diff options
| author | Josef Bacik <josef@redhat.com> | 2012-05-31 23:49:57 +0400 |
|---|---|---|
| committer | Chris Mason <chris.mason@oracle.com> | 2012-06-15 05:29:12 +0400 |
| commit | d7096fc3ef8360f30f228344bc564d4f97d8a158 (patch) | |
| tree | c6a44d0b1cfc13d2449cf0d8ff8b7bae06bf0df1 /fs/btrfs/disk-io.c | |
| parent | b939d1ab76b4aa816343cdbd8b44ce9929a3b9ef (diff) | |
| download | linux-d7096fc3ef8360f30f228344bc564d4f97d8a158.tar.xz | |
Btrfs: wake up transaction waiters when aborting a transaction
I was getting lots of hung tasks and a NULL pointer dereference because we
are not cleaning up the transaction properly when it aborts. First we need
to reset the running_transaction to NULL so we don't get a bad dereference
for any start_transaction callers after this. Also we cannot rely on
waitqueue_active() since it's just a list_empty(), so just call wake_up()
directly since that will do the barrier for us and such. Thanks,
Signed-off-by: Josef Bacik <josef@redhat.com>
Diffstat (limited to 'fs/btrfs/disk-io.c')
| -rw-r--r-- | fs/btrfs/disk-io.c | 9 |
1 files changed, 3 insertions, 6 deletions
diff --git a/fs/btrfs/disk-io.c b/fs/btrfs/disk-io.c index c79ddc756081..19b4db70dcb1 100644 --- a/fs/btrfs/disk-io.c +++ b/fs/btrfs/disk-io.c @@ -3589,16 +3589,13 @@ void btrfs_cleanup_one_transaction(struct btrfs_transaction *cur_trans, /* FIXME: cleanup wait for commit */ cur_trans->in_commit = 1; cur_trans->blocked = 1; - if (waitqueue_active(&root->fs_info->transaction_blocked_wait)) - wake_up(&root->fs_info->transaction_blocked_wait); + wake_up(&root->fs_info->transaction_blocked_wait); cur_trans->blocked = 0; - if (waitqueue_active(&root->fs_info->transaction_wait)) - wake_up(&root->fs_info->transaction_wait); + wake_up(&root->fs_info->transaction_wait); cur_trans->commit_done = 1; - if (waitqueue_active(&cur_trans->commit_wait)) - wake_up(&cur_trans->commit_wait); + wake_up(&cur_trans->commit_wait); btrfs_destroy_pending_snapshots(cur_trans); |