This is a note to let you know that I've just added the patch titled
cifs: always do is_path_accessible check in cifs_mount
to the 2.6.33-longterm tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/longterm/longterm-queue-2.6.33.git;a=summary
The filename of the patch is:
cifs-always-do-is_path_accessible-check-in-cifs_mount.patch
and it can be found in the queue-2.6.33 subdirectory.
If you, or anyone else, feels it should not be added to the 2.6.33 longterm
tree,
please let <[email protected]> know about it.
>From 70945643722ffeac779d2529a348f99567fa5c33 Mon Sep 17 00:00:00 2001
From: Jeff Layton <[email protected]>
Date: Mon, 14 Mar 2011 13:48:08 -0400
Subject: cifs: always do is_path_accessible check in cifs_mount
From: Jeff Layton <[email protected]>
commit 70945643722ffeac779d2529a348f99567fa5c33 upstream.
Currently, we skip doing the is_path_accessible check in cifs_mount if
there is no prefixpath. I have a report of at least one server however
that allows a TREE_CONNECT to a share that has a DFS referral at its
root. The reporter in this case was using a UNC that had no prefixpath,
so the is_path_accessible check was not triggered and the box later hit
a BUG() because we were chasing a DFS referral on the root dentry for
the mount.
This patch fixes this by removing the check for a zero-length
prefixpath. That should make the is_path_accessible check be done in
this situation and should allow the client to chase the DFS referral at
mount time instead.
Reported-and-Tested-by: Yogesh Sharma <[email protected]>
Signed-off-by: Jeff Layton <[email protected]>
Signed-off-by: Steve French <[email protected]>
Signed-off-by: Greg Kroah-Hartman <[email protected]>
---
fs/cifs/connect.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
--- a/fs/cifs/connect.c
+++ b/fs/cifs/connect.c
@@ -2554,7 +2554,7 @@ try_mount_again:
remote_path_check:
/* check if a whole path (including prepath) is not remote */
- if (!rc && cifs_sb->prepathlen && tcon) {
+ if (!rc && tcon) {
/* build_path_to_root works only when we have a valid tcon */
full_path = cifs_build_path_to_root(cifs_sb);
if (full_path == NULL) {
Patches currently in longterm-queue-2.6.33 which might be from
[email protected] are
/home/gregkh/linux/longterm/longterm-queue-2.6.33/queue-2.6.33/cifs-set-ra_pages-in-backing_dev_info.patch
/home/gregkh/linux/longterm/longterm-queue-2.6.33/queue-2.6.33/cifs-always-do-is_path_accessible-check-in-cifs_mount.patch
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