Btrfs: don't walk around with task->state != TASK_RUNNING
Yan Zheng noticed two places we were doing a lot of work
without task->state set to TASK_RUNNING. This sets the state
properly after we get ready to sleep but decide not to.
Signed-off-by: Chris Mason <chris.mason@oracle.com>
diff --git a/fs/btrfs/async-thread.c b/fs/btrfs/async-thread.c
index 462859a3..7ec1409 100644
--- a/fs/btrfs/async-thread.c
+++ b/fs/btrfs/async-thread.c
@@ -377,6 +377,7 @@
if (!list_empty(&worker->pending) ||
!list_empty(&worker->prio_pending)) {
spin_unlock_irq(&worker->lock);
+ set_current_state(TASK_RUNNING);
goto again;
}
diff --git a/fs/btrfs/transaction.c b/fs/btrfs/transaction.c
index c346d32..66e4c66 100644
--- a/fs/btrfs/transaction.c
+++ b/fs/btrfs/transaction.c
@@ -1063,9 +1063,6 @@
snap_pending = 1;
WARN_ON(cur_trans != trans->transaction);
- prepare_to_wait(&cur_trans->writer_wait, &wait,
- TASK_UNINTERRUPTIBLE);
-
if (cur_trans->num_writers > 1)
timeout = MAX_SCHEDULE_TIMEOUT;
else if (should_grow)
@@ -1088,6 +1085,9 @@
*/
btrfs_run_ordered_operations(root, 1);
+ prepare_to_wait(&cur_trans->writer_wait, &wait,
+ TASK_UNINTERRUPTIBLE);
+
smp_mb();
if (cur_trans->num_writers > 1 || should_grow)
schedule_timeout(timeout);