linux-kernel - Re: Man page doc for SEEK_DATA/SEEK

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Message-ID: <4E77827C.3030202@redhat.com>
Date:	Mon, 19 Sep 2011 11:57:16 -0600
From:	Eric Blake <eblake@...hat.com>
To:	mtk.manpages@...il.com
CC:	Josef Bacik <josef@...hat.com>, linux-man@...r.kernel.org,
	linux-fsdevel@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: Man page doc for SEEK_DATA/SEEK_HOLE

On 09/18/2011 01:07 AM, Michael Kerrisk wrote:
> +
> +.BR SEEK_DATA
> +and
> +.BR SEEK_HOLE
> +are nonstandard extensions also present in Solaris.

Looks good to me, but you may also want to link to the proposed wording 
for mandating SEEK_HOLE/SEEK_DATA in the eventual POSIX Issue 8 (POSIX 
2008 is Issue 7):
http://austingroupbugs.net/view.php?id=415

Also, it seems a shame that the kernel can fail with EINVAL instead of 
properly emulating SEEK_HOLE and SEEK_DATA even on file systems with no 
underlying support for reporting holes.

-- 
Eric Blake   eblake@...hat.com    +1-801-349-2682
Libvirt virtualization library http://libvirt.org
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