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pageflags: eliminate PG_xxx aliases 

Remove aliases of PG_xxx.  We can easily drop those now and alias by
specifying the PG_xxx flag in the macro that generates the functions.

Signed-off-by: Christoph Lameter <clameter@sgi.com>
Cc: Andy Whitcroft <apw@shadowen.org>
Cc: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>
Cc: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com>
Cc: Rik van Riel <riel@redhat.com>
Cc: Mel Gorman <mel@csn.ul.ie>
Cc: Jeremy Fitzhardinge <jeremy@goop.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Christoph Lameter 2008-04-28 02:12:52 -07:00 committed by Linus Torvalds
parent d60cd46bbd
commit 0a128b2b1a
2 changed files with 5 additions and 9 deletions
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12
include/linux/page-flags.h
View File

@ -79,8 +79,6 @@ enum pageflags {
PG_active,
PG_slab,
PG_owner_priv_1, /* Owner use. If pagecache, fs may use*/
PG_checked = PG_owner_priv_1, /* Used by some filesystems */
PG_pinned = PG_owner_priv_1, /* Xen pinned pagetable */
PG_arch_1,
PG_reserved,
PG_private, /* If pagecache, has fs-private data */
@ -89,8 +87,6 @@ enum pageflags {
PG_swapcache, /* Swap page: swp_entry_t in private */
PG_mappedtodisk, /* Has blocks allocated on-disk */
PG_reclaim, /* To be reclaimed asap */
/* PG_readahead is only used for file reads; PG_reclaim is only for writes */
PG_readahead = PG_reclaim, /* Reminder to do async read-ahead */
PG_buddy, /* Page is free, on buddy lists */
#if (BITS_PER_LONG > 32)
@ -158,8 +154,8 @@ PAGEFLAG(Dirty, dirty) TESTSCFLAG(Dirty, dirty) __CLEARPAGEFLAG(Dirty, dirty)
PAGEFLAG(LRU, lru) __CLEARPAGEFLAG(LRU, lru)
PAGEFLAG(Active, active) __CLEARPAGEFLAG(Active, active)
__PAGEFLAG(Slab, slab)
PAGEFLAG(Checked, checked) /* Used by some filesystems */
PAGEFLAG(Pinned, pinned) TESTSCFLAG(Pinned, pinned) /* Xen pagetable */
PAGEFLAG(Checked, owner_priv_1) /* Used by some filesystems */
PAGEFLAG(Pinned, owner_priv_1) TESTSCFLAG(Pinned, owner_priv_1) /* Xen */
PAGEFLAG(Reserved, reserved) __CLEARPAGEFLAG(Reserved, reserved)
PAGEFLAG(Private, private) __CLEARPAGEFLAG(Private, private)
__SETPAGEFLAG(Private, private)
@ -174,14 +170,14 @@ PAGEFLAG(MappedToDisk, mappedtodisk)
/* PG_readahead is only used for file reads; PG_reclaim is only for writes */
PAGEFLAG(Reclaim, reclaim) TESTCLEARFLAG(Reclaim, reclaim)
PAGEFLAG(Readahead, readahead) /* Reminder to do async read-ahead */
PAGEFLAG(Readahead, reclaim) /* Reminder to do async read-ahead */
#ifdef CONFIG_HIGHMEM
/*
* Must use a macro here due to header dependency issues. page_zone() is not
* available at this point.
*/
#define PageHighMem(__p) is_highmem(page_zone(page))
#define PageHighMem(__p) is_highmem(page_zone(__p))
#else
static inline int PageHighMem(struct page *page)
{

2
mm/page_alloc.c
View File

@ -632,7 +632,7 @@ static int prep_new_page(struct page *page, int order, gfp_t gfp_flags)
if (PageReserved(page))
return 1;
page->flags &= ~(1 << PG_uptodate | 1 << PG_error | 1 << PG_readahead |
page->flags &= ~(1 << PG_uptodate | 1 << PG_error | 1 << PG_reclaim |
1 << PG_referenced | 1 << PG_arch_1 |
1 << PG_owner_priv_1 | 1 << PG_mappedtodisk);
set_page_private(page, 0);