btrfs_rename() does not release the subvol_sem if the transaction failed to start.
Signed-off-by: Johann Lombardi <johann@xxxxxxxxxxxxx>
---
fs/btrfs/inode.c | 8 +++++---
1 files changed, 5 insertions(+), 3 deletions(-)
diff --git a/fs/btrfs/inode.c b/fs/btrfs/inode.c
index 93c28a1..495b055 100644
--- a/fs/btrfs/inode.c
+++ b/fs/btrfs/inode.c
@@ -6960,8 +6960,10 @@ static int btrfs_rename(struct inode *old_dir, struct dentry *old_dentry,
* should cover the worst case number of items we'll modify.
*/
trans = btrfs_start_transaction(root, 20);
- if (IS_ERR(trans))
- return PTR_ERR(trans);
+ if (IS_ERR(trans)) {
+ ret = PTR_ERR(trans);
+ goto out_notrans;
+ }
btrfs_set_trans_block_group(trans, new_dir);
@@ -7061,7 +7063,7 @@ static int btrfs_rename(struct inode *old_dir, struct dentry *old_dentry,
}
out_fail:
btrfs_end_transaction_throttle(trans, root);
-
+out_notrans:
if (old_inode->i_ino == BTRFS_FIRST_FREE_OBJECTID)
up_read(&root->fs_info->subvol_sem);
--
1.7.1
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