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

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Date:	Tue, 20 Sep 2011 08:59:26 -0700
From:	Sunil Mushran <sunil.mushran@...cle.com>
To:	mtk.manpages@...il.com
CC:	Josef Bacik <josef@...hat.com>, linux-man@...r.kernel.org,
	Eric Blake <eblake@...hat.com>, linux-fsdevel@...r.kernel.org,
	linux-kernel@...r.kernel.org
Subject: Re: Man page doc for SEEK_DATA/SEEK_HOLE

On 09/19/2011 10:32 PM, Michael Kerrisk wrote:
> Hi Sunil,
>
> On Mon, Sep 19, 2011 at 8:04 PM, Sunil Mushran<sunil.mushran@...cle.com>  wrote:
>> On 09/18/2011 12:07 AM, Michael Kerrisk wrote:
>>> Hello Josef,
>>>
>>> For Linux 3.1, you've added SEEK_HOLE + SEEK_DATA. I've attempted to
>>> document these as below for the lseek.2 man page. Could you please
>>> review?
>>>
>>> Thanks,
>>>
>>> Michael
>>>
>>>
>>> diff --git a/man2/lseek.2 b/man2/lseek.2
>>> index 26943e2..941ea08 100644
>>> --- a/man2/lseek.2
>>> +++ b/man2/lseek.2
>>> @@ -85,6 +85,69 @@ of the file (but this does not change the size of the
>>> file).
>>>   If data is later written at this point, subsequent reads of the data
>>>   in the gap (a "hole") return null bytes (\(aq\\0\(aq) until
>>>   data is actually written into the gap.
>>> +.SS Seeking file data and holes
>>> +Since version 3.1, Linux supports the following additional values for
>>> +.IR whence :
>>> +.TP
>>> +.B SEEK_DATA
>>> +Adjust the file offset to the next region
>>> +in the file greater than or equal to
>>> +.I offset
>> I would recommend dropping the word next as it is confusing considering the
>> offset returned could be the offset passed in.
> I changed "region" to "location", but otherwise left this unchanged. I
> couldn't see a good alternative formulation, and also the next
> sentence of the page makes your point clear.

Fine by me.
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