linux-ext4 - Re: [RFC 1/7] iomap: Don't fall back to buffered write if the write is atomic

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Date: Mon, 4 Dec 2023 18:34:11 +0000
From: John Garry <john.g.garry@...cle.com>
To: "Darrick J. Wong" <djwong@...nel.org>
Cc: Dave Chinner <david@...morbit.com>, Ojaswin Mujoo
 <ojaswin@...ux.ibm.com>,
        linux-ext4@...r.kernel.org, Theodore Ts'o <tytso@....edu>,
        Ritesh Harjani <ritesh.list@...il.com>, linux-kernel@...r.kernel.org,
        linux-block@...r.kernel.org, linux-xfs@...r.kernel.org,
        linux-fsdevel@...r.kernel.org, dchinner@...hat.com
Subject: Re: [RFC 1/7] iomap: Don't fall back to buffered write if the write
 is atomic

On 04/12/2023 18:17, Darrick J. Wong wrote:
>> If we could just run statx on a file descriptor here then that would be
>> simpler...
> statx(fd, "", AT_EMPTY_PATH, ...); ?

I really meant that if we could only run statx on a fd then we could 
know if we want DIO or buffered IO (as that is how it was opened).

Thanks,
John