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

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
  ...

1 files changed, 17 insertions, 14 deletions

diff --git a/block/blk-lib.c b/block/blk-lib.c
index 9e29dc351695..9031d2af0b47 100644
--- a/block/blk-lib.c
+++ b/block/blk-lib.c
@@ -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;
         }