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Commit 602c4d11 authored by Christoph Lameter's avatar Christoph Lameter Committed by Linus Torvalds
Browse files

page flags: handle PG_uncached like all other flags 



Remove the special setup for PG_uncached and simply make it part of the enum.
The page flag will only be allocated when the kernel build includes the
uncached allocator.

Acked-by: default avatarDean Nelson <dcn@sgi.com>
Cc: Jes Sorensen <jes@trained-monkey.org>
Signed-off-by: default avatarChristoph Lameter <clameter@sgi.com>
Signed-off-by: default avatarAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
parent 0a128b2b

include/linux/page-flags.h

+8 −11
Original line number Diff line number Diff line
@@ -88,16 +88,8 @@ enum pageflags { 
	PG_mappedtodisk,	/* Has blocks allocated on-disk */

	PG_reclaim,		/* To be reclaimed asap */

	PG_buddy,		/* Page is free, on buddy lists */



#if (BITS_PER_LONG > 32)

/*

 * 64-bit-only flags build down from bit 31

 *

 * 32 bit  -------------------------------| FIELDS |       FLAGS         |

 * 64 bit  |           FIELDS             | ??????         FLAGS         |

 *         63                            32                              0

 */

	PG_uncached = 31,		/* Page has been mapped as uncached */

#ifdef CONFIG_IA64_UNCACHED_ALLOCATOR

	PG_uncached,		/* Page has been mapped as uncached */

#endif

	__NR_PAGEFLAGS

};
@@ -194,8 +186,13 @@ static inline int PageSwapCache(struct page *page) 
}

#endif



#if (BITS_PER_LONG > 32)

#ifdef CONFIG_IA64_UNCACHED_ALLOCATOR

PAGEFLAG(Uncached, uncached)

#else

static inline int PageUncached(struct page *)

{

	return 0;

}

#endif



static inline int PageUptodate(struct page *page)