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 462859a..7ec1409 100644 (file)
--- a/fs/btrfs/async-thread.c
+++ b/fs/btrfs/async-thread.c
@@ -377,6 +377,7 @@ again:
                                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 (file)
--- a/fs/btrfs/transaction.c
+++ b/fs/btrfs/transaction.c
@@ -1063,9 +1063,6 @@ int btrfs_commit_transaction(struct btrfs_trans_handle *trans,
                        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 @@ int btrfs_commit_transaction(struct btrfs_trans_handle *trans,
                 */
                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);