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| author | Nick Piggin <npiggin@suse.de> | 2006-03-22 00:08:43 -0800 |
|---|---|---|
| committer | Linus Torvalds <torvalds@g5.osdl.org> | 2006-03-22 07:54:02 -0800 |
| commit | 617d2214ee06c209e5c375c280d50abace8058e1 (patch) | |
| tree | dd2fbf4a2cfa9854ebf27e6f100608c8a0507850 /include/linux/mm.h | |
| parent | b7ab795b7bec9997d4fde39f249d52823d36d98d (diff) | |
| download | blackbird-op-linux-617d2214ee06c209e5c375c280d50abace8058e1.tar.gz blackbird-op-linux-617d2214ee06c209e5c375c280d50abace8058e1.zip | |
[PATCH] mm: optimise page_count
Optimise page_count compound page test and make it consistent with similar
functions.
Signed-off-by: Nick Piggin <npiggin@suse.de>
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 | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/include/linux/mm.h b/include/linux/mm.h index 7d8c127daad7..6aa016f1d3ae 100644 --- a/include/linux/mm.h +++ b/include/linux/mm.h @@ -311,7 +311,7 @@ extern void FASTCALL(__page_cache_release(struct page *)); static inline int page_count(struct page *page) { - if (PageCompound(page)) + if (unlikely(PageCompound(page))) page = (struct page *)page_private(page); return atomic_read(&page->_count); } |
