linux-kernel - Re: [PATCH v2 0/3] on top of for-5.16/block

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Message-ID: <e52033e5-bff6-c2a3-9e23-ccfa505b064d@gmail.com>
Date:   Wed, 13 Oct 2021 10:15:37 +0100
From:   Pavel Begunkov <asml.silence@...il.com>
To:     Jens Axboe <axboe@...nel.dk>, linux-block@...r.kernel.org,
        linux-kernel@...r.kernel.org
Cc:     Christoph Hellwig <hch@...radead.org>
Subject: Re: [PATCH v2 0/3] on top of for-5.16/block

On 10/13/21 09:57, Pavel Begunkov wrote:

Bodged subject, should've been block optimisation or so.

> ./io_uring -d32 -s32 -c32 -b512 -p1 /dev/nullb0
> ~3.3 MIOPS vs 3.5 MIOPS, so gives around extra ~4-5%.
> 
> The main part is caching struct block_device + some inlining.
> 
> v2: without applied patches, merge previous 6/6 into the second patch
>      get rid of helpers (Jens, Christoph)
>      kill bdev_inode and move inode into bdev (Christoph)
> 
> Pavel Begunkov (3):
>    block: cache bdev in struct file for raw bdev IO
>    block: don't hide inode from block_device users
>    blk-mq: optimise *end_request non-stat path
> 
>   block/bdev.c              | 44 ++++++++++-----------------------------
>   block/blk-mq.c            | 18 +++++++---------
>   block/fops.c              | 43 ++++++++++++++++----------------------
>   include/linux/blk_types.h |  1 +
>   include/linux/blkdev.h    |  8 +++++--
>   5 files changed, 44 insertions(+), 70 deletions(-)
> 

-- 
Pavel Begunkov