From: Hugh Dickins <hugh@veritas.com>
Date: Sat, 16 Jun 2007 17:15:59 +0000 (-0700)
Subject: i386 mm: use pte_update() in ptep_test_and_clear_dirty()
X-Git-Tag: v2.6.22-rc5~17
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=d6f8bb1310d4745ff1d0c74eeacae31e2a3eeff1;p=pandora-kernel.git

i386 mm: use pte_update() in ptep_test_and_clear_dirty()

It is not safe to use pte_update_defer() in ptep_test_and_clear_young():
its only user, /proc/<pid>/clear_refs, drops pte lock before flushing TLB.
Use the safe though less efficient pte_update() paravirtop in its place.
Likewise in ptep_test_and_clear_dirty(), though that has no current use.

These are macros (header file dependency stops them from becoming inline
functions), so be more liberal with the underscores and parentheses.

Signed-off-by: Hugh Dickins <hugh@veritas.com>
Cc: Zachary Amsden <zach@vmware.com>
Cc: David Rientjes <rientjes@google.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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