From: Filipe Manana <fdmanana@xxxxxxxx>
This patch has been added to the 3.18 stable tree. If you have any
objections, please let us know.
===============
[ Upstream commit 271dba4521aed0c37c063548f876b49f5cd64b2e ]
If we failed to create a hard link we were not always releasing the
the transaction handle we got before, resulting in a memory leak and
preventing any other tasks from being able to commit the current
transaction.
Fix this by always releasing our transaction handle.
Signed-off-by: Filipe Manana <fdmanana@xxxxxxxx>
Reviewed-by: Liu Bo <bo.li.liu@xxxxxxxxxx>
Signed-off-by: Sasha Levin <sasha.levin@xxxxxxxxxx>
---
fs/btrfs/inode.c | 6 ++++--
1 file changed, 4 insertions(+), 2 deletions(-)
diff --git a/fs/btrfs/inode.c b/fs/btrfs/inode.c
index c3a77fa..c8d287f 100644
--- a/fs/btrfs/inode.c
+++ b/fs/btrfs/inode.c
@@ -6092,7 +6092,7 @@ out_unlock_inode:
static int btrfs_link(struct dentry *old_dentry, struct inode *dir,
struct dentry *dentry)
{
- struct btrfs_trans_handle *trans;
+ struct btrfs_trans_handle *trans = NULL;
struct btrfs_root *root = BTRFS_I(dir)->root;
struct inode *inode = old_dentry->d_inode;
u64 index;
@@ -6118,6 +6118,7 @@ static int btrfs_link(struct dentry *old_dentry, struct inode *dir,
trans = btrfs_start_transaction(root, 5);
if (IS_ERR(trans)) {
err = PTR_ERR(trans);
+ trans = NULL;
goto fail;
}
@@ -6151,9 +6152,10 @@ static int btrfs_link(struct dentry *old_dentry, struct inode *dir,
btrfs_log_new_name(trans, inode, NULL, parent);
}
- btrfs_end_transaction(trans, root);
btrfs_balance_delayed_items(root);
fail:
+ if (trans)
+ btrfs_end_transaction(trans, root);
if (drop_inode) {
inode_dec_link_count(inode);
iput(inode);
--
2.5.0
--
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