From: Rik van Riel <riel@redhat.com>
To: Hugh Dickins <hughd@google.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>,
Andrea Arcangeli <aarcange@redhat.com>, Greg KH <greg@kroah.com>,
Andrew Morton <akpm@linux-foundation.org>,
linux-mm@kvack.org, linux-kernel@vger.kernel.org
Subject: Re: [PATCH] mm: further fix swapin race condition
Date: Sun, 19 Sep 2010 23:09:38 -0400 [thread overview]
Message-ID: <4C96D072.5080305@redhat.com> (raw)
In-Reply-To: <alpine.LSU.2.00.1009191938110.3025@sister.anvils>
On 09/19/2010 10:40 PM, Hugh Dickins wrote:
> Commit 4969c1192d15afa3389e7ae3302096ff684ba655 "mm: fix swapin race condition"
> is now agreed to be incomplete. There's a race, not very much less likely
> than the original race envisaged, in which it is further necessary to check
> that the swapcache page's swap has not changed.
> B ought to have checked that page1's swap was still swap1.
>
> Signed-off-by: Hugh Dickins<hughd@google.com>
> Cc: stable@kernel.org
Reviewed-by: Rik van Riel <riel@redhat.com>
--
All rights reversed
WARNING: multiple messages have this Message-ID (diff)
From: Rik van Riel <riel@redhat.com>
To: Hugh Dickins <hughd@google.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>,
Andrea Arcangeli <aarcange@redhat.com>, Greg KH <greg@kroah.com>,
Andrew Morton <akpm@linux-foundation.org>,
linux-mm@kvack.org, linux-kernel@vger.kernel.org
Subject: Re: [PATCH] mm: further fix swapin race condition
Date: Sun, 19 Sep 2010 23:09:38 -0400 [thread overview]
Message-ID: <4C96D072.5080305@redhat.com> (raw)
In-Reply-To: <alpine.LSU.2.00.1009191938110.3025@sister.anvils>
On 09/19/2010 10:40 PM, Hugh Dickins wrote:
> Commit 4969c1192d15afa3389e7ae3302096ff684ba655 "mm: fix swapin race condition"
> is now agreed to be incomplete. There's a race, not very much less likely
> than the original race envisaged, in which it is further necessary to check
> that the swapcache page's swap has not changed.
> B ought to have checked that page1's swap was still swap1.
>
> Signed-off-by: Hugh Dickins<hughd@google.com>
> Cc: stable@kernel.org
Reviewed-by: Rik van Riel <riel@redhat.com>
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All rights reversed
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next prev parent reply other threads:[~2010-09-20 3:09 UTC|newest]
Thread overview: 17+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-09-03 15:39 [PATCH] fix swapin race condition Andrea Arcangeli
2010-09-03 20:02 ` Andrew Morton
2010-09-04 12:29 ` Andrea Arcangeli
2010-09-03 23:57 ` Rik van Riel
2010-09-06 2:35 ` Hugh Dickins
2010-09-15 23:02 ` Hugh Dickins
2010-09-15 23:42 ` Andrea Arcangeli
2010-09-16 0:10 ` Hugh Dickins
2010-09-16 21:03 ` Andrea Arcangeli
2010-09-16 21:08 ` Andrea Arcangeli
2010-09-17 2:31 ` Hugh Dickins
2010-09-18 13:19 ` Andrea Arcangeli
2010-09-20 2:35 ` Hugh Dickins
2010-09-20 2:40 ` [PATCH] mm: further " Hugh Dickins
2010-09-20 2:40 ` Hugh Dickins
2010-09-20 3:09 ` Rik van Riel [this message]
2010-09-20 3:09 ` Rik van Riel
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