diff options
| author |   Nick Piggin <npiggin@suse.de> | 2006-03-22 00:08:05 -0800 |
|---|---|---|
| committer |   Linus Torvalds <torvalds@g5.osdl.org> | 2006-03-22 07:53:57 -0800 |
| commit | 8dfcc9ba27e2ed257e5de9539f7f03e57c2c0e33 (patch) | |
| tree | aecaeb6a0b33c23f79dfcd2418e4a3881a29f2e2 /include/linux/mm.h | |
| parent | [PATCH] xtensa: pgtable fixes (diff) | |
| download | linux-dev-8dfcc9ba27e2ed257e5de9539f7f03e57c2c0e33.tar.xz linux-dev-8dfcc9ba27e2ed257e5de9539f7f03e57c2c0e33.zip | |
[PATCH] mm: split highorder pages
Have an explicit mm call to split higher order pages into individual pages.
Should help to avoid bugs and be more explicit about the code's intention.
Signed-off-by: Nick Piggin <npiggin@suse.de>
Cc: Russell King <rmk@arm.linux.org.uk>
Cc: David Howells <dhowells@redhat.com>
Cc: Ralf Baechle <ralf@linux-mips.org>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: Paul Mundt <lethal@linux-sh.org>
Cc: "David S. Miller" <davem@davemloft.net>
Cc: Chris Zankel <chris@zankel.net>
Signed-off-by: Yoichi Yuasa <yoichi_yuasa@tripeaks.co.jp>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'include/linux/mm.h')
| -rw-r--r-- | include/linux/mm.h | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/include/linux/mm.h b/include/linux/mm.h index 9bbddf228cd9..e67980654c49 100644 --- a/include/linux/mm.h +++ b/include/linux/mm.h @@ -328,6 +328,12 @@ static inline void get_page(struct page *page) void put_page(struct page *page); +#ifdef CONFIG_MMU +void split_page(struct page *page, unsigned int order); +#else +static inline void split_page(struct page *page, unsigned int order) {} +#endif + /* * Multiple processes may "see" the same page. E.g. for untouched * mappings of /dev/null, all processes see the same page full of |