From: Rik van Riel <riel@redhat.com>
To: aarcange@redhat.com
Cc: linux-mm@kvack.org, Mel Gorman <mel@csn.ul.ie>,
Johannes Weiner <jweiner@redhat.com>,
Hugh Dickins <hughd@google.com>
Subject: Re: [PATCH 1 of 3] mremap: check for overflow using deltas
Date: Wed, 10 Aug 2011 20:14:31 -0400 [thread overview]
Message-ID: <4E431EE7.5070306@redhat.com> (raw)
In-Reply-To: <d244e0b6060fdeac2ab6.1312649883@localhost>
On 08/06/2011 12:58 PM, aarcange@redhat.com wrote:
> From: Andrea Arcangeli<aarcange@redhat.com>
>
> Using "- 1" relies on the old_end to be page aligned and PAGE_SIZE> 1, those
> are reasonable requirements but the check remains obscure and it looks more
> like an off by one error than an overflow check. This I feel will improve
> readibility.
>
> Signed-off-by: Andrea Arcangeli<aarcange@redhat.com>
Acked-by: Rik van Riel <riel@redhat.com>
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next prev parent reply other threads:[~2011-08-11 0:15 UTC|newest]
Thread overview: 16+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-08-06 16:58 [PATCH 0 of 3] THP: mremap support and TLB optimization #3 aarcange
2011-08-06 16:58 ` [PATCH 1 of 3] mremap: check for overflow using deltas aarcange
2011-08-08 8:20 ` Johannes Weiner
2011-08-10 10:48 ` Mel Gorman
2011-08-11 0:14 ` Rik van Riel [this message]
2011-08-06 16:58 ` [PATCH 2 of 3] mremap: avoid sending one IPI per page aarcange
2011-08-08 8:23 ` Johannes Weiner
2011-08-10 10:55 ` Mel Gorman
2011-08-11 0:16 ` Rik van Riel
2011-08-06 16:58 ` [PATCH 3 of 3] thp: mremap support and TLB optimization aarcange
2011-08-08 8:25 ` Johannes Weiner
2011-08-10 11:01 ` Mel Gorman
2011-08-11 0:26 ` Rik van Riel
2011-08-23 21:14 ` Andrew Morton
2011-08-23 22:13 ` Andrea Arcangeli
2011-08-23 22:25 ` Andrea Arcangeli
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