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Date:   Mon, 14 Mar 2022 09:02:09 +0100
From:   Christoph Hellwig <hch@lst.de>
To:     Al Viro <viro@zeniv.linux.org.uk>
Cc:     Christoph Hellwig <hch@lst.de>, axboe@kernel.dk,
        linux-block@vger.kernel.org, linux-fsdevel@vger.kernel.org
Subject: Re: [PATCH 2/2] fs: remove fs.f_write_hint
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On Sun, Mar 13, 2022 at 01:05:55AM +0000, Al Viro wrote:
> On Mon, Mar 07, 2022 at 11:47:01AM +0100, Christoph Hellwig wrote:
> > The value is now completely unused except for reporting it back through
> > the F_GET_FILE_RW_HINT ioctl, so remove the value and the two ioctls
> > for it.
> 
> Obvious question - which userland code issues these ioctls?  I obviously
> like the series, but...

The only places I've ever found are fio and ceph.  Despite all the noise
about Android, the google code search for Android does not actually find
a user there.