linux-kernel - Re: switch the block layer to use kmap_local

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Date:   Tue, 8 Jun 2021 18:59:43 -0700
From:   Ira Weiny <ira.weiny@...el.com>
To:     Christoph Hellwig <hch@....de>
Cc:     Jens Axboe <axboe@...nel.dk>,
        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>, 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: Re: switch the block layer to use kmap_local_page

On Tue, Jun 08, 2021 at 06:05:47PM +0200, Christoph Hellwig wrote:
> 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.

Other than the missing flush_dcache's.

For the series.

Reviewed-by: Ira Weiny <ira.weiny@...el.com>

> 
> 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(-)