This is a note to let you know that I've just added the patch titled
GFS2: Increase i_writecount during gfs2_setattr_chown
to the 3.12-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
gfs2-increase-i_writecount-during-gfs2_setattr_chown.patch
and it can be found in the queue-3.12 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From 62e96cf81988101fe9e086b2877307b6adda5197 Mon Sep 17 00:00:00 2001
From: Bob Peterson <rpeterso@xxxxxxxxxx>
Date: Mon, 6 Jan 2014 17:16:01 -0500
Subject: GFS2: Increase i_writecount during gfs2_setattr_chown
From: Bob Peterson <rpeterso@xxxxxxxxxx>
commit 62e96cf81988101fe9e086b2877307b6adda5197 upstream.
This patch calls get_write_access in function gfs2_setattr_chown,
which merely increases inode->i_writecount for the duration of the
function. That will ensure that any file closes won't delete the
inode's multi-block reservation while the function is running.
It also ensures that a multi-block reservation exists when needed
for quota change operations during the chown.
Signed-off-by: Bob Peterson <rpeterso@xxxxxxxxxx>
Signed-off-by: Steven Whitehouse <swhiteho@xxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
fs/gfs2/inode.c | 16 +++++++++++++++-
1 file changed, 15 insertions(+), 1 deletion(-)
--- a/fs/gfs2/inode.c
+++ b/fs/gfs2/inode.c
@@ -1610,10 +1610,22 @@ static int setattr_chown(struct inode *i
if (!(attr->ia_valid & ATTR_GID) || gid_eq(ogid, ngid))
ogid = ngid = NO_GID_QUOTA_CHANGE;
- error = gfs2_quota_lock(ip, nuid, ngid);
+ error = get_write_access(inode);
if (error)
return error;
+ error = gfs2_rs_alloc(ip);
+ if (error)
+ goto out;
+
+ error = gfs2_rindex_update(sdp);
+ if (error)
+ goto out;
+
+ error = gfs2_quota_lock(ip, nuid, ngid);
+ if (error)
+ goto out;
+
if (!uid_eq(ouid, NO_UID_QUOTA_CHANGE) ||
!gid_eq(ogid, NO_GID_QUOTA_CHANGE)) {
error = gfs2_quota_check(ip, nuid, ngid);
@@ -1640,6 +1652,8 @@ out_end_trans:
gfs2_trans_end(sdp);
out_gunlock_q:
gfs2_quota_unlock(ip);
+out:
+ put_write_access(inode);
return error;
}
Patches currently in stable-queue which might be from rpeterso@xxxxxxxxxx are
queue-3.12/gfs2-increase-i_writecount-during-gfs2_setattr_chown.patch
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