xiaomi-sm8450/android_kernel_xiaomi_sm8450
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

blk-mq: add blk_mq_alloc_request_hctx

Browse Source 
For some protocols like NVMe over Fabrics we need to be able to send
initialization commands to a specific queue.

Based on an earlier patch from Christoph Hellwig <hch@lst.de>.

Signed-off-by: Ming Lin <ming.l@ssi.samsung.com>
[hch: disallow sleeping allocation, req_op fixes]
Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Keith Busch <keith.busch@intel.com>
Signed-off-by: Jens Axboe <axboe@fb.com>
This commit is contained in:
Ming Lin
2016-06-13 16:45:21 +02:00
committed by Jens Axboe
parent 9e2d23f19e
commit 1f5bd336b9
2 changed files with 41 additions and 0 deletions
Download Patch File Download Diff File Expand all files Collapse all files

2
include/linux/blk-mq.h
View File

@@ -196,6 +196,8 @@ enum {
struct request *blk_mq_alloc_request(struct request_queue *q, int rw,
unsigned int flags);
struct request *blk_mq_alloc_request_hctx(struct request_queue *q, int op,
unsigned int flags, unsigned int hctx_idx);
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);