linux-kernel - switch the block layer to use kmap_local

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Message-Id: <20210608160603.1535935-1-hch@lst.de>
Date:   Tue,  8 Jun 2021 18:05:47 +0200
From:   Christoph Hellwig <hch@....de>
To:     Jens Axboe <axboe@...nel.dk>
Cc:     Thomas Bogendoerfer <tsbogend@...ha.franken.de>,
        Geoff Levand <geoff@...radead.org>,
        Ilya Dryomov <idryomov@...il.com>,
        Dongsheng Yang <dongsheng.yang@...ystack.cn>,
        Mike Snitzer <snitzer@...hat.com>,
        Ira Weiny <ira.weiny@...el.com>, dm-devel@...hat.com,
        linux-mips@...r.kernel.org, linux-kernel@...r.kernel.org,
        linux-block@...r.kernel.org, linuxppc-dev@...ts.ozlabs.org,
        ceph-devel@...r.kernel.org
Subject: switch the block layer to use kmap_local_page

Hi all,

this series switches the core block layer code and all users of the
existing bvec kmap helpers to use kmap_local_page.  Drivers that
currently use open coded kmap_atomic calls will converted in a follow
on series.

Diffstat:
 arch/mips/include/asm/mach-rc32434/rb.h |    2 -
 block/bio-integrity.c                   |   14 ++++------
 block/bio.c                             |   37 +++++++---------------------
 block/blk-map.c                         |    2 -
 block/bounce.c                          |   35 ++++++--------------------
 block/t10-pi.c                          |   16 ++++--------
 drivers/block/ps3disk.c                 |   19 ++------------
 drivers/block/rbd.c                     |   15 +----------
 drivers/md/dm-writecache.c              |    5 +--
 include/linux/bio.h                     |   42 --------------------------------
 include/linux/bvec.h                    |   27 ++++++++++++++++++--
 include/linux/highmem.h                 |    4 +--
 12 files changed, 64 insertions(+), 154 deletions(-)