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Merge branch 'for-4.8/core' of git://git.kernel.dk/linux-block

Browse Source 
Pull core block updates from Jens Axboe:

   - the big change is the cleanup from Mike Christie, cleaning up our
     uses of command types and modified flags.  This is what will throw
     some merge conflicts

   - regression fix for the above for btrfs, from Vincent

   - following up to the above, better packing of struct request from
     Christoph

   - a 2038 fix for blktrace from Arnd

   - a few trivial/spelling fixes from Bart Van Assche

   - a front merge check fix from Damien, which could cause issues on
     SMR drives

   - Atari partition fix from Gabriel

   - convert cfq to highres timers, since jiffies isn't granular enough
     for some devices these days.  From Jan and Jeff

   - CFQ priority boost fix idle classes, from me

   - cleanup series from Ming, improving our bio/bvec iteration

   - a direct issue fix for blk-mq from Omar

   - fix for plug merging not involving the IO scheduler, like we do for
     other types of merges.  From Tahsin

   - expose DAX type internally and through sysfs.  From Toshi and Yigal

* 'for-4.8/core' of git://git.kernel.dk/linux-block: (76 commits)
  block: Fix front merge check
  block: do not merge requests without consulting with io scheduler
  block: Fix spelling in a source code comment
  block: expose QUEUE_FLAG_DAX in sysfs
  block: add QUEUE_FLAG_DAX for devices to advertise their DAX support
  Btrfs: fix comparison in __btrfs_map_block()
  block: atari: Return early for unsupported sector size
  Doc: block: Fix a typo in queue-sysfs.txt
  cfq-iosched: Charge at least 1 jiffie instead of 1 ns
  cfq-iosched: Fix regression in bonnie++ rewrite performance
  cfq-iosched: Convert slice_resid from u64 to s64
  block: Convert fifo_time from ulong to u64
  blktrace: avoid using timespec
  block/blk-cgroup.c: Declare local symbols static
  block/bio-integrity.c: Add #include "blk.h"
  block/partition-generic.c: Remove a set-but-not-used variable
  block: bio: kill BIO_MAX_SIZE
  cfq-iosched: temporarily boost queue priority for idle classes
  block: drbd: avoid to use BIO_MAX_SIZE
  block: bio: remove BIO_MAX_SECTORS
  ...
This commit is contained in:
Linus Torvalds
2016-07-26 15:03:07 -07:00
parent 75a442efb1 17007f3994
commit d05d7f4079
199 changed files with 1919 additions and 1524 deletions
Download Patch File Download Diff File Expand all files Collapse all files

31
block/blk-lib.c
View File

@@ -9,21 +9,22 @@
#include "blk.h"
static struct bio *next_bio(struct bio *bio, int rw, unsigned int nr_pages,
static struct bio *next_bio(struct bio *bio, unsigned int nr_pages,
gfp_t gfp)
{
struct bio *new = bio_alloc(gfp, nr_pages);
if (bio) {
bio_chain(bio, new);
submit_bio(rw, bio);
submit_bio(bio);
}
return new;
}
int __blkdev_issue_discard(struct block_device *bdev, sector_t sector,
sector_t nr_sects, gfp_t gfp_mask, int type, struct bio **biop)
sector_t nr_sects, gfp_t gfp_mask, int op_flags,
struct bio **biop)
{
struct request_queue *q = bdev_get_queue(bdev);
struct bio *bio = *biop;
@@ -34,7 +35,7 @@ int __blkdev_issue_discard(struct block_device *bdev, sector_t sector,
return -ENXIO;
if (!blk_queue_discard(q))
return -EOPNOTSUPP;
if ((type & REQ_SECURE) && !blk_queue_secdiscard(q))
if ((op_flags & REQ_SECURE) && !blk_queue_secdiscard(q))
return -EOPNOTSUPP;
/* Zero-sector (unknown) and one-sector granularities are the same. */
@@ -62,9 +63,10 @@ int __blkdev_issue_discard(struct block_device *bdev, sector_t sector,
req_sects = end_sect - sector;
}
bio = next_bio(bio, type, 1, gfp_mask);
bio = next_bio(bio, 1, gfp_mask);
bio->bi_iter.bi_sector = sector;
bio->bi_bdev = bdev;
bio_set_op_attrs(bio, REQ_OP_DISCARD, op_flags);
bio->bi_iter.bi_size = req_sects << 9;
nr_sects -= req_sects;
@@ -98,19 +100,19 @@ EXPORT_SYMBOL(__blkdev_issue_discard);
int blkdev_issue_discard(struct block_device *bdev, sector_t sector,
sector_t nr_sects, gfp_t gfp_mask, unsigned long flags)
{
int type = REQ_WRITE | REQ_DISCARD;
int op_flags = 0;
struct bio *bio = NULL;
struct blk_plug plug;
int ret;
if (flags & BLKDEV_DISCARD_SECURE)
type |= REQ_SECURE;
op_flags |= REQ_SECURE;
blk_start_plug(&plug);
ret = __blkdev_issue_discard(bdev, sector, nr_sects, gfp_mask, type,
ret = __blkdev_issue_discard(bdev, sector, nr_sects, gfp_mask, op_flags,
&bio);
if (!ret && bio) {
ret = submit_bio_wait(type, bio);
ret = submit_bio_wait(bio);
if (ret == -EOPNOTSUPP)
ret = 0;
bio_put(bio);
@@ -148,13 +150,14 @@ int blkdev_issue_write_same(struct block_device *bdev, sector_t sector,
max_write_same_sectors = UINT_MAX >> 9;
while (nr_sects) {
bio = next_bio(bio, REQ_WRITE | REQ_WRITE_SAME, 1, gfp_mask);
bio = next_bio(bio, 1, gfp_mask);
bio->bi_iter.bi_sector = sector;
bio->bi_bdev = bdev;
bio->bi_vcnt = 1;
bio->bi_io_vec->bv_page = page;
bio->bi_io_vec->bv_offset = 0;
bio->bi_io_vec->bv_len = bdev_logical_block_size(bdev);
bio_set_op_attrs(bio, REQ_OP_WRITE_SAME, 0);
if (nr_sects > max_write_same_sectors) {
bio->bi_iter.bi_size = max_write_same_sectors << 9;
@@ -167,7 +170,7 @@ int blkdev_issue_write_same(struct block_device *bdev, sector_t sector,
}
if (bio) {
ret = submit_bio_wait(REQ_WRITE | REQ_WRITE_SAME, bio);
ret = submit_bio_wait(bio);
bio_put(bio);
}
return ret != -EOPNOTSUPP ? ret : 0;
@@ -193,11 +196,11 @@ static int __blkdev_issue_zeroout(struct block_device *bdev, sector_t sector,
unsigned int sz;
while (nr_sects != 0) {
bio = next_bio(bio, WRITE,
min(nr_sects, (sector_t)BIO_MAX_PAGES),
bio = next_bio(bio, min(nr_sects, (sector_t)BIO_MAX_PAGES),
gfp_mask);
bio->bi_iter.bi_sector = sector;
bio->bi_bdev = bdev;
bio_set_op_attrs(bio, REQ_OP_WRITE, 0);
while (nr_sects != 0) {
sz = min((sector_t) PAGE_SIZE >> 9 , nr_sects);
@@ -210,7 +213,7 @@ static int __blkdev_issue_zeroout(struct block_device *bdev, sector_t sector,
}
if (bio) {
ret = submit_bio_wait(WRITE, bio);
ret = submit_bio_wait(bio);
bio_put(bio);
return ret;
}