linux-ext4 - Re: [PATCH V7 2/9] fs: Remove unneeded IS_DAX() check in io_is

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Date:   Tue, 14 Apr 2020 08:22:04 +0200
From:   Christoph Hellwig <hch@....de>
To:     ira.weiny@...el.com
Cc:     linux-kernel@...r.kernel.org,
        "Darrick J. Wong" <darrick.wong@...cle.com>,
        Dan Williams <dan.j.williams@...el.com>,
        Dave Chinner <david@...morbit.com>,
        Christoph Hellwig <hch@....de>,
        "Theodore Y. Ts'o" <tytso@....edu>, Jan Kara <jack@...e.cz>,
        Jeff Moyer <jmoyer@...hat.com>, linux-ext4@...r.kernel.org,
        linux-xfs@...r.kernel.org, linux-fsdevel@...r.kernel.org
Subject: Re: [PATCH V7 2/9] fs: Remove unneeded IS_DAX() check in
 io_is_direct()

On Sun, Apr 12, 2020 at 10:40:39PM -0700, ira.weiny@...el.com wrote:
> From: Ira Weiny <ira.weiny@...el.com>
> 
> Remove the check because DAX now has it's own read/write methods and
> file systems which support DAX check IS_DAX() prior to IOCB_DIRECT on
> their own.  Therefore, it does not matter if the file state is DAX when
> the iocb flags are created.
> 
> Also remove io_is_direct() as it is just a simple flag check.
> 
> Signed-off-by: Ira Weiny <ira.weiny@...el.com>

Looks good,

Reviewed-by: Christoph Hellwig <hch@....de>