linux-kernel - Re: [PATCH 1/2] fs: add RWF

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Message-ID: <20180502173207.GA27997@infradead.org>
Date:   Wed, 2 May 2018 10:32:07 -0700
From:   Christoph Hellwig <hch@...radead.org>
To:     adam.manzanares@....com
Cc:     viro@...iv.linux.org.uk, bcrl@...ck.org,
        linux-fsdevel@...r.kernel.org, linux-aio@...ck.org,
        linux-abi-devel@...ts.sourceforge.net, linux-kernel@...r.kernel.org
Subject: Re: [PATCH 1/2] fs: add RWF_IOPRIO

On Mon, Apr 30, 2018 at 09:57:39AM -0700, adam.manzanares@....com wrote:
> From: Adam Manzanares <adam.manzanares@....com>
> 
> This is the per-I/O equivalent of the ioprio_set system call.
> 
> When the RWF_IOPRIO flag is set then the aio_reqprio field of the iocb
> is interpreted as an I/O scheduling class and priority.

I think this belongs into the IOCB_FLAG_* flags namespace for aio_flags
field as it isn't a field valid for plain read/write.

Also you probably want to merge both patches as they only really
make sense together.