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| author | Tejun Heo <tj@kernel.org> | 2011-10-19 14:32:38 +0200 |
|---|---|---|
| committer | Jens Axboe <axboe@kernel.dk> | 2011-10-19 14:32:38 +0200 |
| commit | e3c78ca524d230bc145e902625e88c392a58ddf3 (patch) | |
| tree | 833eb544dd4180fd626f60da17788aae7830f4dc /block/blk.h | |
| parent | 315fceee81155ef2aeed9316ca72aeea9347db5c (diff) | |
| download | blackbird-op-linux-e3c78ca524d230bc145e902625e88c392a58ddf3.tar.gz blackbird-op-linux-e3c78ca524d230bc145e902625e88c392a58ddf3.zip | |
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.h | 1 |
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, |
