From: Nick Piggin <npiggin@xxxxxxx> list_add_tail_rcu contains required barriers. Signed-off-by: Nick Piggin <npiggin@xxxxxxx> Signed-off-by: Jens Axboe <jens.axboe@xxxxxxxxxx> --- fs/fs-writeback.c | 6 +++--- 1 files changed, 3 insertions(+), 3 deletions(-) diff --git a/fs/fs-writeback.c b/fs/fs-writeback.c index 3475775..59c99e7 100644 --- a/fs/fs-writeback.c +++ b/fs/fs-writeback.c @@ -151,10 +151,10 @@ static void bdi_queue_work(struct backing_dev_info *bdi, struct bdi_work *work) BUG_ON(!bdi->wb_cnt); /* - * Make sure stores are seen before it appears on the list + * list_add_tail_rcu() contains the necessary barriers to + * make sure the above stores are seen before the item is + * noticed on the list */ - smp_mb(); - spin_lock(&bdi->wb_lock); list_add_tail_rcu(&work->list, &bdi->work_list); spin_unlock(&bdi->wb_lock); -- 1.6.4.1.207.g68ea -- To unsubscribe from this list: send the line "unsubscribe linux-fsdevel" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
