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Merge branch 'for-4.4/io-poll' of git://git.kernel.dk/linux-block

Browse source 
Pull block IO poll support from Jens Axboe:
 "Various groups have been doing experimentation around IO polling for
  (really) fast devices.  The code has been reviewed and has been
  sitting on the side for a few releases, but this is now good enough
  for coordinated benchmarking and further experimentation.

  Currently O_DIRECT sync read/write are supported.  A framework is in
  the works that allows scalable stats tracking so we can auto-tune
  this.  And we'll add libaio support as well soon.  Fow now, it's an
  opt-in feature for test purposes"

* 'for-4.4/io-poll' of git://git.kernel.dk/linux-block:
  direct-io: be sure to assign dio->bio_bdev for both paths
  directio: add block polling support
  NVMe: add blk polling support
  block: add block polling support
  blk-mq: return tag/queue combo in the make_request_fn handlers
  block: change ->make_request_fn() and users to return a queue cookie
This commit is contained in:
Linus Torvalds 2015-11-10 17:23:49 -08:00
commit 3419b45039
33 changed files with 286 additions and 90 deletions
Download patch file Download diff file Expand all files Collapse all files

3
drivers/nvdimm/blk.c
View file

@ -161,7 +161,7 @@ static int nd_blk_do_bvec(struct nd_blk_device *blk_dev,
return err;
}
static void nd_blk_make_request(struct request_queue *q, struct bio *bio)
static blk_qc_t nd_blk_make_request(struct request_queue *q, struct bio *bio)
{
struct block_device *bdev = bio->bi_bdev;
struct gendisk *disk = bdev->bd_disk;
@ -208,6 +208,7 @@ static void nd_blk_make_request(struct request_queue *q, struct bio *bio)
out:
bio_endio(bio);
return BLK_QC_T_NONE;
}
static int nd_blk_rw_bytes(struct nd_namespace_common *ndns,

3
drivers/nvdimm/btt.c
View file

@ -1150,7 +1150,7 @@ static int btt_do_bvec(struct btt *btt, struct bio_integrity_payload *bip,
return ret;
}
static void btt_make_request(struct request_queue *q, struct bio *bio)
static blk_qc_t btt_make_request(struct request_queue *q, struct bio *bio)
{
struct bio_integrity_payload *bip = bio_integrity(bio);
struct btt *btt = q->queuedata;
@ -1198,6 +1198,7 @@ static void btt_make_request(struct request_queue *q, struct bio *bio)
out:
bio_endio(bio);
return BLK_QC_T_NONE;
}
static int btt_rw_page(struct block_device *bdev, sector_t sector,

3
drivers/nvdimm/pmem.c
View file

@ -64,7 +64,7 @@ static void pmem_do_bvec(struct pmem_device *pmem, struct page *page,
kunmap_atomic(mem);
}
static void pmem_make_request(struct request_queue *q, struct bio *bio)
static blk_qc_t pmem_make_request(struct request_queue *q, struct bio *bio)
{
bool do_acct;
unsigned long start;
@ -84,6 +84,7 @@ static void pmem_make_request(struct request_queue *q, struct bio *bio)
wmb_pmem();
bio_endio(bio);
return BLK_QC_T_NONE;
}
static int pmem_rw_page(struct block_device *bdev, sector_t sector,