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authorTejun Heo <tj@kernel.org>2011-10-19 14:32:38 +0200
committerJens Axboe <axboe@kernel.dk>2011-10-19 14:32:38 +0200
commite3c78ca524d230bc145e902625e88c392a58ddf3 (patch)
tree833eb544dd4180fd626f60da17788aae7830f4dc /block/blk.h
parent315fceee81155ef2aeed9316ca72aeea9347db5c (diff)
downloadlinux-stericsson-e3c78ca524d230bc145e902625e88c392a58ddf3.tar.gz
block: reorganize queue draining
Reorganize queue draining related code in preparation of queue exit changes. * Factor out actual draining from elv_quiesce_start() to blk_drain_queue(). * Make elv_quiesce_start/end() responsible for their own locking. * Replace open-coded ELVSWITCH clearing in elevator_switch() with elv_quiesce_end(). This patch doesn't cause any visible functional difference. Signed-off-by: Tejun Heo <tj@kernel.org> Signed-off-by: Jens Axboe <axboe@kernel.dk>
Diffstat (limited to 'block/blk.h')
-rw-r--r--block/blk.h1
1 files changed, 1 insertions, 0 deletions
diff --git a/block/blk.h b/block/blk.h
index da247ba2aeaf..2b66dc21a493 100644
--- a/block/blk.h
+++ b/block/blk.h
@@ -15,6 +15,7 @@ void blk_rq_bio_prep(struct request_queue *q, struct request *rq,
struct bio *bio);
int blk_rq_append_bio(struct request_queue *q, struct request *rq,
struct bio *bio);
+void blk_drain_queue(struct request_queue *q);
void blk_dequeue_request(struct request *rq);
void __blk_queue_free_tags(struct request_queue *q);
bool __blk_end_bidi_request(struct request *rq, int error,