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| author | Christoph Lameter <clameter@sgi.com> | 2008-04-28 02:12:52 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2008-04-28 08:58:22 -0700 |
| commit | 602c4d112f9abf43af4b882b4a6f5505ed5c51b7 (patch) | |
| tree | 8c2cdb82fbf4c67899a3cab0ea0f2d3e2a3ffdfe /include/linux/page-flags.h | |
| parent | 0a128b2b1a5e8ebce0260e3345812ee70daccc7f (diff) | |
| download | lwn-602c4d112f9abf43af4b882b4a6f5505ed5c51b7.tar.gz lwn-602c4d112f9abf43af4b882b4a6f5505ed5c51b7.zip | |
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: Dean Nelson <dcn@sgi.com>
Cc: Jes Sorensen <jes@trained-monkey.org>
Signed-off-by: Christoph Lameter <clameter@sgi.com>
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.h | 19 |
1 files changed, 8 insertions, 11 deletions
diff --git a/include/linux/page-flags.h b/include/linux/page-flags.h index 437778c703f5..17deafa9eb9b 100644 --- a/include/linux/page-flags.h +++ b/include/linux/page-flags.h @@ -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) |