| commit | 43506fad21ca3d8dc59e768ff458f7c5e5c01086 | |
| author | KyongHo Cho <pullip.cho@samsung.com> | |
| Thu, 13 Jan 2011 23:47:24 +0000 (13 15:47 -0800) | ||
| committer | Linus Torvalds <torvalds@linux-foundation.org> | |
| Fri, 14 Jan 2011 01:32:48 +0000 (13 17:32 -0800) | ||
| tree | b594f240a780e3547341530fedabb6ac4735ff41 | treesnapshot (tar.gz zip) |
| parent | 5520e89485252c759ee60d313e9422447659947b | commitdiff |
mm/page_alloc.c: simplify calculation of combined index of adjacent buddy lists
The previous approach of calucation of combined index was
page_idx & ~(1 << order))
but we have same result with
page_idx & buddy_idx
This reduces instructions slightly as well as enhances readability.
[akpm@linux-foundation.org: coding-style fixes]
[akpm@linux-foundation.org: fix used-unintialised warning]
Signed-off-by: KyongHo Cho <pullip.cho@samsung.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
The previous approach of calucation of combined index was
page_idx & ~(1 << order))
but we have same result with
page_idx & buddy_idx
This reduces instructions slightly as well as enhances readability.
[akpm@linux-foundation.org: coding-style fixes]
[akpm@linux-foundation.org: fix used-unintialised warning]
Signed-off-by: KyongHo Cho <pullip.cho@samsung.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
| mm/page_alloc.c | diffblobblamehistory |