From: Linus Torvalds <torvalds@linux-foundation.org>
Date: Tue, 31 Aug 2021 02:30:30 +0000 (-0700)
Subject: Merge tag 'io_uring-bio-cache.5-2021-08-30' of git://git.kernel.dk/linux-block
X-Git-Tag: microblaze-v5.16~186
X-Git-Url: http://git.monstr.eu/?p=linux-2.6-microblaze.git;a=commitdiff_plain;h=3b629f8d6dc04d3af94429c18fe17239d6fbe2c3

Merge tag 'io_uring-bio-cache.5-2021-08-30' of git://git.kernel.dk/linux-block

Pull support for struct bio recycling from Jens Axboe:
 "This adds bio recycling support for polled IO, allowing quick reuse of
  a bio for high IOPS scenarios via a percpu bio_set list.

  It's good for almost a 10% improvement in performance, bumping our
  per-core IO limit from ~3.2M IOPS to ~3.5M IOPS"

* tag 'io_uring-bio-cache.5-2021-08-30' of git://git.kernel.dk/linux-block:
  bio: improve kerneldoc documentation for bio_alloc_kiocb()
  block: provide bio_clear_hipri() helper
  block: use the percpu bio cache in __blkdev_direct_IO
  io_uring: enable use of bio alloc cache
  block: clear BIO_PERCPU_CACHE flag if polling isn't supported
  bio: add allocation cache abstraction
  fs: add kiocb alloc cache flag
  bio: optimize initialization of a bio
---

3b629f8d6dc04d3af94429c18fe17239d6fbe2c3