linux-kernel - Re: [PATCH v9 11/12] block: call blk_account_io_start() in blk_execute_rq

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Date:   Thu, 10 Oct 2019 12:06:02 +0200
From:   Christoph Hellwig <hch@....de>
To:     Logan Gunthorpe <logang@...tatee.com>
Cc:     linux-kernel@...r.kernel.org, linux-nvme@...ts.infradead.org,
        linux-block@...r.kernel.org, linux-fsdevel@...r.kernel.org,
        Christoph Hellwig <hch@....de>,
        Sagi Grimberg <sagi@...mberg.me>,
        Keith Busch <kbusch@...nel.org>, Jens Axboe <axboe@...com>,
        Chaitanya Kulkarni <Chaitanya.Kulkarni@....com>,
        Max Gurtovoy <maxg@...lanox.com>,
        Stephen Bates <sbates@...thlin.com>
Subject: Re: [PATCH v9 11/12] block: call blk_account_io_start() in
 blk_execute_rq_nowait()

On Wed, Oct 09, 2019 at 01:25:29PM -0600, Logan Gunthorpe wrote:
> All existing users of blk_execute_rq[_nowait]() are for passthrough
> commands and will thus be rejected by blk_do_io_stat().
> 
> This allows passthrough requests to opt-in to IO accounting by setting
> RQF_IO_STAT.

This kinda goes along with the previous patch, so I suggest you
merge them.  I also think you just want to send that merged patch off
directly to Jens ASAP.