out; } while (d_inode(sdentry) != NULL); /* need negative lookup */ + ihold(inode); + /* queue unlink first. Can't do this from rpc_release as it * has to allocate memory */ @@ -509,6 +512,12 @@ nfs_sillyrename(struct inode *dir, struct dentry *dentry) case 0: /* The rename succeeded */ nfs_set_verifier(dentry, nfs_save_change_attribute(dir)); + spin_lock(&inode->i_lock); + NFS_I(inode)->attr_gencount = nfs_inc_attr_generation_counter(); + NFS_I(inode)->cache_validity |= NFS_INO_INVALID_CHANGE + | NFS_INO_INVALID_CTIME + | NFS_INO_REVAL_FORCED; + spin_unlock(&inode->i_lock); d_move(dentry, sdentry); break; case -ERESTARTSYS: @@ -519,6 +528,7 @@ nfs_sillyrename(struct inode *dir, struct dentry *dentry) } rpc_put_task(task); out_dput: + iput(inode); dput(sdentry); out: return error; diff --git a/fs/nfs/write.c b/fs/nfs/write.c index 0193053bc139..a057b4f45a46 100644 --- a/fs/nfs/write.c +++ b/fs/nfs/write.c @@ -1375,12 +1375,9 @@ static void nfs_initiate_write(struct nfs_pgio_header *hdr, int priority = flush_task_priority(how); task_setup_data->priority = priority; - rpc_ops->write_setup(hdr, msg); + rpc_ops->write_setup(hdr, msg, &task_setup_data->rpc_client); trace_nfs_initiate_write(hdr->inode, hdr->io_start, hdr->good_bytes, hdr->args.stable); - - nfs4_state_protect_write(NFS_SERVER(hdr->inode)->nfs_client, - &task_setup_data->rpc_client, msg, hdr); } /* If a nfs_flush_* function fails, it should remove reqs from @head and @@ -1669,14 +1666,11 @@ int nfs_initiate_commit(struct rpc_clnt *clnt, struct nfs_commit_data *data, .priority = priority, }; /* Set up the initial task struct. */ - nfs_ops->commit_setup(data, &msg); + nfs_ops->commit_setup(data, &msg, &task_setup_data.rpc_client); trace_nfs_initiate_commit(data); dprintk("NFS: initiated commit call\n"); - nfs4_state_protect(NFS_SERVER(data->inode)->nfs_client, - NFS_SP4_MACH_CRED_COMMIT, &task_setup_data.rpc_client, &msg); - task = rpc_run_task(&task_setup_data); if (IS_ERR(task)) return PTR_ERR(task); diff --git a/include/linux/nfs_fs_sb.h b/include/linux/nfs_fs_sb.h index 4e735be53e70..74ae3e1d19a0 100644 --- a/include/linux/nfs_fs_sb.h +++ b/include/linux/nfs_fs_sb.h @@ -28,6 +28,7 @@ struct nfs41_impl_id; struct nfs_client { refcount_t cl_count; atomic_t cl_mds_count; + seqcount_t cl_callback_count; int cl_cons_state; /* current construction state (-ve: init error) */ #define NFS_CS_READY 0 /* ready to be used */ #define NFS_CS_INITING 1 /* busy initialising */ @@ -235,6 +236,7 @@ struct nfs_server { #define NFS_CAP_ACLS (1U << 3) #define NFS_CAP_ATOMIC_OPEN (1U << 4) /* #define NFS_CAP_CHANGE_ATTR (1U << 5) */ +#define NFS_CAP_LGOPEN (1U << 5) #define NFS_CAP_FILEID (1U << 6) #define NFS_CAP_MODE (1U << 7) #define NFS_CAP_NLINK (1U << 8) diff --git a/include/linux/nfs_xdr.h b/include/linux/nfs_xdr.h index 34d28564ecf3..9dee3c23895d 100644 --- a/include/linux/nfs_xdr.h +++ b/include/linux/nfs_xdr.h @@ -259,6 +259,7 @@ struct nfs4_layoutget_args { struct nfs4_layoutget_res { struct nfs4_sequence_res seq_res; + int status; __u32 return_on_close; struct pnfs_layout_range range; __u32 type; @@ -270,6 +271,7 @@ struct nfs4_layoutget { struct nfs4_layoutget_args args; struct nfs4_layoutget_res res; struct rpc_cred *cred; + unsigned callback_count; gfp_t gfp_flags; }; @@ -435,6 +437,7 @@ struct nfs_openargs { enum createmode4 createmode; const struct nfs4_label *label; umode_t umask; + struct nfs4_layoutget_args *lg_args; }; struct nfs_openres { @@ -457,6 +460,7 @@ struct nfs_openres { __u32 access_request; __u32 access_supported; __u32 access_result; + struct nfs4_layoutget_res *lg_res; }; /* @@ -1577,7 +1581,8 @@ struct nfs_rpc_ops { struct dentry *(*try_mount) (int, const char *, struct nfs_mount_info *, struct nfs_subversion *); int (*getattr) (struct nfs_server *, struct nfs_fh *, - struct nfs_fattr *, struct nfs4_label *); + struct nfs_fattr *, struct nfs4_label *, + struct inode *); int (*setattr) (struct dentry *, struct nfs_fattr *, struct iattr *); int (*lookup) (struct inode *, const struct qstr *, @@ -1591,7 +1596,7 @@ struct nfs_rpc_ops { int (*create) (struct inode *, struct dentry *, struct iattr *, int); int (*remove) (struct inode *, struct dentry *); - void (*unlink_setup) (struct rpc_message *, struct dentry *); + void (*unlink_setup) (struct rpc_message *, struct dentry *, struct inode *); void (*unlink_rpc_prepare) (struct rpc_task *, struct nfs_unlinkdata *); int (*unlink_done) (struct rpc_task *, struct inode *); void (*rename_setup) (struct rpc_message *msg, @@ -1620,9 +1625,11 @@ struct nfs_rpc_ops { struct nfs_pgio_header *); void (*read_setup)(struct nfs_pgio_header *, struct rpc_message *); int (*read_done)(struct rpc_task *, struct nfs_pgio_header *); - void (*write_setup)(struct nfs_pgio_header *, struct rpc_message *); + void (*write_setup)(struct nfs_pgio_header *, struct rpc_message *, + struct rpc_clnt **); int (*write_done)(struct rpc_task *, struct nfs_pgio_header *); - void (*commit_setup) (struct nfs_commit_data *, struct rpc_message *); + void (*commit_setup) (struct nfs_commit_data *, struct rpc_message *, + struct rpc_clnt **); void (*commit_rpc_prepare)(struct rpc_task *, struct nfs_commit_data *); int (*commit_done) (struct rpc_task *, struct nfs_commit_data *); int (*lock)(struct file *, int, struct file_lock *); diff --git a/include/linux/rculist.h b/include/linux/rculist.h index 127f534fec94..36df6ccbc874 100644 --- a/include/linux/rculist.h +++ b/include/linux/rculist.h @@ -404,6 +404,19 @@ static inline void list_splice_tail_init_rcu(struct list_head *list, pos = list_entry_rcu(pos->member.next, typeof(*pos), member)) /** + * list_for_each_entry_from_rcu - iterate over a list from current point + * @pos: the type * to use as a loop cursor. + * @head: the head for your list. + * @member: the name of the list_node within the struct. + * + * Iterate over the tail of a list starting from a given position, + * which must have been in the list when the RCU read lock was taken. + */ +#define list_for_each_entry_from_rcu(pos, head, member) \ + for (; &(pos)->member != (head); \ + pos = list_entry_rcu(pos->member.next, typeof(*(pos)), member)) + +/** * hlist_del_rcu - deletes entry from hash list without re-initialization * @n: the element to delete from the hash list. * diff --git a/include/linux/sunrpc/rpc_rdma.h b/include/linux/sunrpc/rpc_rdma.h index 8f144db73e38..92d182fd8e3b 100644 --- a/include/linux/sunrpc/rpc_rdma.h +++ b/include/linux/sunrpc/rpc_rdma.h @@ -1,3 +1,4 @@ +/* SPDX-License-Identifier: GPL-2.0 OR BSD-3-Clause */ /* * Copyright (c) 2015-2017 Oracle. All rights reserved. * Copyright (c) 2003-2007 Network Appliance, Inc. All rights reserved. diff --git a/include/linux/sunrpc/xprt.h b/include/linux/sunrpc/xprt.h index 5fea0fb420df..336fd1a19cca 100644 --- a/include/linux/sunrpc/xprt.h +++ b/include/linux/sunrpc/xprt.h @@ -84,7 +84,6 @@ struct rpc_rqst { void (*rq_release_snd_buf)(struct rpc_rqst *); /* release rq_enc_pages */ struct list_head rq_list; - void *rq_xprtdata; /* Per-xprt private data */ void *rq_buffer; /* Call XDR encode buffer */ size_t rq_callsize; void *rq_rbuffer; /* Reply XDR decode buffer */ @@ -127,6 +126,8 @@ struct rpc_xprt_ops { int (*reserve_xprt)(struct rpc_xprt *xprt, struct rpc_task *task); void (*release_xprt)(struct rpc_xprt *xprt, struct rpc_task *task); void (*alloc_slot)(struct rpc_xprt *xprt, struct rpc_task *task); + void (*free_slot)(struct rpc_xprt *xprt, + struct rpc_rqst *req); void (*rpcbind)(struct rpc_task *task); void (*set_port)(struct rpc_xprt *xprt, unsigned short port); void (*connect)(struct rpc_xprt *xprt, struct rpc_task *task); @@ -324,10 +325,13 @@ struct xprt_class { struct rpc_xprt *xprt_create_transport(struct xprt_create *args); void xprt_connect(struct rpc_task *task); void xprt_reserve(struct rpc_task *task); +void xprt_request_init(struct rpc_task *task); void xprt_retry_reserve(struct rpc_task *task); int xprt_reserve_xprt(struct rpc_xprt *xprt, struct rpc_task *task); int xprt_reserve_xprt_cong(struct rpc_xprt *xprt, struct rpc_task *task); void xprt_alloc_slot(struct rpc_xprt *xprt, struct rpc_task *task); +void xprt_free_slot(struct rpc_xprt *xprt, + struct rpc_rqst *req); void xprt_lock_and_alloc_slot(struct rpc_xprt *xprt, struct rpc_task *task); bool xprt_prepare_transmit(struct rpc_task *task); void xprt_transmit(struct rpc_task *task); diff --git a/include/linux/sunrpc/xprtrdma.h b/include/linux/sunrpc/xprtrdma.h index 5859563e3c1f..86fc38ff0355 100644 --- a/include/linux/sunrpc/xprtrdma.h +++ b/include/linux/sunrpc/xprtrdma.h @@ -1,3 +1,4 @@ +/* SPDX-License-Identifier: GPL-2.0 OR BSD-3-Clause */ /* * Copyright (c) 2003-2007 Network Appliance, Inc. All rights reserved. * diff --git a/include/trace/events/rpcrdma.h b/include/trace/events/rpcrdma.h index 094a676d92a7..53df203b8057 100644 --- a/include/trace/events/rpcrdma.h +++ b/include/trace/events/rpcrdma.h @@ -530,24 +530,54 @@ TRACE_EVENT(xprtrdma_post_send, TRACE_EVENT(xprtrdma_post_recv, TP_PROTO( - const struct rpcrdma_rep *rep, + const struct ib_cqe *cqe + ), + + TP_ARGS(cqe), + + TP_STRUCT__entry( + __field(const void *, cqe) + ), + + TP_fast_assign( + __entry->cqe = cqe; + ), + + TP_printk("cqe=%p", + __entry->cqe + ) +); + +TRACE_EVENT(xprtrdma_post_recvs, + TP_PROTO( + const struct rpcrdma_xprt *r_xprt, + unsigned int count, int status ), - TP_ARGS(rep, status), + TP_ARGS(r_xprt, count, status), TP_STRUCT__entry( - __field(const void *, rep) + __field(const void *, r_xprt) + __field(unsigned int, count) __field(int, status) + __field(int, posted) + __string(addr, rpcrdma_addrstr(r_xprt)) + __string(port, rpcrdma_portstr(r_xprt)) ), TP_fast_assign( - __entry->rep = rep; + __entry->r_xprt = r_xprt; + __entry->count = count; __entry->status = status; + __entry->posted = r_xprt->rx_buf.rb_posted_receives; + __assign_str(addr, rpcrdma_addrstr(r_xprt)); + __assign_str(port, rpcrdma_portstr(r_xprt)); ), - TP_printk("rep=%p status=%d", - __entry->rep, __entry->status + TP_printk("peer=[%s]:%s r_xprt=%p: %u new recvs, %d active (rc %d)", + __get_str(addr), __get_str(port), __entry->r_xprt, + __entry->count, __entry->posted, __entry->status ) ); @@ -586,28 +616,32 @@ TRACE_EVENT(xprtrdma_wc_send, TRACE_EVENT(xprtrdma_wc_receive, TP_PROTO( - const struct rpcrdma_rep *rep, const struct ib_wc *wc ), - TP_ARGS(rep, wc), + TP_ARGS(wc), TP_STRUCT__entry( - __field(const void *, rep) - __field(unsigned int, byte_len) + __field(const void *, cqe) + __field(u32, byte_len) __field(unsigned int, status) - __field(unsigned int, vendor_err) + __field(u32, vendor_err) ), TP_fast_assign( - __entry->rep = rep; - __entry->byte_len = wc->byte_len; + __entry->cqe = wc->wr_cqe; __entry->status = wc->status; - __entry->vendor_err = __entry->status ? wc->vendor_err : 0; + if (wc->status) { + __entry->byte_len = 0; + __entry->vendor_err = wc->vendor_err; + } else { + __entry->byte_len = wc->byte_len; + __entry->vendor_err = 0; + } ), - TP_printk("rep=%p, %u bytes: %s (%u/0x%x)", - __entry->rep, __entry->byte_len, + TP_printk("cqe=%p %u bytes: %s (%u/0x%x)", + __entry->cqe, __entry->byte_len, rdma_show_wc_status(__entry->status), __entry->status, __entry->vendor_err ) @@ -618,6 +652,7 @@ DEFINE_FRWR_DONE_EVENT(xprtrdma_wc_li); DEFINE_FRWR_DONE_EVENT(xprtrdma_wc_li_wake); DEFINE_MR_EVENT(xprtrdma_localinv); +DEFINE_MR_EVENT(xprtrdma_dma_map); DEFINE_MR_EVENT(xprtrdma_dma_unmap); DEFINE_MR_EVENT(xprtrdma_remoteinv); DEFINE_MR_EVENT(xprtrdma_recover_mr); @@ -801,7 +836,6 @@ TRACE_EVENT(xprtrdma_allocate, __field(unsigned int, task_id) __field(unsigned int, client_id) __field(const void *, req) - __field(const void *, rep) __field(size_t, callsize) __field(size_t, rcvsize) ), @@ -810,15 +844,13 @@ TRACE_EVENT(xprtrdma_allocate, __entry->task_id = task->tk_pid; __entry->client_id = task->tk_client->cl_clid; __entry->req = req; - __entry->rep = req ? req->rl_reply : NULL; __entry->callsize = task->tk_rqstp->rq_callsize; __entry->rcvsize = task->tk_rqstp->rq_rcvsize; ), - TP_printk("task:%u@%u req=%p rep=%p (%zu, %zu)", + TP_printk("task:%u@%u req=%p (%zu, %zu)", __entry->task_id, __entry->client_id, - __entry->req, __entry->rep, - __entry->callsize, __entry->rcvsize + __entry->req, __entry->callsize, __entry->rcvsize ) ); @@ -850,8 +882,6 @@ TRACE_EVENT(xprtrdma_rpc_done, ) ); -DEFINE_RXPRT_EVENT(xprtrdma_noreps); - /** ** Callback events **/ diff --git a/net/sunrpc/clnt.c b/net/sunrpc/clnt.c index c2266f387213..d839c33ae7d9 100644 --- a/net/sunrpc/clnt.c +++ b/net/sunrpc/clnt.c @@ -1546,6 +1546,7 @@ call_reserveresult(struct rpc_task *task) task->tk_status = 0; if (status >= 0) { if (task->tk_rqstp) { + xprt_request_init(task); task->tk_action = call_refresh; return; } diff --git a/net/sunrpc/xprt.c b/net/sunrpc/xprt.c index 70f005044f06..3c85af058227 100644 --- a/net/sunrpc/xprt.c +++ b/net/sunrpc/xprt.c @@ -66,7 +66,7 @@ * Local functions */ static void xprt_init(struct rpc_xprt *xprt, struct net *net); -static void xprt_request_init(struct rpc_task *, struct rpc_xprt *); +static __be32 xprt_alloc_xid(struct rpc_xprt *xprt); static void xprt_connect_status(struct