linux-kernel - Re: [PATCH] tmpfs: truncate at i

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Message-ID: <5580821D.3050508@fb.com>
Date:	Tue, 16 Jun 2015 13:07:57 -0700
From:	Josef Bacik <jbacik@...com>
To:	Hugh Dickins <hughd@...gle.com>
CC:	Andrew Morton <akpm@...ux-foundation.org>, <linux-mm@...ck.org>,
	<linux-kernel@...r.kernel.org>
Subject: Re: [PATCH] tmpfs: truncate at i_size

On 06/16/2015 01:02 PM, Hugh Dickins wrote:
> On Tue, 19 May 2015, Josef Bacik wrote:
>
>> If we fallocate past i_size with KEEP_SIZE, extend the file to use some but not
>> all of this space, and then truncate(i_size) we won't trim the excess
>> preallocated space.  We decided at LSF that we want to truncate the fallocated
>> bit past i_size when we truncate to i_size, which is what this patch does.
>> Thanks,
>>
>> Signed-off-by: Josef Bacik <jbacik@...com>
>
> Sorry for the delay, it's been on my mind but only now I get to it.
> Yes, that was agreed at LSF, and I've checked that indeed tmpfs is
> out of line here: thank you for fixing it.  But I do prefer your
> original more explicit description, so I'll send the patch to akpm
> now for v4.2, with that description instead (plus a reference to LSF).
>

Sounds good, thanks Hugh.

Josef

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