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[PATCH] Rename PG_checked to PG_owner_priv_1 

Rename PG_checked to PG_owner_priv_1 to reflect its availablilty as a
private flag for use by the owner/allocator of the page.  In the case of
pagecache pages (which might be considered to be owned by the mm),
filesystems may use the flag.

Signed-off-by: Jeremy Fitzhardinge <jeremy@xensource.com>
Signed-off-by: Nick Piggin <nickpiggin@yahoo.com.au>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Nick Piggin 2007-02-28 20:12:27 -08:00 committed by Linus Torvalds
parent 93a6fefe2f
commit 5409bae07a
2 changed files with 4 additions and 2 deletions
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4
include/linux/page-flags.h
View File

@ -76,7 +76,7 @@
#define PG_active 6 #define PG_active 6
#define PG_slab 7 /* slab debug (Suparna wants this) */ #define PG_slab 7 /* slab debug (Suparna wants this) */
#define PG_checked 8 /* kill me in 2.5.<early>. */ #define PG_owner_priv_1 8 /* Owner use. If pagecache, fs may use*/
#define PG_arch_1 9 #define PG_arch_1 9
#define PG_reserved 10 #define PG_reserved 10
#define PG_private 11 /* If pagecache, has fs-private data */ #define PG_private 11 /* If pagecache, has fs-private data */
@ -91,6 +91,8 @@
#define PG_nosave_free 18 /* Used for system suspend/resume */ #define PG_nosave_free 18 /* Used for system suspend/resume */
#define PG_buddy 19 /* Page is free, on buddy lists */ #define PG_buddy 19 /* Page is free, on buddy lists */
/* PG_owner_priv_1 users should have descriptive aliases */
#define PG_checked PG_owner_priv_1 /* Used by some filesystems */
#if (BITS_PER_LONG > 32) #if (BITS_PER_LONG > 32)
/* /*

2
mm/page_alloc.c
View File

@ -600,7 +600,7 @@ static int prep_new_page(struct page *page, int order, gfp_t gfp_flags)
page->flags &= ~(1 << PG_uptodate | 1 << PG_error | page->flags &= ~(1 << PG_uptodate | 1 << PG_error |
1 << PG_referenced | 1 << PG_arch_1 | 1 << PG_referenced | 1 << PG_arch_1 |
1 << PG_checked | 1 << PG_mappedtodisk); 1 << PG_owner_priv_1 | 1 << PG_mappedtodisk);
set_page_private(page, 0); set_page_private(page, 0);
set_page_refcounted(page); set_page_refcounted(page);