linux-kernel - [PATCH v2 0/4] Bitmap optimisations

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Message-Id: <20170628153221.11322-1-willy@infradead.org>
Date:   Wed, 28 Jun 2017 08:32:17 -0700
From:   Matthew Wilcox <willy@...radead.org>
To:     linux-kernel@...r.kernel.org
Cc:     Andrew Morton <akpm@...ux-foundation.org>,
        Martin Schwidefsky <schwidefsky@...ibm.com>,
        Rasmus Villemoes <linux@...musvillemoes.dk>,
        Matthew Wilcox <mawilcox@...rosoft.com>
Subject: [PATCH v2 0/4] Bitmap optimisations

From: Matthew Wilcox <mawilcox@...rosoft.com>

These three bitmap patches use more efficient specialisations when the
compiler can figure out that it's safe to do so.  Thanks to Rasmus'
eagle eyes, a nasty bug in v1 was avoided, and I've added a test case
which would have caught it.

Matthew Wilcox (4):
  test_bitmap: Add optimisation tests
  bitmap: Optimise bitmap_set and bitmap_clear of a single bit
  Turn bitmap_set and bitmap_clear into memset when possible
  bitmap: Use memcmp optimisation in more situations

 include/linux/bitmap.h | 33 +++++++++++++++++++++++++++------
 lib/bitmap.c           |  8 ++++----
 lib/test_bitmap.c      | 29 +++++++++++++++++++++++++++++
 3 files changed, 60 insertions(+), 10 deletions(-)

-- 
2.11.0