rpc_task *task); static int __xprt_get_cong(struct rpc_xprt *, struct rpc_task *); static void __xprt_put_cong(struct rpc_xprt *, struct rpc_rqst *); @@ -987,6 +987,8 @@ bool xprt_prepare_transmit(struct rpc_task *task) task->tk_status = -EAGAIN; goto out_unlock; } + if (!bc_prealloc(req) && !req->rq_xmit_bytes_sent) + req->rq_xid = xprt_alloc_xid(xprt); ret = true; out_unlock: spin_unlock_bh(&xprt->transport_lock); @@ -1163,10 +1165,10 @@ void xprt_alloc_slot(struct rpc_xprt *xprt, struct rpc_task *task) out_init_req: xprt->stat.max_slots = max_t(unsigned int, xprt->stat.max_slots, xprt->num_reqs); + spin_unlock(&xprt->reserve_lock); + task->tk_status = 0; task->tk_rqstp = req; - xprt_request_init(task, xprt); - spin_unlock(&xprt->reserve_lock); } EXPORT_SYMBOL_GPL(xprt_alloc_slot); @@ -1184,7 +1186,7 @@ void xprt_lock_and_alloc_slot(struct rpc_xprt *xprt, struct rpc_task *task) } EXPORT_SYMBOL_GPL(xprt_lock_and_alloc_slot); -static void xprt_free_slot(struct rpc_xprt *xprt, struct rpc_rqst *req) +void xprt_free_slot(struct rpc_xprt *xprt, struct rpc_rqst *req) { spin_lock(&xprt->reserve_lock); if (!xprt_dynamic_free_slot(xprt, req)) { @@ -1194,6 +1196,7 @@ static void xprt_free_slot(struct rpc_xprt *xprt, struct rpc_rqst *req) xprt_wake_up_backlog(xprt); spin_unlock(&xprt->reserve_lock); } +EXPORT_SYMBOL_GPL(xprt_free_slot); static void xprt_free_all_slots(struct rpc_xprt *xprt) { @@ -1303,8 +1306,9 @@ static inline void xprt_init_xid(struct rpc_xprt *xprt) xprt->xid = prandom_u32(); } -static void xprt_request_init(struct rpc_task *task, struct rpc_xprt *xprt) +void xprt_request_init(struct rpc_task *task) { + struct rpc_xprt *xprt = task->tk_xprt; struct rpc_rqst *req = task->tk_rqstp; INIT_LIST_HEAD(&req->rq_list); @@ -1312,7 +1316,6 @@ static void xprt_request_init(struct rpc_task *task, struct rpc_xprt *xprt) req->rq_task = task; req->rq_xprt = xprt; req->rq_buffer = NULL; - req->rq_xid = xprt_alloc_xid(xprt); req->rq_connect_cookie = xprt->connect_cookie - 1; req->rq_bytes_sent = 0; req->rq_snd_buf.len = 0; @@ -1373,7 +1376,7 @@ void xprt_release(struct rpc_task *task) dprintk("RPC: %5u release request %p\n", task->tk_pid, req); if (likely(!bc_prealloc(req))) - xprt_free_slot(xprt, req); + xprt->ops->free_slot(xprt, req); else xprt_free_bc_request(req); } diff --git a/net/sunrpc/xprtrdma/backchannel.c b/net/sunrpc/xprtrdma/backchannel.c index dbedc872ec10..90adeff4c06b 100644 --- a/net/sunrpc/xprtrdma/backchannel.c +++ b/net/sunrpc/xprtrdma/backchannel.c @@ -31,29 +31,41 @@ static void rpcrdma_bc_free_rqst(struct rpcrdma_xprt *r_xprt, spin_unlock(&buf->rb_reqslock); rpcrdma_destroy_req(req); - - kfree(rqst); } -static int rpcrdma_bc_setup_rqst(struct rpcrdma_xprt *r_xprt, - struct rpc_rqst *rqst) +static int rpcrdma_bc_setup_reqs(struct rpcrdma_xprt *r_xprt, + unsigned int count) { - struct rpcrdma_regbuf *rb; - struct rpcrdma_req *req; - size_t size; + struct rpc_xprt *xprt = &r_xprt->rx_xprt; + struct rpc_rqst *rqst; + unsigned int i; + + for (i = 0; i < (count << 1); i++) { + struct rpcrdma_regbuf *rb; + struct rpcrdma_req *req; + size_t size; + + req = rpcrdma_create_req(r_xprt); + if (IS_ERR(req)) + return PTR_ERR(req); + rqst = &req->rl_slot; + + rqst->rq_xprt = xprt; + INIT_LIST_HEAD(&rqst->rq_list); + INIT_LIST_HEAD(&rqst->rq_bc_list); + __set_bit(RPC_BC_PA_IN_USE, &rqst->rq_bc_pa_state); + spin_lock_bh(&xprt->bc_pa_lock); + list_add(&rqst->rq_bc_pa_list, &xprt->bc_pa_list); + spin_unlock_bh(&xprt->bc_pa_lock); - req = rpcrdma_create_req(r_xprt); - if (IS_ERR(req)) - return PTR_ERR(req); - - size = r_xprt->rx_data.inline_rsize; - rb = rpcrdma_alloc_regbuf(size, DMA_TO_DEVICE, GFP_KERNEL); - if (IS_ERR(rb)) - goto out_fail; - req->rl_sendbuf = rb; - xdr_buf_init(&rqst->rq_snd_buf, rb->rg_base, - min_t(size_t, size, PAGE_SIZE)); - rpcrdma_set_xprtdata(rqst, req); + size = r_xprt->rx_data.inline_rsize; + rb = rpcrdma_alloc_regbuf(size, DMA_TO_DEVICE, GFP_KERNEL); + if (IS_ERR(rb)) + goto out_fail; + req->rl_sendbuf = rb; + xdr_buf_init(&rqst->rq_snd_buf, rb->rg_base, + min_t(size_t, size, PAGE_SIZE)); + } return 0; out_fail: @@ -61,23 +73,6 @@ out_fail: return -ENOMEM; } -/* Allocate and add receive buffers to the rpcrdma_buffer's - * existing list of rep's. These are released when the - * transport is destroyed. - */ -static int rpcrdma_bc_setup_reps(struct rpcrdma_xprt *r_xprt, - unsigned int count) -{ - int rc = 0; - - while (count--) { - rc = rpcrdma_create_rep(r_xprt); - if (rc) - break; - } - return rc; -} - /** * xprt_rdma_bc_setup - Pre-allocate resources for handling backchannel requests * @xprt: transport associated with these backchannel resources @@ -88,9 +83,6 @@ static int rpcrdma_bc_setup_reps(struct rpcrdma_xprt *r_xprt, int xprt_rdma_bc_setup(struct rpc_xprt *xprt, unsigned int reqs) { struct rpcrdma_xprt *r_xprt = rpcx_to_rdmax(xprt); - struct rpcrdma_buffer *buffer = &r_xprt->rx_buf; - struct rpc_rqst *rqst; - unsigned int i; int rc; /* The backchannel reply path returns each rpc_rqst to the @@ -105,35 +97,11 @@ int xprt_rdma_bc_setup(struct rpc_xprt *xprt, unsigned int reqs) if (reqs > RPCRDMA_BACKWARD_WRS >> 1) goto out_err; - for (i = 0; i < (reqs << 1); i++) { - rqst = kzalloc(sizeof(*rqst), GFP_KERNEL); - if (!rqst) - goto out_free; - - dprintk("RPC: %s: new rqst %p\n", __func__, rqst); - - rqst->rq_xprt = &r_xprt->rx_xprt; - INIT_LIST_HEAD(&rqst->rq_list); - INIT_LIST_HEAD(&rqst->rq_bc_list); - __set_bit(RPC_BC_PA_IN_USE, &rqst->rq_bc_pa_state); - - if (rpcrdma_bc_setup_rqst(r_xprt, rqst)) - goto out_free; - - spin_lock_bh(&xprt->bc_pa_lock); - list_add(&rqst->rq_bc_pa_list, &xprt->bc_pa_list); - spin_unlock_bh(&xprt->bc_pa_lock); - } - - rc = rpcrdma_bc_setup_reps(r_xprt, reqs); + rc = rpcrdma_bc_setup_reqs(r_xprt, reqs); if (rc) goto out_free; - rc = rpcrdma_ep_post_extra_recv(r_xprt, reqs); - if (rc) - goto out_free; - - buffer->rb_bc_srv_max_requests = reqs; + r_xprt->rx_buf.rb_bc_srv_max_requests = reqs; request_module("svcrdma"); trace_xprtrdma_cb_setup(r_xprt, reqs); return 0; @@ -237,6 +205,7 @@ int xprt_rdma_bc_send_reply(struct rpc_rqst *rqst) if (rc < 0) goto failed_marshal; + rpcrdma_post_recvs(r_xprt, true); if (rpcrdma_ep_post(&r_xprt->rx_ia, &r_xprt->rx_ep, req)) goto drop_connection; return 0; @@ -277,10 +246,14 @@ void xprt_rdma_bc_destroy(struct rpc_xprt *xprt, unsigned int reqs) */ void xprt_rdma_bc_free_rqst(struct rpc_rqst *rqst) { + struct rpcrdma_req *req = rpcr_to_rdmar(rqst); struct rpc_xprt *xprt = rqst->rq_xprt; dprintk("RPC: %s: freeing rqst %p (req %p)\n", - __func__, rqst, rpcr_to_rdmar(rqst)); + __func__, rqst, req); + + rpcrdma_recv_buffer_put(req->rl_reply); + req->rl_reply = NULL; spin_lock_bh(&xprt->bc_pa_lock); list_add_tail(&rqst->rq_bc_pa_list, &xprt->bc_pa_list); diff --git a/net/sunrpc/xprtrdma/fmr_ops.c b/net/sunrpc/xprtrdma/fmr_ops.c index 3c8d19f6e320..17fb1e025654 100644 --- a/net/sunrpc/xprtrdma/fmr_ops.c +++ b/net/sunrpc/xprtrdma/fmr_ops.c @@ -159,10 +159,32 @@ out_release: fmr_op_release_mr(mr); } +/* On success, sets: + * ep->rep_attr.cap.max_send_wr + * ep->rep_attr.cap.max_recv_wr + * cdata->max_requests + * ia->ri_max_segs + */ static int fmr_op_open(struct rpcrdma_ia *ia, struct rpcrdma_ep *ep, struct rpcrdma_create_data_internal *cdata) { + int max_qp_wr; + + max_qp_wr = ia->ri_device->attrs.max_qp_wr; + max_qp_wr -= RPCRDMA_BACKWARD_WRS; + max_qp_wr -= 1; + if (max_qp_wr < RPCRDMA_MIN_SLOT_TABLE) + return -ENOMEM; + if (cdata->max_requests > max_qp_wr) + cdata->max_requests = max_qp_wr; + ep->rep_attr.cap.max_send_wr = cdata->max_requests; + ep->rep_attr.cap.max_send_wr += RPCRDMA_BACKWARD_WRS; + ep->rep_attr.cap.max_send_wr += 1; /* for ib_drain_sq */ + ep->rep_attr.cap.max_recv_wr = cdata->max_requests; + ep->rep_attr.cap.max_recv_wr += RPCRDMA_BACKWARD_WRS; + ep->rep_attr.cap.max_recv_wr += 1; /* for ib_drain_rq */ + ia->ri_max_segs = max_t(unsigned int, 1, RPCRDMA_MAX_DATA_SEGS / RPCRDMA_MAX_FMR_SGES); return 0; @@ -222,6 +244,7 @@ fmr_op_map(struct rpcrdma_xprt *r_xprt, struct rpcrdma_mr_seg *seg, mr->mr_sg, i, mr->mr_dir); if (!mr->mr_nents) goto out_dmamap_err; + trace_xprtrdma_dma_map(mr); for (i = 0, dma_pages = mr->fmr.fm_physaddrs; i < mr->mr_nents; i++) dma_pages[i] = sg_dma_address(&mr->mr_sg[i]); diff --git a/net/sunrpc/xprtrdma/frwr_ops.c b/net/sunrpc/xprtrdma/frwr_ops.c index 2d2fefbb810b..c040de196e13 100644 --- a/net/sunrpc/xprtrdma/frwr_ops.c +++ b/net/sunrpc/xprtrdma/frwr_ops.c @@ -204,12 +204,22 @@ out_release: frwr_op_release_mr(mr); } +/* On success, sets: + * ep->rep_attr.cap.max_send_wr + * ep->rep_attr.cap.max_recv_wr + * cdata->max_requests + * ia->ri_max_segs + * + * And these FRWR-related fields: + * ia->ri_max_frwr_depth + * ia->ri_mrtype + */ static int frwr_op_open(struct rpcrdma_ia *ia, struct rpcrdma_ep *ep, struct rpcrdma_create_data_internal *cdata) { struct ib_device_attr *attrs = &ia->ri_device->attrs; - int depth, delta; + int max_qp_wr, depth, delta; ia->ri_mrtype = IB_MR_TYPE_MEM_REG; if (attrs->device_cap_flags & IB_DEVICE_SG_GAPS_REG) @@ -243,14 +253,26 @@ frwr_op_open(struct rpcrdma_ia *ia, struct rpcrdma_ep *ep, } while (delta > 0); } - ep->rep_attr.cap.max_send_wr *= depth; - if (ep->rep_attr.cap.max_send_wr > attrs->max_qp_wr) { - cdata->max_requests = attrs->max_qp_wr / depth; + max_qp_wr = ia->ri_device->attrs.max_qp_wr; + max_qp_wr -= RPCRDMA_BACKWARD_WRS; + max_qp_wr -= 1; + if (max_qp_wr < RPCRDMA_MIN_SLOT_TABLE) + return -ENOMEM; + if (cdata->max_requests > max_qp_wr) + cdata->max_requests = max_qp_wr; + ep->rep_attr.cap.max_send_wr = cdata->max_requests * depth; + if (ep->rep_attr.cap.max_send_wr > max_qp_wr) { + cdata->max_requests = max_qp_wr / depth; if (!cdata->max_requests) return -EINVAL; ep->rep_attr.cap.max_send_wr = cdata->max_requests * depth; } + ep->rep_attr.cap.max_send_wr += RPCRDMA_BACKWARD_WRS; + ep->rep_attr.cap.max_send_wr += 1; /* for ib_drain_sq */ + ep->rep_attr.cap.max_recv_wr = cdata->max_requests; + ep->rep_attr.cap.max_recv_wr += RPCRDMA_BACKWARD_WRS; + ep->rep_attr.cap.max_recv_wr += 1; /* for ib_drain_rq */ ia->ri_max_segs = max_t(unsigned int, 1, RPCRDMA_MAX_DATA_SEGS / ia->ri_max_frwr_depth); @@ -395,6 +417,7 @@ frwr_op_map(struct rpcrdma_xprt *r_xprt, struct rpcrdma_mr_seg *seg, mr->mr_nents = ib_dma_map_sg(ia->ri_device, mr->mr_sg, i, mr->mr_dir); if (!mr->mr_nents) goto out_dmamap_err; + trace_xprtrdma_dma_map(mr); ibmr = frwr->fr_mr; n = ib_map_mr_sg(ibmr, mr->mr_sg, mr->mr_nents, NULL, PAGE_SIZE); diff --git a/net/sunrpc/xprtrdma/module.c b/net/sunrpc/xprtrdma/module.c index d95ac0736b7f..620327c01302 100644 --- a/net/sunrpc/xprtrdma/module.c +++ b/net/sunrpc/xprtrdma/module.c @@ -1,3 +1,4 @@ +// SPDX-License-Identifier: GPL-2.0 OR BSD-3-Clause /* * Copyright (c) 2015, 2017 Oracle. All rights reserved. */ diff --git a/net/sunrpc/xprtrdma/rpc_rdma.c b/net/sunrpc/xprtrdma/rpc_rdma.c index b942d7e0aef5..c8ae983c6cc0 100644 --- a/net/sunrpc/xprtrdma/rpc_rdma.c +++ b/net/sunrpc/xprtrdma/rpc_rdma.c @@ -1,3 +1,4 @@ +// SPDX-License-Identifier: GPL-2.0 OR BSD-3-Clause /* * Copyright (c) 2014-2017 Oracle. All rights reserved. * Copyright (c) 2003-2007 Network Appliance, Inc. All rights reserved. @@ -57,14 +58,6 @@ # define RPCDBG_FACILITY RPCDBG_TRANS #endif -static const char transfertypes[][12] = { - "inline", /* no chunks */ - "read list", /* some argument via rdma read */ - "*read list", /* entire request via rdma read */ - "write list", /* some result via rdma write */ - "reply chunk" /* entire reply via rdma write */ -}; - /* Returns size of largest RPC-over-RDMA header in a Call message * * The largest Call header contains a full-size Read list and a @@ -233,7 +226,7 @@ rpcrdma_convert_iovs(struct rpcrdma_xprt *r_xprt, struct xdr_buf *xdrbuf, */ *ppages = alloc_page(GFP_ATOMIC); if (!*ppages) - return -EAGAIN; + return -ENOBUFS; } seg->mr_page = *ppages; seg->mr_offset = (char *)page_base; @@ -368,7 +361,7 @@ rpcrdma_encode_read_list(struct rpcrdma_xprt *r_xprt, struct rpcrdma_req *req, seg = r_xprt->rx_ia.ri_ops->ro_map(r_xprt, seg, nsegs, false, &mr); if (IS_ERR(seg)) - goto out_maperr; + return PTR_ERR(seg); rpcrdma_mr_push(mr, &req->rl_registered); if (encode_read_segment(xdr, mr, pos) < 0) @@ -380,11 +373,6 @@ rpcrdma_encode_read_list(struct rpcrdma_xprt *r_xprt, struct rpcrdma_req *req, } while (nsegs); return 0; - -out_maperr: - if (PTR_ERR(seg) == -EAGAIN) - xprt_wait_for_buffer_space(rqst->rq_task, NULL); - return PTR_ERR(seg); } /* Register and XDR encode the Write list. Supports encoding a list @@ -431,7 +419,7 @@ rpcrdma_encode_write_list(struct rpcrdma_xprt *r_xprt, struct rpcrdma_req *req, seg = r_xprt->rx_ia.ri_ops->ro_map(r_xprt, seg, nsegs, true, &mr); if (IS_ERR(seg)) - goto out_maperr; + return PTR_ERR(seg); rpcrdma_mr_push(mr, &req->rl_registered); if (encode_rdma_segment(xdr, mr) < 0) @@ -448,11 +436,6 @@ rpcrdma_encode_write_list(struct rpcrdma_xprt *r_xprt, struct rpcrdma_req *req, *segcount = cpu_to_be32(nchunks); return 0; - -out_maperr: - if (PTR_ERR(seg) == -EAGAIN) - xprt_wait_for_buffer_space(rqst->rq_task, NULL); - return PTR_ERR(seg); } /* Register and