Commit 4ee2491e authored by Jens Axboe's avatar Jens Axboe
Browse files

fs: make fsync_buffers_list() plug 



It used WRITE_SYNC_PLUG before and potentially submits a batch
of IO, so lets enable plugging for this case.

Signed-off-by: default avatarJens Axboe <jaxboe@fusionio.com>
parent 9b6096a6

fs/buffer.c

+6 −0
Original line number Diff line number Diff line
@@ -743,8 +743,10 @@ static int fsync_buffers_list(spinlock_t *lock, struct list_head *list) 
	struct list_head tmp;

	struct address_space *mapping;

	int err = 0, err2;

	struct blk_plug plug;



	INIT_LIST_HEAD(&tmp);

	blk_start_plug(&plug);



	spin_lock(lock);

	while (!list_empty(list)) {
@@ -781,6 +783,10 @@ static int fsync_buffers_list(spinlock_t *lock, struct list_head *list) 
		}

	}



	spin_unlock(lock);

	blk_finish_plug(&plug);

	spin_lock(lock);



	while (!list_empty(&tmp)) {

		bh = BH_ENTRY(tmp.prev);

		get_bh(bh);