From: William Lee Irwin III <wli@holomorphy.com>
Date: Sun, 1 May 2005 15:58:38 +0000 (-0700)
Subject: [PATCH] sync_page() smp_mb() comment
X-Git-Tag: v2.6.12-rc4~136^2~175
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=dd1d5afca8d3bda7ff9db773fc08e648d2503dc6;p=pandora-kernel.git

[PATCH] sync_page() smp_mb() comment

The smp_mb() is becaus sync_page() doesn't have PG_locked while it accesses
page_mapping(page).  The comments in the patch (the entire patch is the
addition of this comment) try to explain further how and why smp_mb() is
used.

Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
---

Reading git-diff-tree failed