x86: clarify use of _PAGE_CHG_MASK
authorJeremy Fitzhardinge <jeremy@goop.org>
Tue, 20 May 2008 07:26:22 +0000 (08:26 +0100)
committerLinus Torvalds <torvalds@linux-foundation.org>
Tue, 20 May 2008 14:51:21 +0000 (07:51 -0700)
commit86aaf4fd4ea25ddde05772d03b93dbce23c0ead1
treec959928776c649efa87842db6243460633591681
parent7f84133af6aaa86e9ef0e9e1970655439a8cf3a1
x86: clarify use of _PAGE_CHG_MASK

_PAGE_CHG_MASK is defined as the set of bits not updated by
pte_modify(); specifically, the pfn itself, and the Accessed and Dirty
bits (which are updated by hardware).

Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com>
Tested-by: Hugh Dickins <hugh@veritas.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
include/asm-x86/pgtable.h