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authorMing Lei <ming.lei@canonical.com>2014-09-25 19:23:43 +0400
committerJens Axboe <axboe@fb.com>2014-09-26 01:22:40 +0400
commit7c94e1c157a227837b04f02f5edeff8301410ba2 (patch)
tree3b592095b0204ebad61dd22b77aa1e72595dbc3a /include/linux/blkdev.h
parent7ddab5de5b80d3111f9e6765714e728b2c4f1c07 (diff)
downloadlinux-7c94e1c157a227837b04f02f5edeff8301410ba2.tar.xz
block: introduce blk_flush_queue to drive flush machinery
This patch introduces 'struct blk_flush_queue' and puts all flush machinery related fields into this structure, so that - flush implementation details aren't exposed to driver - it is easy to convert to per dispatch-queue flush machinery This patch is basically a mechanical replacement. Reviewed-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Ming Lei <ming.lei@canonical.com> Signed-off-by: Jens Axboe <axboe@fb.com>
Diffstat (limited to 'include/linux/blkdev.h')
-rw-r--r--include/linux/blkdev.h10
1 files changed, 2 insertions, 8 deletions
diff --git a/include/linux/blkdev.h b/include/linux/blkdev.h
index e267bf0db559..49f3461e4272 100644
--- a/include/linux/blkdev.h
+++ b/include/linux/blkdev.h
@@ -36,6 +36,7 @@ struct request;
struct sg_io_hdr;
struct bsg_job;
struct blkcg_gq;
+struct blk_flush_queue;
#define BLKDEV_MIN_RQ 4
#define BLKDEV_MAX_RQ 128 /* Default maximum */
@@ -455,14 +456,7 @@ struct request_queue {
*/
unsigned int flush_flags;
unsigned int flush_not_queueable:1;
- unsigned int flush_queue_delayed:1;
- unsigned int flush_pending_idx:1;
- unsigned int flush_running_idx:1;
- unsigned long flush_pending_since;
- struct list_head flush_queue[2];
- struct list_head flush_data_in_flight;
- struct request *flush_rq;
- spinlock_t mq_flush_lock;
+ struct blk_flush_queue *fq;
struct list_head requeue_list;
spinlock_t requeue_lock;