aboutsummaryrefslogtreecommitdiffstats
path: root/fs
diff options
context:
space:
mode:
authorLiu Bo <bo.li.liu@oracle.com>2013-03-04 16:25:41 +0000
committerJosef Bacik <jbacik@fusionio.com>2013-03-04 16:33:23 -0500
commit66b6135b7cf741f6f44ba938b27583ea3b83bd12 (patch)
tree40f18d5bed7e86d303a908fd21d3b851462c00b5 /fs
parent0f788c58194e4ccc5b3ab23f872c5e18542335e4 (diff)
Btrfs: avoid deadlock on transaction waiting list
Only let one trans handle to wait for other handles, otherwise we will get ABBA issues. Signed-off-by: Liu Bo <bo.li.liu@oracle.com> Signed-off-by: Josef Bacik <jbacik@fusionio.com>
Diffstat (limited to 'fs')
-rw-r--r--fs/btrfs/transaction.c7
1 files changed, 7 insertions, 0 deletions
diff --git a/fs/btrfs/transaction.c b/fs/btrfs/transaction.c
index d8fce6fe9cf8..fedede1fe178 100644
--- a/fs/btrfs/transaction.c
+++ b/fs/btrfs/transaction.c
@@ -1457,6 +1457,13 @@ static void cleanup_transaction(struct btrfs_trans_handle *trans,
btrfs_abort_transaction(trans, root, err);
spin_lock(&root->fs_info->trans_lock);
+
+ if (list_empty(&cur_trans->list)) {
+ spin_unlock(&root->fs_info->trans_lock);
+ btrfs_end_transaction(trans, root);
+ return;
+ }
+
list_del_init(&cur_trans->list);
if (cur_trans == root->fs_info->running_transaction) {
root->fs_info->trans_no_join = 1;

Privacy Policy