diff options
| author | Trond Myklebust | 2006-06-09 09:34:19 -0400 |
|---|---|---|
| committer | Trond Myklebust | 2006-06-09 09:34:19 -0400 |
| commit | 55a975937d40cac582e981ddc8ed783b3dcc043c (patch) | |
| tree | 13507eaebdab5e9c9dd615fe373ec6c0ddcbade4 /fs/nfs/dir.c | |
| parent | 8b4bdcf8995dd92b23d2ec22b32aee8fbbb50e1c (diff) | |
NFS: Ensure the client submounts, when it crosses a server mountpoint.
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
Diffstat (limited to 'fs/nfs/dir.c')
| -rw-r--r-- | fs/nfs/dir.c | 16 |
1 files changed, 16 insertions, 0 deletions
diff --git a/fs/nfs/dir.c b/fs/nfs/dir.c index 1d3d8922a663..3ddda6f7ecc2 100644 --- a/fs/nfs/dir.c +++ b/fs/nfs/dir.c @@ -868,6 +868,17 @@ int nfs_is_exclusive_create(struct inode *dir, struct nameidata *nd) return (nd->intent.open.flags & O_EXCL) != 0; } +static inline int nfs_reval_fsid(struct inode *dir, + struct nfs_fh *fh, struct nfs_fattr *fattr) +{ + struct nfs_server *server = NFS_SERVER(dir); + + if (!nfs_fsid_equal(&server->fsid, &fattr->fsid)) + /* Revalidate fsid on root dir */ + return __nfs_revalidate_inode(server, dir->i_sb->s_root->d_inode); + return 0; +} + static struct dentry *nfs_lookup(struct inode *dir, struct dentry * dentry, struct nameidata *nd) { struct dentry *res; @@ -900,6 +911,11 @@ static struct dentry *nfs_lookup(struct inode *dir, struct dentry * dentry, stru res = ERR_PTR(error); goto out_unlock; } + error = nfs_reval_fsid(dir, &fhandle, &fattr); + if (error < 0) { + res = ERR_PTR(error); + goto out_unlock; + } inode = nfs_fhget(dentry->d_sb, &fhandle, &fattr); res = (struct dentry *)inode; if (IS_ERR(res)) |