XDR encode the Reply chunk. Supports encoding an array @@ -494,7 +477,7 @@ rpcrdma_encode_reply_chunk(struct rpcrdma_xprt *r_xprt, struct rpcrdma_req *req, seg = r_xprt->rx_ia.ri_ops->ro_map(r_xprt, seg, nsegs, true, &mr); if (IS_ERR(seg)) - goto out_maperr; + return PTR_ERR(seg); rpcrdma_mr_push(mr, &req->rl_registered); if (encode_rdma_segment(xdr, mr) < 0) @@ -511,11 +494,6 @@ rpcrdma_encode_reply_chunk(struct rpcrdma_xprt *r_xprt, struct rpcrdma_req *req, *segcount = cpu_to_be32(nchunks); return 0; - -out_maperr: - if (PTR_ERR(seg) == -EAGAIN) - xprt_wait_for_buffer_space(rqst->rq_task, NULL); - return PTR_ERR(seg); } /** @@ -712,7 +690,7 @@ rpcrdma_prepare_send_sges(struct rpcrdma_xprt *r_xprt, { req->rl_sendctx = rpcrdma_sendctx_get_locked(&r_xprt->rx_buf); if (!req->rl_sendctx) - return -ENOBUFS; + return -EAGAIN; req->rl_sendctx->sc_wr.num_sge = 0; req->rl_sendctx->sc_unmap_count = 0; req->rl_sendctx->sc_req = req; @@ -886,7 +864,15 @@ rpcrdma_marshal_req(struct rpcrdma_xprt *r_xprt, struct rpc_rqst *rqst) return 0; out_err: - r_xprt->rx_stats.failed_marshal_count++; + switch (ret) { + case -EAGAIN: + xprt_wait_for_buffer_space(rqst->rq_task, NULL); + break; + case -ENOBUFS: + break; + default: + r_xprt->rx_stats.failed_marshal_count++; + } return ret; } @@ -1029,8 +1015,6 @@ rpcrdma_is_bcall(struct rpcrdma_xprt *r_xprt, struct rpcrdma_rep *rep) out_short: pr_warn("RPC/RDMA short backward direction call\n"); - if (rpcrdma_ep_post_recv(&r_xprt->rx_ia, rep)) - xprt_disconnect_done(&r_xprt->rx_xprt); return true; } #else /* CONFIG_SUNRPC_BACKCHANNEL */ @@ -1336,13 +1320,14 @@ void rpcrdma_reply_handler(struct rpcrdma_rep *rep) u32 credits; __be32 *p; + --buf->rb_posted_receives; + if (rep->rr_hdrbuf.head[0].iov_len == 0) goto out_badstatus; + /* Fixed transport header fields */ xdr_init_decode(&rep->rr_stream, &rep->rr_hdrbuf, rep->rr_hdrbuf.head[0].iov_base); - - /* Fixed transport header fields */ p = xdr_inline_decode(&rep->rr_stream, 4 * sizeof(*p)); if (unlikely(!p)) goto out_shortreply; @@ -1381,17 +1366,10 @@ void rpcrdma_reply_handler(struct rpcrdma_rep *rep) trace_xprtrdma_reply(rqst->rq_task, rep, req, credits); + rpcrdma_post_recvs(r_xprt, false); queue_work(rpcrdma_receive_wq, &rep->rr_work); return; -out_badstatus: - rpcrdma_recv_buffer_put(rep); - if (r_xprt->rx_ep.rep_connected == 1) { - r_xprt->rx_ep.rep_connected = -EIO; - rpcrdma_conn_func(&r_xprt->rx_ep); - } - return; - out_badversion: trace_xprtrdma_reply_vers(rep); goto repost; @@ -1411,7 +1389,7 @@ out_shortreply: * receive buffer before returning. */ repost: - r_xprt->rx_stats.bad_reply_count++; - if (rpcrdma_ep_post_recv(&r_xprt->rx_ia, rep)) - rpcrdma_recv_buffer_put(rep); + rpcrdma_post_recvs(r_xprt, false); +out_badstatus: + rpcrdma_recv_buffer_put(rep); } diff --git a/net/sunrpc/xprtrdma/svc_rdma_backchannel.c b/net/sunrpc/xprtrdma/svc_rdma_backchannel.c index 343e7add672c..a68180090554 100644 --- a/net/sunrpc/xprtrdma/svc_rdma_backchannel.c +++ b/net/sunrpc/xprtrdma/svc_rdma_backchannel.c @@ -263,6 +263,7 @@ static const struct rpc_xprt_ops xprt_rdma_bc_procs = { .reserve_xprt = xprt_reserve_xprt_cong, .release_xprt = xprt_release_xprt_cong, .alloc_slot = xprt_alloc_slot, + .free_slot = xprt_free_slot, .release_request = xprt_release_rqst_cong, .buf_alloc = xprt_rdma_bc_allocate, .buf_free = xprt_rdma_bc_free, diff --git a/net/sunrpc/xprtrdma/transport.c b/net/sunrpc/xprtrdma/transport.c index caca977e3755..143ce2579ba9 100644 --- a/net/sunrpc/xprtrdma/transport.c +++ b/net/sunrpc/xprtrdma/transport.c @@ -1,3 +1,4 @@ +// SPDX-License-Identifier: GPL-2.0 OR BSD-3-Clause /* * Copyright (c) 2014-2017 Oracle. All rights reserved. * Copyright (c) 2003-2007 Network Appliance, Inc. All rights reserved. @@ -334,9 +335,7 @@ xprt_setup_rdma(struct xprt_create *args) return ERR_PTR(-EBADF); } - xprt = xprt_alloc(args->net, sizeof(struct rpcrdma_xprt), - xprt_rdma_slot_table_entries, - xprt_rdma_slot_table_entries); + xprt = xprt_alloc(args->net, sizeof(struct rpcrdma_xprt), 0, 0); if (xprt == NULL) { dprintk("RPC: %s: couldn't allocate rpcrdma_xprt\n", __func__); @@ -368,7 +367,7 @@ xprt_setup_rdma(struct xprt_create *args) xprt_set_bound(xprt); xprt_rdma_format_addresses(xprt, sap); - cdata.max_requests = xprt->max_reqs; + cdata.max_requests = xprt_rdma_slot_table_entries; cdata.rsize = RPCRDMA_MAX_SEGS * PAGE_SIZE; /* RDMA write max */ cdata.wsize = RPCRDMA_MAX_SEGS * PAGE_SIZE; /* RDMA read max */ @@ -541,6 +540,47 @@ xprt_rdma_connect(struct rpc_xprt *xprt, struct rpc_task *task) } } +/** + * xprt_rdma_alloc_slot - allocate an rpc_rqst + * @xprt: controlling RPC transport + * @task: RPC task requesting a fresh rpc_rqst + * + * tk_status values: + * %0 if task->tk_rqstp points to a fresh rpc_rqst + * %-EAGAIN if no rpc_rqst is available; queued on backlog + */ +static void +xprt_rdma_alloc_slot(struct rpc_xprt *xprt, struct rpc_task *task) +{ + struct rpcrdma_xprt *r_xprt = rpcx_to_rdmax(xprt); + struct rpcrdma_req *req; + + req = rpcrdma_buffer_get(&r_xprt->rx_buf); + if (!req) + goto out_sleep; + task->tk_rqstp = &req->rl_slot; + task->tk_status = 0; + return; + +out_sleep: + rpc_sleep_on(&xprt->backlog, task, NULL); + task->tk_status = -EAGAIN; +} + +/** + * xprt_rdma_free_slot - release an rpc_rqst + * @xprt: controlling RPC transport + * @rqst: rpc_rqst to release + * + */ +static void +xprt_rdma_free_slot(struct rpc_xprt *xprt, struct rpc_rqst *rqst) +{ + memset(rqst, 0, sizeof(*rqst)); + rpcrdma_buffer_put(rpcr_to_rdmar(rqst)); + rpc_wake_up_next(&xprt->backlog); +} + static bool rpcrdma_get_sendbuf(struct rpcrdma_xprt *r_xprt, struct rpcrdma_req *req, size_t size, gfp_t flags) @@ -611,13 +651,9 @@ xprt_rdma_allocate(struct rpc_task *task) { struct rpc_rqst *rqst = task->tk_rqstp; struct rpcrdma_xprt *r_xprt = rpcx_to_rdmax(rqst->rq_xprt); - struct rpcrdma_req *req; + struct rpcrdma_req *req = rpcr_to_rdmar(rqst); gfp_t flags; - req = rpcrdma_buffer_get(&r_xprt->rx_buf); - if (req == NULL) - goto out_get; - flags = RPCRDMA_DEF_GFP; if (RPC_IS_SWAPPER(task)) flags = __GFP_MEMALLOC | GFP_NOWAIT | __GFP_NOWARN; @@ -627,15 +663,12 @@ xprt_rdma_allocate(struct rpc_task *task) if (!rpcrdma_get_recvbuf(r_xprt, req, rqst->rq_rcvsize, flags)) goto out_fail; - rpcrdma_set_xprtdata(rqst, req); rqst->rq_buffer = req->rl_sendbuf->rg_base; rqst->rq_rbuffer = req->rl_recvbuf->rg_base; trace_xprtrdma_allocate(task, req); return 0; out_fail: - rpcrdma_buffer_put(req); -out_get: trace_xprtrdma_allocate(task, NULL); return -ENOMEM; } @@ -656,7 +689,6 @@ xprt_rdma_free(struct