diff options
Diffstat (limited to 'fs/fs-writeback.c')
| -rw-r--r-- | fs/fs-writeback.c | 13 |
1 files changed, 6 insertions, 7 deletions
diff --git a/fs/fs-writeback.c b/fs/fs-writeback.c index 7eba7326b9b9..8e1e5e19d21e 100644 --- a/fs/fs-writeback.c +++ b/fs/fs-writeback.c @@ -97,6 +97,11 @@ static void bdi_work_clear(struct bdi_work *work) { clear_bit(WS_USED_B, &work->state); smp_mb__after_clear_bit(); + /* + * work can have disappeared at this point. bit waitq functions + * should be able to tolerate this, provided bdi_sched_wait does + * not dereference it's pointer argument. + */ wake_up_bit(&work->state, WS_USED_B); } @@ -169,13 +174,7 @@ static void bdi_queue_work(struct backing_dev_info *bdi, struct bdi_work *work) else { struct bdi_writeback *wb = &bdi->wb; - /* - * End work now if this wb has no dirty IO pending. Otherwise - * wakeup the handling thread - */ - if (!wb_has_dirty_io(wb)) - wb_clear_pending(wb, work); - else if (wb->task) + if (wb->task) wake_up_process(wb->task); } } |