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-rw-r--r--fs/nfsd/nfs4state.c58
1 files changed, 36 insertions, 22 deletions
diff --git a/fs/nfsd/nfs4state.c b/fs/nfsd/nfs4state.c
index af88d1d7ccae..f318e706cb35 100644
--- a/fs/nfsd/nfs4state.c
+++ b/fs/nfsd/nfs4state.c
@@ -1009,16 +1009,20 @@ static void nfs4_put_stateowner(struct nfs4_stateowner *sop)
nfs4_free_stateowner(sop);
}
-static void unhash_ol_stateid(struct nfs4_ol_stateid *stp)
+static bool unhash_ol_stateid(struct nfs4_ol_stateid *stp)
{
struct nfs4_file *fp = stp->st_stid.sc_file;
lockdep_assert_held(&stp->st_stateowner->so_client->cl_lock);
+ if (list_empty(&stp->st_perfile))
+ return false;
+
spin_lock(&fp->fi_lock);
- list_del(&stp->st_perfile);
+ list_del_init(&stp->st_perfile);
spin_unlock(&fp->fi_lock);
list_del(&stp->st_perstateowner);
+ return true;
}
static void nfs4_free_ol_stateid(struct nfs4_stid *stid)
@@ -1068,25 +1072,27 @@ static void put_ol_stateid_locked(struct nfs4_ol_stateid *stp,
list_add(&stp->st_locks, reaplist);
}
-static void unhash_lock_stateid(struct nfs4_ol_stateid *stp)
+static bool unhash_lock_stateid(struct nfs4_ol_stateid *stp)
{
struct nfs4_openowner *oo = openowner(stp->st_openstp->st_stateowner);
lockdep_assert_held(&oo->oo_owner.so_client->cl_lock);
list_del_init(&stp->st_locks);
- unhash_ol_stateid(stp);
nfs4_unhash_stid(&stp->st_stid);
+ return unhash_ol_stateid(stp);
}
static void release_lock_stateid(struct nfs4_ol_stateid *stp)
{
struct nfs4_openowner *oo = openowner(stp->st_openstp->st_stateowner);
+ bool unhashed;
spin_lock(&oo->oo_owner.so_client->cl_lock);
- unhash_lock_stateid(stp);
+ unhashed = unhash_lock_stateid(stp);
spin_unlock(&oo->oo_owner.so_client->cl_lock);
- nfs4_put_stid(&stp->st_stid);
+ if (unhashed)
+ nfs4_put_stid(&stp->st_stid);
}
static void unhash_lockowner_locked(struct nfs4_lockowner *lo)
@@ -1134,7 +1140,7 @@ static void release_lockowner(struct nfs4_lockowner *lo)
while (!list_empty(&lo->lo_owner.so_stateids)) {
stp = list_first_entry(&lo->lo_owner.so_stateids,
struct nfs4_ol_stateid, st_perstateowner);
- unhash_lock_stateid(stp);
+ WARN_ON(!unhash_lock_stateid(stp));
put_ol_stateid_locked(stp, &reaplist);
}
spin_unlock(&clp->cl_lock);
@@ -1147,21 +1153,26 @@ static void release_open_stateid_locks(struct nfs4_ol_stateid *open_stp,
{
struct nfs4_ol_stateid *stp;
+ lockdep_assert_held(&open_stp->st_stid.sc_client->cl_lock);
+
while (!list_empty(&open_stp->st_locks)) {
stp = list_entry(open_stp->st_locks.next,
struct nfs4_ol_stateid, st_locks);
- unhash_lock_stateid(stp);
+ WARN_ON(!unhash_lock_stateid(stp));
put_ol_stateid_locked(stp, reaplist);
}
}
-static void unhash_open_stateid(struct nfs4_ol_stateid *stp,
+static bool unhash_open_stateid(struct nfs4_ol_stateid *stp,
struct list_head *reaplist)
{
