NFS: If the VFS sets LOOKUP_REVAL then force a lookup of the dentry

If nfs_lookup_revalidate() is called with LOOKUP_REVAL because a
previous path lookup failed, then we ought to force a full lookup
of the component name.

Signed-off-by: Trond Myklebust <trond.myklebust@hammerspace.com>
This commit is contained in:
Trond Myklebust 2018-05-10 10:13:09 -04:00
parent 479219218f
commit 73dd684a4d

View file

@ -1118,7 +1118,7 @@ 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) {