Commit 4e99a1ff authored Mar 06, 2008 by Trond Myklebust

NFS: Fix dentry revalidation for NFSv4 referrals and mountpoint crossings

As long as the directory contents haven't changed, we should just let the
path walk proceed to cross the mountpoint. Apart from being an optimisation
in the case of 'nohide' mountpoint traversals, it also fixes an issue with
referrals: referral inodes don't have valid filehandles, so calling
nfs_revalidate_inode() on them is a bug.

Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>

parent c37dcd33

fs/nfs/dir.c

+2 −0

Original line number	Diff line number	Diff line
		@@ -710,6 +710,8 @@ int nfs_lookup_verify_inode(struct inode inode, struct nameidata nd)
		{
		struct nfs_server *server = NFS_SERVER(inode);

		if (test_bit(NFS_INO_MOUNTPOINT, &NFS_I(inode)->flags))
		return 0;
		if (nd != NULL) {
		/* VFS wants an on-the-wire revalidation */
		if (nd->flags & LOOKUP_REVAL)

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