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Re: [PATCH 2.5.66-mm2] Fix page_convert_anon locking issues

To: Hugh Dickins <hugh@veritas.com>
Subject: Re: [PATCH 2.5.66-mm2] Fix page_convert_anon locking issues
From: Dave McCracken <dmccr@us.ibm.com>
Date: Thu, 03 Apr 2003 10:39:37 -0600
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--On Thursday, April 03, 2003 17:33:31 +0100 Hugh Dickins
<hugh@veritas.com> wrote:

> No: see the various checks on page_count(page) in vmscan.c:
> though page_convert_anon temporarily leaves a page with neither
> mapcount nor the right number of pte pointers, page_count is unaffected.

Oh, hmm... Ok, so it's safe... This could have some interesting
implications all around.

Dave

======================================================================
Dave McCracken          IBM Linux Base Kernel Team      1-512-838-3059
dmccr@us.ibm.com                                        T/L   678-3059

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References:
- Re: [PATCH 2.5.66-mm2] Fix page_convert_anon locking issues
  - From: Hugh Dickins <hugh@veritas.com>

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