* [PATCH] Btrfs: take ordered root lock when removing ordered operations inode
@ 2013-10-28 13:15 Josef Bacik
2013-10-29 14:33 ` David Sterba
0 siblings, 1 reply; 2+ messages in thread
From: Josef Bacik @ 2013-10-28 13:15 UTC (permalink / raw)
To: linux-btrfs
A user reported a list corruption warning from btrfs_remove_ordered_extent, it
is because we aren't taking the ordered_root_lock when we remove the inode from
the ordered operations list. Thanks,
Signed-off-by: Josef Bacik <jbacik@fusionio.com>
---
fs/btrfs/ordered-data.c | 2 ++
1 file changed, 2 insertions(+)
diff --git a/fs/btrfs/ordered-data.c b/fs/btrfs/ordered-data.c
index bbb1a38..8a5eff3 100644
--- a/fs/btrfs/ordered-data.c
+++ b/fs/btrfs/ordered-data.c
@@ -537,7 +537,9 @@ void btrfs_remove_ordered_extent(struct inode *inode,
*/
if (RB_EMPTY_ROOT(&tree->tree) &&
!mapping_tagged(inode->i_mapping, PAGECACHE_TAG_DIRTY)) {
+ spin_lock(&root->fs_info->ordered_root_lock);
list_del_init(&BTRFS_I(inode)->ordered_operations);
+ spin_unlock(&root->fs_info->ordered_root_lock);
}
if (!root->nr_ordered_extents) {
--
1.8.3.1
^ permalink raw reply related [flat|nested] 2+ messages in thread
* Re: [PATCH] Btrfs: take ordered root lock when removing ordered operations inode
2013-10-28 13:15 [PATCH] Btrfs: take ordered root lock when removing ordered operations inode Josef Bacik
@ 2013-10-29 14:33 ` David Sterba
0 siblings, 0 replies; 2+ messages in thread
From: David Sterba @ 2013-10-29 14:33 UTC (permalink / raw)
To: Josef Bacik; +Cc: linux-btrfs
On Mon, Oct 28, 2013 at 09:15:14AM -0400, Josef Bacik wrote:
> A user reported a list corruption warning from btrfs_remove_ordered_extent, it
> is because we aren't taking the ordered_root_lock when we remove the inode from
> the ordered operations list. Thanks,
>
> Signed-off-by: Josef Bacik <jbacik@fusionio.com>
Reviewed-by: David Sterba <dsterba@suse.cz>
For stable; it's been there since day 1.
^ permalink raw reply [flat|nested] 2+ messages in thread
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2013-10-28 13:15 [PATCH] Btrfs: take ordered root lock when removing ordered operations inode Josef Bacik
2013-10-29 14:33 ` David Sterba
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