From: Linus Torvalds <torvalds@linux-foundation.org>
Date: Tue, 26 Jul 2016 22:03:07 +0000 (-0700)
Subject: Merge branch 'for-4.8/core' of git://git.kernel.dk/linux-block
X-Git-Tag: v4.8-rc1~162
X-Git-Url: https://git.karo-electronics.de/?a=commitdiff_plain;h=d05d7f40791c;p=karo-tx-linux.git

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
  ...
---

d05d7f40791ccbb6e543cc5dd6a6aa08fc71d635
diff --cc block/blk-lib.c
index 9e29dc351695,ff2a7f04af4d..9031d2af0b47
--- a/block/blk-lib.c
+++ b/block/blk-lib.c
@@@ -104,16 -106,15 +106,16 @@@ int blkdev_issue_discard(struct block_d
  	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);
  	}
  	blk_finish_plug(&plug);
  
@@@ -166,10 -168,8 +169,10 @@@ int blkdev_issue_write_same(struct bloc
  		}
  	}
  
 -	if (bio)
 +	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;
  }
  EXPORT_SYMBOL(blkdev_issue_write_same);
@@@ -209,11 -209,8 +212,11 @@@ static int __blkdev_issue_zeroout(struc
  		}
  	}
  
 -	if (bio)
 -		return submit_bio_wait(bio);
 +	if (bio) {
- 		ret = submit_bio_wait(WRITE, bio);
++		ret = submit_bio_wait(bio);
 +		bio_put(bio);
 +		return ret;
 +	}
  	return 0;
  }
  
diff --cc drivers/block/xen-blkfront.c
index fcc5b4e0aef2,343ef7abe5fd..da05d3f9bad2
--- a/drivers/block/xen-blkfront.c
+++ b/drivers/block/xen-blkfront.c
@@@ -2093,38 -2139,6 +2089,40 @@@ static int blkfront_resume(struct xenbu
  
  	dev_dbg(&dev->dev, "blkfront_resume: %s\n", dev->nodename);
  
 +	bio_list_init(&info->bio_list);
 +	INIT_LIST_HEAD(&info->requests);
 +	for (i = 0; i < info->nr_rings; i++) {
 +		struct blkfront_ring_info *rinfo = &info->rinfo[i];
 +		struct bio_list merge_bio;
 +		struct blk_shadow *shadow = rinfo->shadow;
 +
 +		for (j = 0; j < BLK_RING_SIZE(info); j++) {
 +			/* Not in use? */
 +			if (!shadow[j].request)
 +				continue;
 +
 +			/*
 +			 * Get the bios in the request so we can re-queue them.
 +			 */
- 			if (shadow[j].request->cmd_flags &
- 					(REQ_FLUSH | REQ_FUA | REQ_DISCARD | REQ_SECURE)) {
++			if (req_op(shadow[i].request) == REQ_OP_FLUSH ||
++			    req_op(shadow[i].request) == REQ_OP_DISCARD ||
++			    shadow[j].request->cmd_flags & (REQ_FUA | REQ_SECURE)) {
++			    
 +				/*
 +				 * Flush operations don't contain bios, so
 +				 * we need to requeue the whole request
 +				 */
 +				list_add(&shadow[j].request->queuelist, &info->requests);
 +				continue;
 +			}
 +			merge_bio.head = shadow[j].request->bio;
 +			merge_bio.tail = shadow[j].request->biotail;
 +			bio_list_merge(&info->bio_list, &merge_bio);
 +			shadow[j].request->bio = NULL;
 +			blk_mq_end_request(shadow[j].request, 0);
 +		}
 +	}
 +
  	blkif_free(info, info->connected == BLKIF_STATE_CONNECTED);
  
  	err = negotiate_mq(info);