diff options
| author | Christoph Hellwig | 2015-11-26 09:13:05 +0100 |
|---|---|---|
| committer | Jens Axboe | 2015-12-01 18:53:59 +0100 |
| commit | 6f3b0e8bcf3cbb87a7459b3ed018d31d918df3f8 (patch) | |
| tree | 78520f9313db6743cb1ba6feb805120e80113a8d /include | |
| parent | Revert "blk-flush: Queue through IO scheduler when flush not required" (diff) | |
| download | kernel-qcow2-linux-6f3b0e8bcf3cbb87a7459b3ed018d31d918df3f8.tar.gz kernel-qcow2-linux-6f3b0e8bcf3cbb87a7459b3ed018d31d918df3f8.tar.xz kernel-qcow2-linux-6f3b0e8bcf3cbb87a7459b3ed018d31d918df3f8.zip | |
blk-mq: add a flags parameter to blk_mq_alloc_request
We already have the reserved flag, and a nowait flag awkwardly encoded as
a gfp_t. Add a real flags argument to make the scheme more extensible and
allow for a nicer calling convention.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Jens Axboe <axboe@fb.com>
Diffstat (limited to 'include')
| -rw-r--r-- | include/linux/blk-mq.h | 8 | ||||
| -rw-r--r-- | include/linux/blkdev.h | 2 |
2 files changed, 8 insertions, 2 deletions
diff --git a/include/linux/blk-mq.h b/include/linux/blk-mq.h index daf17d70aeca..7fc9296b5742 100644 --- a/include/linux/blk-mq.h +++ b/include/linux/blk-mq.h @@ -188,8 +188,14 @@ void blk_mq_insert_request(struct request *, bool, bool, bool); void blk_mq_free_request(struct request *rq); void blk_mq_free_hctx_request(struct blk_mq_hw_ctx *, struct request *rq); bool blk_mq_can_queue(struct blk_mq_hw_ctx *); + +enum { + BLK_MQ_REQ_NOWAIT = (1 << 0), /* return when out of requests */ + BLK_MQ_REQ_RESERVED = (1 << 1), /* allocate from reserved pool */ +}; + struct request *blk_mq_alloc_request(struct request_queue *q, int rw, - gfp_t gfp, bool reserved); + unsigned int flags); struct request *blk_mq_tag_to_rq(struct blk_mq_tags *tags, unsigned int tag); struct cpumask *blk_mq_tags_cpumask(struct blk_mq_tags *tags); diff --git a/include/linux/blkdev.h b/include/linux/blkdev.h index c0d2b7927c1f..e711f294934c 100644 --- a/include/linux/blkdev.h +++ b/include/linux/blkdev.h @@ -794,7 +794,7 @@ extern int scsi_cmd_ioctl(struct request_queue *, struct gendisk *, fmode_t, extern int sg_scsi_ioctl(struct request_queue *, struct gendisk *, fmode_t, struct scsi_ioctl_command __user *); -extern int blk_queue_enter(struct request_queue *q, gfp_t gfp); +extern int blk_queue_enter(struct request_queue *q, bool nowait); extern void blk_queue_exit(struct request_queue *q); extern void blk_start_queue(struct request_queue *q); extern void blk_stop_queue(struct request_queue *q); |