+ bool unhashed;
+
lockdep_assert_held(&stp->st_stid.sc_client->cl_lock);
- unhash_ol_stateid(stp);
+ unhashed = unhash_ol_stateid(stp);
release_open_stateid_locks(stp, reaplist);
+ return unhashed;
}
static void release_open_stateid(struct nfs4_ol_stateid *stp)
@@ -1169,8 +1180,8 @@ static void release_open_stateid(struct nfs4_ol_stateid *stp)
LIST_HEAD(reaplist);
spin_lock(&stp->st_stid.sc_client->cl_lock);
- unhash_open_stateid(stp, &reaplist);
- put_ol_stateid_locked(stp, &reaplist);
+ if (unhash_open_stateid(stp, &reaplist))
+ put_ol_stateid_locked(stp, &reaplist);
spin_unlock(&stp->st_stid.sc_client->cl_lock);
free_ol_stateid_reaplist(&reaplist);
}
@@ -1215,8 +1226,8 @@ static void release_openowner(struct nfs4_openowner *oo)
while (!list_empty(&oo->oo_owner.so_stateids)) {
stp = list_first_entry(&oo->oo_owner.so_stateids,
struct nfs4_ol_stateid, st_perstateowner);
- unhash_open_stateid(stp, &reaplist);
- put_ol_stateid_locked(stp, &reaplist);
+ if (unhash_open_stateid(stp, &reaplist))
+ put_ol_stateid_locked(stp, &reaplist);
}
spin_unlock(&clp->cl_lock);
free_ol_stateid_reaplist(&reaplist);
@@ -4752,7 +4763,7 @@ nfsd4_free_stateid(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
if (check_for_locks(stp->st_stid.sc_file,
lockowner(stp->st_stateowner)))
break;
- unhash_lock_stateid(stp);
+ WARN_ON(!unhash_lock_stateid(stp));
spin_unlock(&cl->cl_lock);
nfs4_put_stid(s);
ret = nfs_ok;
@@ -4968,20 +4979,23 @@ out:
static void nfsd4_close_open_stateid(struct nfs4_ol_stateid *s)
{
struct nfs4_client *clp = s->st_stid.sc_client;
+ bool unhashed;
LIST_HEAD(reaplist);
s->st_stid.sc_type = NFS4_CLOSED_STID;
spin_lock(&clp->cl_lock);
- unhash_open_stateid(s, &reaplist);
+ unhashed = unhash_open_stateid(s, &reaplist);
if (clp->cl_minorversion) {
- put_ol_stateid_locked(s, &reaplist);
+ if (unhashed)
+ put_ol_stateid_locked(s, &reaplist);
spin_unlock(&clp->cl_lock);
free_ol_stateid_reaplist(&reaplist);
} else {
spin_unlock(&clp->cl_lock);
free_ol_stateid_reaplist(&reaplist);
- move_to_close_lru(s, clp->net);
+ if (unhashed)
+ move_to_close_lru(s, clp->net);
}
}
@@ -6014,7 +6028,7 @@ nfsd_inject_add_lock_to_list(struct nfs4_ol_stateid *lst,
static u64 nfsd_foreach_client_lock(struct nfs4_client *clp, u64 max,
struct list_head *collect,
- void (*func)(struct nfs4_ol_stateid *))
+ bool (*func)(struct nfs4_ol_stateid *))
{
struct nfs4_openowner *oop;
struct nfs4_ol_stateid *stp, *st_next;
@@ -6028,9 +6042,9 @@ static u64 nfsd_foreach_client_lock(struct nfs4_client *clp, u64 max,
list_for_each_entry_safe(lst, lst_next,
&stp->st_locks, st_locks) {
if (func) {
- func(lst);
- nfsd_inject_add_lock_to_list(lst,
- collect);
+ if (func(lst))
+ nfsd_inject_add_lock_to_list(lst,
+ collect);
}
++count;
/*
generated by cgit v1.2.3 (git 2.39.1) at 2024-12-03 06:59:59 +0000