aboutsummaryrefslogtreecommitdiffstats
path: root/include/linux/page-flags.h
diff options
context:
space:
mode:
authorAndy Whitcroft <apw@shadowen.org>2008-07-24 00:27:19 -0400
committerLinus Torvalds <torvalds@linux-foundation.org>2008-07-24 13:47:15 -0400
commit9023cb7e8564d95a1893f8cb6895a293be9a71fe (patch)
tree641e9918124a2a9e6642916ed9d23f97fbf95526 /include/linux/page-flags.h
parent8a38082d21cbc5ec961da7dda195e98a9a064dcf (diff)
slob: record page flag overlays explicitly
SLOB reuses two page bits for internal purposes, it overlays PG_active and PG_private. This is hidden away in slob.c. Document these overlays explicitly in the main page-flags enum along with all the others. Signed-off-by: Andy Whitcroft <apw@shadowen.org> Cc: Pekka Enberg <penberg@cs.helsinki.fi> Cc: Christoph Lameter <cl@linux-foundation.org> Cc: Matt Mackall <mpm@selenic.com> Cc: Nick Piggin <nickpiggin@yahoo.com.au> Reviewed-by: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com> Cc: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com> Cc: Rik van Riel <riel@redhat.com> Cc: Jeremy Fitzhardinge <jeremy@goop.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'include/linux/page-flags.h')
-rw-r--r--include/linux/page-flags.h7
1 files changed, 7 insertions, 0 deletions
diff --git a/include/linux/page-flags.h b/include/linux/page-flags.h
index 3fc586b7b90b..54590a9a103e 100644
--- a/include/linux/page-flags.h
+++ b/include/linux/page-flags.h
@@ -105,6 +105,10 @@ enum pageflags {
105 PG_pinned = PG_owner_priv_1, 105 PG_pinned = PG_owner_priv_1,
106 PG_savepinned = PG_dirty, 106 PG_savepinned = PG_dirty,
107 107
108 /* SLOB */
109 PG_slob_page = PG_active,
110 PG_slob_free = PG_private,
111
108 /* SLUB */ 112 /* SLUB */
109 PG_slub_frozen = PG_active, 113 PG_slub_frozen = PG_active,
110 PG_slub_debug = PG_error, 114 PG_slub_debug = PG_error,
@@ -173,6 +177,9 @@ PAGEFLAG(Reserved, reserved) __CLEARPAGEFLAG(Reserved, reserved)
173PAGEFLAG(Private, private) __CLEARPAGEFLAG(Private, private) 177PAGEFLAG(Private, private) __CLEARPAGEFLAG(Private, private)
174 __SETPAGEFLAG(Private, private) 178 __SETPAGEFLAG(Private, private)
175 179
180__PAGEFLAG(SlobPage, slob_page)
181__PAGEFLAG(SlobFree, slob_free)
182
176__PAGEFLAG(SlubFrozen, slub_frozen) 183__PAGEFLAG(SlubFrozen, slub_frozen)
177__PAGEFLAG(SlubDebug, slub_debug) 184__PAGEFLAG(SlubDebug, slub_debug)
178 185