From: Linus Torvalds <torvalds@linux-foundation.org>
Date: Sun, 4 Feb 2018 19:16:35 +0000 (-0800)
Subject: Merge tag 'for-linus-20180204' of git://git.kernel.dk/linux-block
X-Git-Tag: v4.19~1653
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=64b28683deba132f301d1cecfc25c32e295f53a1;p=platform%2Fkernel%2Flinux-rpi3.git

Merge tag 'for-linus-20180204' of git://git.kernel.dk/linux-block

Pull more block updates from Jens Axboe:
 "Most of this is fixes and not new code/features:

   - skd fix from Arnd, fixing a build error dependent on sla allocator
     type.

   - blk-mq scheduler discard merging fixes, one from me and one from
     Keith. This fixes a segment miscalculation for blk-mq-sched, where
     we mistakenly think two segments are physically contigious even
     though the request isn't carrying real data. Also fixes a bio-to-rq
     merge case.

   - Don't re-set a bit on the buffer_head flags, if it's already set.
     This can cause scalability concerns on bigger machines and
     workloads. From Kemi Wang.

   - Add BLK_STS_DEV_RESOURCE return value to blk-mq, allowing us to
     distuingish between a local (device related) resource starvation
     and a global one. The latter might happen without IO being in
     flight, so it has to be handled a bit differently. From Ming"

* tag 'for-linus-20180204' of git://git.kernel.dk/linux-block:
  block: skd: fix incorrect linux/slab_def.h inclusion
  buffer: Avoid setting buffer bits that are already set
  blk-mq-sched: Enable merging discard bio into request
  blk-mq: fix discard merge with scheduler attached
  blk-mq: introduce BLK_STS_DEV_RESOURCE
---

64b28683deba132f301d1cecfc25c32e295f53a1