diff mbox

Btrfs: fix ordered extent leak when failing to start a transaction

Message ID 1345605205-18685-1-git-send-email-bo.li.liu@oracle.com (mailing list archive)
State New, archived
Headers show

Commit Message

Liu Bo Aug. 22, 2012, 3:13 a.m. UTC
From: Liu Bo <bo.li.liu@oracle.com>

We cannot just return error before freeing ordered extent and releasing reserved
space when we fail to start a transacion.

Signed-off-by: Liu Bo <bo.li.liu@oracle.com>
---
 fs/btrfs/inode.c |    7 +++++--
 1 files changed, 5 insertions(+), 2 deletions(-)

Comments

David Sterba Aug. 24, 2012, 2:19 p.m. UTC | #1
On Wed, Aug 22, 2012 at 11:13:25AM +0800, bo.li.liu@oracle.com wrote:
> We cannot just return error before freeing ordered extent and releasing reserved
> space when we fail to start a transacion.
> 
> Signed-off-by: Liu Bo <bo.li.liu@oracle.com>
> ---
>  fs/btrfs/inode.c |    7 +++++--
>  1 files changed, 5 insertions(+), 2 deletions(-)
> 
> diff --git a/fs/btrfs/inode.c b/fs/btrfs/inode.c
> index 7131fac..f6c43ff 100644
> --- a/fs/btrfs/inode.c
> +++ b/fs/btrfs/inode.c
> @@ -1883,8 +1883,11 @@ static int btrfs_finish_ordered_io(struct btrfs_ordered_extent *ordered_extent)
>  				trans = btrfs_join_transaction_nolock(root);
>  			else
>  				trans = btrfs_join_transaction(root);
> -			if (IS_ERR(trans))
> -				return PTR_ERR(trans);
> +			if (IS_ERR(trans)) {
> +				ret = PTR_ERR(trans);
> +				trans = NULL;
> +				goto out;
> +			}

The same code is used a few lines below (after locking the range) when
transaction fails, so I agree that this should be done here as well. Ack.


david
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diff mbox

Patch

diff --git a/fs/btrfs/inode.c b/fs/btrfs/inode.c
index 7131fac..f6c43ff 100644
--- a/fs/btrfs/inode.c
+++ b/fs/btrfs/inode.c
@@ -1883,8 +1883,11 @@  static int btrfs_finish_ordered_io(struct btrfs_ordered_extent *ordered_extent)
 				trans = btrfs_join_transaction_nolock(root);
 			else
 				trans = btrfs_join_transaction(root);
-			if (IS_ERR(trans))
-				return PTR_ERR(trans);
+			if (IS_ERR(trans)) {
+				ret = PTR_ERR(trans);
+				trans = NULL;
+				goto out;
+			}
 			trans->block_rsv = &root->fs_info->delalloc_block_rsv;
 			ret = btrfs_update_inode_fallback(trans, root, inode);
 			if (ret) /* -ENOMEM or corruption */