rpc_task *task) if (test_bit(RPCRDMA_REQ_F_PENDING, &req->rl_flags)) rpcrdma_release_rqst(r_xprt, req); trace_xprtrdma_rpc_done(task, req); - rpcrdma_buffer_put(req); } /** @@ -694,9 +726,6 @@ xprt_rdma_send_request(struct rpc_task *task) if (rc < 0) goto failed_marshal; - if (req->rl_reply == NULL) /* e.g. reconnection */ - rpcrdma_recv_buffer_get(req); - /* Must suppress retransmit to maintain credits */ if (rqst->rq_connect_cookie == xprt->connect_cookie) goto drop_connection; @@ -783,7 +812,8 @@ xprt_rdma_disable_swap(struct rpc_xprt *xprt) static const struct rpc_xprt_ops xprt_rdma_procs = { .reserve_xprt = xprt_reserve_xprt_cong, .release_xprt = xprt_release_xprt_cong, /* sunrpc/xprt.c */ - .alloc_slot = xprt_alloc_slot, + .alloc_slot = xprt_rdma_alloc_slot, + .free_slot = xprt_rdma_free_slot, .release_request = xprt_release_rqst_cong, /* ditto */ .set_retrans_timeout = xprt_set_retrans_timeout_def, /* ditto */ .timer = xprt_rdma_timer, diff --git a/net/sunrpc/xprtrdma/verbs.c b/net/sunrpc/xprtrdma/verbs.c index 7f913ece5038..16161a36dc73 100644 --- a/net/sunrpc/xprtrdma/verbs.c +++ b/net/sunrpc/xprtrdma/verbs.c @@ -1,3 +1,4 @@ +// SPDX-License-Identifier: GPL-2.0 OR BSD-3-Clause /* * Copyright (c) 2014-2017 Oracle. All rights reserved. * Copyright (c) 2003-2007 Network Appliance, Inc. All rights reserved. @@ -72,8 +73,10 @@ /* * internal functions */ +static void rpcrdma_sendctx_put_locked(struct rpcrdma_sendctx *sc); static void rpcrdma_mrs_create(struct rpcrdma_xprt *r_xprt); static void rpcrdma_mrs_destroy(struct rpcrdma_buffer *buf); +static int rpcrdma_create_rep(struct rpcrdma_xprt *r_xprt, bool temp); static void rpcrdma_dma_unmap_regbuf(struct rpcrdma_regbuf *rb); struct workqueue_struct *rpcrdma_receive_wq __read_mostly; @@ -160,7 +163,7 @@ rpcrdma_wc_receive(struct ib_cq *cq, struct ib_wc *wc) rr_cqe); /* WARNING: Only wr_id and status are reliable at this point */ - trace_xprtrdma_wc_receive(rep, wc); + trace_xprtrdma_wc_receive(wc); if (wc->status != IB_WC_SUCCESS) goto out_fail; @@ -232,7 +235,7 @@ rpcrdma_conn_upcall(struct rdma_cm_id *id, struct rdma_cm_event *event) complete(&ia->ri_done); break; case RDMA_CM_EVENT_ADDR_ERROR: - ia->ri_async_rc = -EHOSTUNREACH; + ia->ri_async_rc = -EPROTO; complete(&ia->ri_done); break; case RDMA_CM_EVENT_ROUTE_ERROR: @@ -263,7 +266,7 @@ rpcrdma_conn_upcall(struct rdma_cm_id *id, struct rdma_cm_event *event) connstate = -ENOTCONN; goto connected; case RDMA_CM_EVENT_UNREACHABLE: - connstate = -ENETDOWN; + connstate = -ENETUNREACH; goto connected; case RDMA_CM_EVENT_REJECTED: dprintk("rpcrdma: connection to %s:%s rejected: %s\n", @@ -306,8 +309,8 @@ rpcrdma_create_id(struct rpcrdma_xprt *xprt, struct rpcrdma_ia *ia) init_completion(&ia->ri_done); init_completion(&ia->ri_remove_done); - id = rdma_create_id(&init_net, rpcrdma_conn_upcall, xprt, RDMA_PS_TCP, - IB_QPT_RC); + id = rdma_create_id(xprt->rx_xprt.xprt_net, rpcrdma_conn_upcall, + xprt, RDMA_PS_TCP, IB_QPT_RC); if (IS_ERR(id)) { rc = PTR_ERR(id); dprintk("RPC: %s: rdma_create_id() failed %i\n", @@ -501,8 +504,8 @@ rpcrdma_ep_create(struct rpcrdma_ep *ep, struct rpcrdma_ia *ia, struct rpcrdma_create_data_internal *cdata) { struct rpcrdma_connect_private *pmsg = &ep->rep_cm_private; - unsigned int max_qp_wr, max_sge; struct ib_cq *sendcq, *recvcq; + unsigned int max_sge; int rc; max_sge = min_t(unsigned int, ia->ri_device->attrs.max_sge, @@ -513,29 +516,13 @@ rpcrdma_ep_create(struct rpcrdma_ep *ep, struct rpcrdma_ia *ia, } ia->ri_max_send_sges = max_sge; - if (ia->ri_device->attrs.max_qp_wr <= RPCRDMA_BACKWARD_WRS) { - dprintk("RPC: %s: insufficient wqe's available\n", - __func__); - return -ENOMEM; - } - max_qp_wr = ia->ri_device->attrs.max_qp_wr - RPCRDMA_BACKWARD_WRS - 1; - - /* check provider's send/recv wr limits */ - if (cdata->max_requests > max_qp_wr) - cdata->max_requests = max_qp_wr; + rc = ia->ri_ops->ro_open(ia, ep, cdata); + if (rc) + return rc; ep->rep_attr.event_handler = rpcrdma_qp_async_error_upcall; ep->rep_attr.qp_context = ep; ep->rep_attr.srq = NULL; - ep->rep_attr.cap.max_send_wr = cdata->max_requests; - ep->rep_attr.cap.max_send_wr += RPCRDMA_BACKWARD_WRS; - ep->rep_attr.cap.max_send_wr += 1; /* drain cqe */ - rc = ia->ri_ops->ro_open(ia, ep, cdata); - if (rc) - return rc; - ep->rep_attr.cap.max_recv_wr = cdata->max_requests; - ep->rep_attr.cap.max_recv_wr += RPCRDMA_BACKWARD_WRS; - ep->rep_attr.cap.max_recv_wr += 1; /* drain cqe */ ep->rep_attr.cap.max_send_sge = max_sge; ep->rep_attr.cap.max_recv_sge = 1; ep->rep_attr.cap.max_inline_data = 0; @@ -742,7 +729,6 @@ rpcrdma_ep_connect(struct rpcrdma_ep *ep, struct rpcrdma_ia *ia) { struct rpcrdma_xprt *r_xprt = container_of(ia, struct rpcrdma_xprt, rx_ia); - unsigned int extras; int rc; retry: @@ -786,9 +772,8 @@ retry: } dprintk("RPC: %s: connected\n", __func__); - extras = r_xprt->rx_buf.rb_bc_srv_max_requests; - if (extras) - rpcrdma_ep_post_extra_recv(r_xprt, extras); + + rpcrdma_post_recvs(r_xprt, true); out: if (rc) @@ -894,6 +879,7 @@ static int rpcrdma_sendctxs_create(struct rpcrdma_xprt *r_xprt) sc->sc_xprt = r_xprt; buf->rb_sc_ctxs[i] = sc; } + buf->rb_flags = 0; return 0; @@ -951,7 +937,7 @@ out_emptyq: * completions recently. This is a sign the Send Queue is * backing up. Cause the caller to pause and try again. */ - dprintk("RPC: %s: empty sendctx queue\n", __func__); + set_bit(RPCRDMA_BUF_F_EMPTY_SCQ, &buf->rb_flags); r_xprt = container_of(buf, struct rpcrdma_xprt, rx_buf); r_xprt->rx_stats.empty_sendctx_q++; return NULL; @@ -966,7 +952,8 @@ out_emptyq: * * The caller serializes calls to this function (per rpcrdma_buffer). */ -void rpcrdma_sendctx_put_locked(struct rpcrdma_sendctx *sc) +static void +rpcrdma_sendctx_put_locked(struct rpcrdma_sendctx *sc) { struct rpcrdma_buffer *buf = &sc->sc_xprt->rx_buf; unsigned long next_tail; @@ -985,6 +972,11 @@ void rpcrdma_sendctx_put_locked(struct rpcrdma_sendctx *sc) /* Paired with READ_ONCE */ smp_store_release(&buf->rb_sc_tail, next_tail); + + if (test_and_clear_bit(RPCRDMA_BUF_F_EMPTY_SCQ, &buf->rb_flags)) { + smp_mb__after_atomic(); + xprt_write_space(&sc->sc_xprt->rx_xprt); + } } static void @@ -1098,14 +1090,8 @@ rpcrdma_create_req(struct rpcrdma_xprt *r_xprt) return req; } -/** - * rpcrdma_create_rep - Allocate an rpcrdma_rep object - * @r_xprt: controlling transport - * - * Returns 0 on success or a negative errno on failure. - */ -int -rpcrdma_create_rep(struct rpcrdma_xprt *r_xprt) +static int +rpcrdma_create_rep(struct rpcrdma_xprt *r_xprt, bool temp) { struct rpcrdma_create_data_internal *cdata = &r_xprt->rx_data; struct rpcrdma_buffer *buf = &r_xprt->rx_buf; @@ -1133,6 +1119,7 @@ rpcrdma_create_rep(struct rpcrdma_xprt *r_xprt) rep->rr_recv_wr.wr_cqe = &rep->rr_cqe; rep->rr_recv_wr.sg_list = &rep->rr_rdmabuf->rg_iov; rep->rr_recv_wr.num_sge = 1; + rep->rr_temp = temp; spin_lock(&buf->rb_lock); list_add(&rep->rr_list, &buf->rb_recv_bufs); @@ -1184,12 +1171,8 @@ rpcrdma_buffer_create(struct rpcrdma_xprt *r_xprt) list_add(&req->rl_list, &buf->rb_send_bufs); } + buf->rb_posted_receives = 0; INIT_LIST_HEAD(&buf->rb_recv_bufs); - for (i = 0; i <= buf->rb_max_requests; i++) { - rc = rpcrdma_create_rep(r_xprt); - if (rc) - goto out; - } rc = rpcrdma_sendctxs_create(r_xprt); if (rc) @@ -1201,28 +1184,6 @@ out: return rc; } -static struct rpcrdma_req * -rpcrdma_buffer_get_req_locked(struct rpcrdma_buffer *buf) -{ - struct rpcrdma_req *req; - - req = list_first_entry(&buf->rb_send_bufs, - struct rpcrdma_req, rl_list); - list_del_init(&req->rl_list); - return req; -} - -static struct rpcrdma_rep * -rpcrdma_buffer_get_rep_locked(struct rpcrdma_buffer *buf) -{ - struct rpcrdma_rep *rep; - - rep = list_first_entry(&buf->rb_recv_bufs, - struct rpcrdma_rep, rr_list); - list_del(&rep->rr_list); - return rep; -} - static void rpcrdma_destroy_rep(struct rpcrdma_rep *rep) { @@ -1281,10 +1242,11 @@ rpcrdma_buffer_destroy(struct rpcrdma_buffer *buf) while (!list_empty(&buf->rb_recv_bufs)) { struct rpcrdma_rep *rep; - rep = rpcrdma_buffer_get_rep_locked(buf); + rep = list_first_entry(&buf->rb_recv_bufs, + struct rpcrdma_rep, rr_list); + list_del(&rep->rr_list); rpcrdma_destroy_rep(rep); } - buf->rb_send_count = 0; spin_lock(&buf->rb_reqslock); while (!list_empty(&buf->rb_allreqs)) { @@ -1299,7 +1261,6 @@ rpcrdma_buffer_destroy(struct rpcrdma_buffer *buf) spin_lock(&buf->rb_reqslock); } spin_unlock(&buf->rb_reqslock); - buf->rb_recv_count = 0; rpcrdma_mrs_destroy(buf); } @@ -1372,27 +1333,11 @@ rpcrdma_mr_unmap_and_put(struct rpcrdma_mr *mr) __rpcrdma_mr_put(&r_xprt->rx_buf, mr); } -static struct rpcrdma_rep * -rpcrdma_buffer_get_rep(struct rpcrdma_buffer *buffers) -{ - /* If an RPC previously completed without a reply (say, a - * credential problem or a soft timeout occurs) then hold off - * on supplying more Receive buffers until the number of new - * pending RPCs catches up to the number of posted Receives. - */ - if (unlikely(buffers->rb_send_count < buffers->rb_recv_count)) - return NULL; - - if (unlikely(list_empty(&buffers->rb_recv_bufs))) - return NULL; - buffers->rb_recv_count++; - return rpcrdma_buffer_get_rep_locked(buffers); -} - -/* - * Get a set of request/reply buffers. +/** + * rpcrdma_buffer_get - Get a request buffer + * @buffers: Buffer pool from which to obtain a buffer * - * Reply buffer (if available) is attached to send buffer upon return. + * Returns a fresh rpcrdma_req, or NULL if none are available. */ struct rpcrdma_req * rpcrdma_buffer_get(struct rpcrdma_buffer *buffers) @@ -1400,23 +1345,18 @@ rpcrdma_buffer_get(struct rpcrdma_buffer *buffers) struct rpcrdma_req *req; spin_lock(&buffers->rb_lock); - if (list_empty(&buffers->rb_send_bufs)) - goto out_reqbuf; - buffers->rb_send_count++; - req = rpcrdma_buffer_get_req_locked(buffers); - req->rl_reply = rpcrdma_buffer_get_rep(buffers); + req = list_first_entry_or_null(&buffers->rb_send_bufs, + struct rpcrdma_req, rl_list); + if (req) + list_del_init(&req->rl_list); spin_unlock(&buffers->rb_lock); - return req; - -out_reqbuf: - spin_unlock(&buffers->rb_lock); - return NULL; } -/* - * Put request/reply buffers back into pool. - * Pre-decrement counter/array index. +/** + * rpcrdma_buffer_put - Put request/reply buffers back into pool + * @req: object to return + * */ void rpcrdma_buffer_put(struct rpcrdma_req *req) @@ -1427,27 +1367,16 @@ rpcrdma_buffer_put(struct rpcrdma_req *req) req->rl_reply = NULL; spin_lock(&buffers->rb_lock); - buffers->rb_send_count--; - list_add_tail(&req->rl_list, &buffers->rb_send_bufs); + list_add(&req->rl_list, &buffers->rb_send_bufs); if (rep) { - buffers->rb_recv_count--; - list_add_tail(&rep->rr_list, &buffers->rb_recv_bufs); + if (!rep->rr_temp) { + list_add(&rep->rr_list, &buffers->rb_recv_bufs); + rep = NULL; + } } spin_unlock(&buffers->rb_lock); -} - -/* - * Recover reply buffers from pool. - * This happens when recovering from disconnect. - */ -void -rpcrdma_recv_buffer_get(struct rpcrdma_req *req) -{ - struct rpcrdma_buffer *buffers = req->rl_buffer; - - spin_lock(&buffers->rb_lock); - req->rl_reply = rpcrdma_buffer_get_rep(buffers); - spin_unlock(&buffers->rb_lock); + if (rep) + rpcrdma_destroy_rep(rep); } /* @@ -1459,10 +1388,13 @@ rpcrdma_recv_buffer_put(struct rpcrdma_rep *rep) { struct rpcrdma_buffer *buffers = &rep->rr_rxprt->rx_buf; - spin_lock(&buffers->rb_lock); - buffers->rb_recv_count--; - list_add_tail(&rep->rr_list, &buffers->rb_recv_bufs); - spin_unlock(&buffers->rb_lock); + if (!rep->rr_temp) { + spin_lock(&buffers->rb_lock); + list_add(&rep->rr_list, &buffers->rb_recv_bufs); + spin_unlock(&buffers->rb_lock); + } else { + rpcrdma_destroy_rep(rep); + } } /** @@ -1558,13 +1490,6 @@ rpcrdma_ep_post(struct rpcrdma_ia *ia, struct ib_send_wr *send_wr = &req->rl_sendctx->sc_wr; int rc; - if (req->rl_reply) { - rc = rpcrdma_ep_post_recv(ia, req->rl_reply); - if (rc) - return rc; - req->rl_reply = NULL; - } - if (!ep->rep_send_count || test_bit(RPCRDMA_REQ_F_TX_RESOURCES, &req->rl_flags)) { send_wr->send_flags |= IB_SEND_SIGNALED; @@ -1581,61 +1506,69 @@ rpcrdma_ep_post(struct rpcrdma_ia *ia, return 0; } -int -rpcrdma_ep_post_recv(struct rpcrdma_ia *ia, - struct rpcrdma_rep *rep) -{ - struct ib_recv_wr *recv_wr_fail; - int rc; - - if (!rpcrdma_dma_map_regbuf(ia, rep->rr_rdmabuf)) - goto out_map; - rc = ib_post_recv(ia->ri_id->qp, &rep->rr_recv_wr, &recv_wr_fail); - trace_xprtrdma_post_recv(rep, rc); - if (rc) - return -ENOTCONN; - return 0; - -out_map: - pr_err("rpcrdma: failed to DMA map the Receive buffer\n"); - return -EIO; -} - /** - * rpcrdma_ep_post_extra_recv - Post buffers for incoming backchannel requests - * @r_xprt: transport associated with these backchannel resources - * @count: minimum number of incoming requests expected + * rpcrdma_post_recvs - Maybe post some Receive buffers + * @r_xprt: controlling transport + * @temp: when true, allocate temp rpcrdma_rep objects * - * Returns zero if all requested buffers were posted, or a negative errno. */ -int -rpcrdma_ep_post_extra_recv(struct rpcrdma_xprt *r_xprt, unsigned int count) +void +rpcrdma_post_recvs(struct rpcrdma_xprt *r_xprt, bool temp) { - struct rpcrdma_buffer *buffers = &r_xprt->rx_buf; - struct rpcrdma_ia *ia = &r_xprt->rx_ia; - struct rpcrdma_rep *rep; - int rc; + struct rpcrdma_buffer *buf = &r_xprt->rx_buf; + struct ib_recv_wr *wr, *bad_wr; + int needed, count, rc; - while (count--) { - spin_lock(&buffers->rb_lock); - if (list_empty(&buffers->rb_recv_bufs)) - goto out_reqbuf; - rep = rpcrdma_buffer_get_rep_locked(buffers); - spin_unlock(&buffers->rb_lock); + needed = buf->rb_credits + (buf->rb_bc_srv_max_requests << 1); + if (buf->rb_posted_receives > needed) + return; + needed -= buf->rb_posted_receives; - rc = rpcrdma_ep_post_recv(ia, rep); - if (rc) - goto out_rc; - } + count = 0; + wr = NULL; + while (needed) { + struct rpcrdma_regbuf *rb; + struct rpcrdma_rep *rep; - return 0; + spin_lock(&buf->rb_lock); + rep = list_first_entry_or_null(&buf->rb_recv_bufs, + struct rpcrdma_rep, rr_list); + if (likely(rep)) + list_del(&rep->rr_list); + spin_unlock(&buf->rb_lock); + if (!rep) { + if (rpcrdma_create_rep(r_xprt, temp)) + break; + continue; + } -out_reqbuf: - spin_unlock(&buffers->rb_lock); - trace_xprtrdma_noreps(r_xprt); - return -ENOMEM; + rb = rep->rr_rdmabuf; + if (!rpcrdma_regbuf_is_mapped(rb)) { + if (!__rpcrdma_dma_map_regbuf(&r_xprt->rx_ia, rb)) { + rpcrdma_recv_buffer_put(rep); + break; + } + } -out_rc: - rpcrdma_recv_buffer_put(rep); - return rc; + trace_xprtrdma_post_recv(rep->rr_recv_wr.wr_cqe); + rep->rr_recv_wr.next = wr; + wr = &rep->rr_recv_wr; + ++count; + --needed; + } + if (!count) + return; + + rc = ib_post_recv(r_xprt->rx_ia.ri_id->qp, wr, &bad_wr); + if (rc) { + for (wr = bad_wr; wr; wr = wr->next) { + struct rpcrdma_rep *rep; + + rep = container_of(wr, struct rpcrdma_rep, rr_recv_wr); + rpcrdma_recv_buffer_put(rep); + --count; + } + } + buf->rb_posted_receives += count; + trace_xprtrdma_post_recvs(r_xprt, count, rc); } diff --git a/net/sunrpc/xprtrdma/xprt_rdma.h b/net/sunrpc/xprtrdma/xprt_rdma.h index f845b71793e2..2ca14f7c2d51 100644 --- a/net/sunrpc/xprtrdma/xprt_rdma.h +++ b/net/sunrpc/xprtrdma/xprt_rdma.h @@ -1,3 +1,4 @@ +/* SPDX-License-Identifier: GPL-2.0 OR BSD-3-Clause */ /* * Copyright (c) 2014-2017 Oracle. All rights reserved. * Copyright (c) 2003-2007 Network Appliance, Inc. All rights reserved. @@ -196,6 +197,7 @@ struct rpcrdma_rep { __be32 rr_proc; int rr_wc_flags; u32 rr_inv_rkey; + bool rr_temp; struct rpcrdma_regbuf *rr_rdmabuf; struct rpcrdma_xprt *rr_rxprt; struct work_struct rr_work; @@ -334,6 +336,7 @@ enum { struct rpcrdma_buffer; struct rpcrdma_req { struct list_head rl_list; + struct rpc_rqst rl_slot; struct rpcrdma_buffer *rl_buffer; struct rpcrdma_rep *rl_reply; struct xdr_stream rl_stream; @@ -356,16 +359,10 @@ enum { RPCRDMA_REQ_F_TX_RESOURCES, }; -static inline void -rpcrdma_set_xprtdata(struct rpc_rqst *rqst, struct rpcrdma_req *req) -{ - rqst->rq_xprtdata = req; -} - static inline struct rpcrdma_req * rpcr_to_rdmar(const struct rpc_rqst *rqst) { - return rqst->rq_xprtdata; + return container_of(rqst, struct rpcrdma_req, rl_slot); } static inline void @@ -401,11 +398,12 @@ struct rpcrdma_buffer { struct rpcrdma_sendctx **rb_sc_ctxs; spinlock_t rb_lock; /* protect buf lists */ - int rb_send_count, rb_recv_count; struct list_head rb_send_bufs; struct list_head rb_recv_bufs; + unsigned long rb_flags; u32 rb_max_requests; u32 rb_credits; /* most recent credit grant */ + int rb_posted_receives; u32 rb_bc_srv_max_requests; spinlock_t rb_reqslock; /* protect rb_allreqs */ @@ -420,6 +418,11 @@ struct rpcrdma_buffer { }; #define rdmab_to_ia(b) (&container_of((b), struct rpcrdma_xprt, rx_buf)->rx_ia) +/* rb_flags */ +enum { + RPCRDMA_BUF_F_EMPTY_SCQ = 0, +}; + /* * Internal structure for transport instance creation. This * exists primarily for modularity. @@ -561,18 +564,16 @@ void rpcrdma_ep_disconnect(struct rpcrdma_ep *, struct rpcrdma_ia *); int rpcrdma_ep_post(struct rpcrdma_ia *, struct rpcrdma_ep *, struct rpcrdma_req *); -int rpcrdma_ep_post_recv(struct rpcrdma_ia *, struct rpcrdma_rep *); +void rpcrdma_post_recvs(struct rpcrdma_xprt *r_xprt, bool temp); /* * Buffer calls - xprtrdma/verbs.c */ struct rpcrdma_req *rpcrdma_create_req(struct rpcrdma_xprt *); void rpcrdma_destroy_req(struct rpcrdma_req *); -int rpcrdma_create_rep(struct rpcrdma_xprt *r_xprt); int rpcrdma_buffer_create(struct rpcrdma_xprt *); void rpcrdma_buffer_destroy(struct rpcrdma_buffer *); struct rpcrdma_sendctx *rpcrdma_sendctx_get_locked(struct rpcrdma_buffer *buf); -void rpcrdma_sendctx_put_locked(struct rpcrdma_sendctx *sc); struct rpcrdma_mr *rpcrdma_mr_get(struct rpcrdma_xprt *r_xprt); void rpcrdma_mr_put(struct rpcrdma_mr *mr); @@ -581,7 +582,6 @@ void rpcrdma_mr_defer_recovery(struct rpcrdma_mr *mr); struct rpcrdma_req *rpcrdma_buffer_get(struct rpcrdma_buffer *); void rpcrdma_buffer_put(struct rpcrdma_req *); -void rpcrdma_recv_buffer_get(struct rpcrdma_req *); void rpcrdma_recv_buffer_put(struct rpcrdma_rep *); struct rpcrdma_regbuf *rpcrdma_alloc_regbuf(size_t, enum dma_data_direction, @@ -603,8 +603,6 @@ rpcrdma_dma_map_regbuf(struct rpcrdma_ia *ia, struct rpcrdma_regbuf *rb) return __rpcrdma_dma_map_regbuf(ia, rb); } -int rpcrdma_ep_post_extra_recv(struct rpcrdma_xprt *, unsigned int); - int rpcrdma_alloc_wq(void); void rpcrdma_destroy_wq(void); diff --git a/net/sunrpc/xprtsock.c b/net/sunrpc/xprtsock.c index c8902f11efdd..9e1c5024aba9 100644 --- a/net/sunrpc/xprtsock.c +++ b/net/sunrpc/xprtsock.c @@ -2763,6 +2763,7 @@ static const struct rpc_xprt_ops xs_local_ops = { .reserve_xprt = xprt_reserve_xprt, .release_xprt = xs_tcp_release_xprt, .alloc_slot = xprt_alloc_slot, + .free_slot = xprt_free_slot, .rpcbind = xs_local_rpcbind, .set_port = xs_local_set_port, .connect = xs_local_connect, @@ -2782,6 +2783,7 @@ static const struct rpc_xprt_ops xs_udp_ops = { .reserve_xprt = xprt_reserve_xprt_cong, .release_xprt = xprt_release_xprt_cong, .alloc_slot = xprt_alloc_slot, + .free_slot = xprt_free_slot, .rpcbind = rpcb_getport_async, .set_port = xs_set_port, .connect = xs_connect, @@ -2803,6 +2805,7 @@ static const struct rpc_xprt_ops xs_tcp_ops = { .reserve_xprt = xprt_reserve_xprt, .release_xprt = xs_tcp_release_xprt, .alloc_slot = xprt_lock_and_alloc_slot, + .free_slot = xprt_free_slot, .rpcbind = rpcb_getport_async, .set_port = xs_set_port, .connect = xs_connect, @@ -2834,6 +2837,7 @@ static const struct rpc_xprt_ops bc_tcp_ops = { .reserve_xprt = xprt_reserve_xprt, .release_xprt = xprt_release_xprt, .alloc_slot = xprt_alloc_slot, + .free_slot = xprt_free_slot, .buf_alloc = bc_malloc, .buf_free = bc_free, .send_request = bc_send_request, |