Commit 2eef8a31 authored by Trond Myklebust's avatar Trond Myklebust
Browse files

NFS: Trace lookup revalidation failure 



Enable tracing of lookup revalidation failures.

Signed-off-by: default avatarTrond Myklebust <trond.myklebust@hammerspace.com>
parent 1a93b82c

fs/nfs/dir.c

+5 −12
Original line number Diff line number Diff line
@@ -1474,9 +1474,7 @@ nfs_lookup_revalidate_done(struct inode *dir, struct dentry *dentry, 
{

	switch (error) {

	case 1:

		dfprintk(LOOKUPCACHE, "NFS: %s(%pd2) is valid\n",

			__func__, dentry);

		return 1;

		break;

	case 0:

		/*

		 * We can't d_drop the root of a disconnected tree:
@@ -1485,13 +1483,10 @@ nfs_lookup_revalidate_done(struct inode *dir, struct dentry *dentry, 
		 * inodes on unmount and further oopses.

		 */

		if (inode && IS_ROOT(dentry))

			return 1;

		dfprintk(LOOKUPCACHE, "NFS: %s(%pd2) is invalid\n",

				__func__, dentry);

		return 0;

			error = 1;

		break;

	}

	dfprintk(LOOKUPCACHE, "NFS: %s(%pd2) lookup returned error %d\n",

				__func__, dentry, error);

	trace_nfs_lookup_revalidate_exit(dir, dentry, 0, error);

	return error;

}
@@ -1623,9 +1618,7 @@ nfs_do_lookup_revalidate(struct inode *dir, struct dentry *dentry, 
		goto out_bad;



	trace_nfs_lookup_revalidate_enter(dir, dentry, flags);

	error = nfs_lookup_revalidate_dentry(dir, dentry, inode);

	trace_nfs_lookup_revalidate_exit(dir, dentry, flags, error);

	return error;

	return nfs_lookup_revalidate_dentry(dir, dentry, inode);

out_valid:

	return nfs_lookup_revalidate_done(dir, dentry, inode, 1);

out_bad: