diff options
| author | Jan Kara <jack@suse.cz> | 2012-03-12 16:05:50 +0100 |
|---|---|---|
| committer | David Sterba <dsterba@suse.cz> | 2012-03-22 11:53:11 +0100 |
| commit | 914b20070b413ca10f832c45a58b2894990f065f (patch) | |
| tree | 1c1f6af7f0f1243e9585a4b726065d579eebc3e9 | |
| parent | 79787eaab46121d4713ed03c8fc63b9ec3eaec76 (diff) | |
btrfs: Fix busyloop in transaction_kthread()
When a filesystem got aborted due do error, transaction_kthread() will
busyloop. Fix it by going to sleep in that case as well. Maybe we should
just stop transaction_kthread() when filesystem is aborted but that would be
more complex.
Signed-off-by: Jan Kara <jack@suse.cz>
| -rw-r--r-- | fs/btrfs/disk-io.c | 9 |
1 files changed, 7 insertions, 2 deletions
diff --git a/fs/btrfs/disk-io.c b/fs/btrfs/disk-io.c index 16a0cada26c2..438993e3d832 100644 --- a/fs/btrfs/disk-io.c +++ b/fs/btrfs/disk-io.c @@ -1640,8 +1640,10 @@ static int transaction_kthread(void *arg) u64 transid; unsigned long now; unsigned long delay; + bool cannot_commit; do { + cannot_commit = false; delay = HZ * 30; vfs_check_frozen(root->fs_info->sb, SB_FREEZE_WRITE); mutex_lock(&root->fs_info->transaction_kthread_mutex); @@ -1665,8 +1667,10 @@ static int transaction_kthread(void *arg) /* If the file system is aborted, this will always fail. */ trans = btrfs_join_transaction(root); - if (IS_ERR(trans)) + if (IS_ERR(trans)) { + cannot_commit = true; goto sleep; + } if (transid == trans->transid) { btrfs_commit_transaction(trans, root); } else { @@ -1679,7 +1683,8 @@ sleep: if (!try_to_freeze()) { set_current_state(TASK_INTERRUPTIBLE); if (!kthread_should_stop() && - !btrfs_transaction_blocked(root->fs_info)) + (!btrfs_transaction_blocked(root->fs_info) || + cannot_commit)) schedule_timeout(delay); __set_current_state(TASK_RUNNING); } |