| commit | 45726cb43d11b288c58243a26010f397054222f0 | [log] [tgz] |
|---|---|---|
| author | Nick Piggin <npiggin@suse.de> | Tue Oct 16 01:24:41 2007 -0700 |
| committer | Linus Torvalds <torvalds@woody.linux-foundation.org> | Tue Oct 16 09:42:53 2007 -0700 |
| tree | ae1804a34f314be18865add063d660cf783e45be | |
| parent | 001281881067a5998384c6669bc8dbbbab8456c4 [diff] |
mm: improve find_lock_page find_lock_page does not need to recheck ->index because if the page is in the right mapping then the index must be the same. Also, tree_lock does not need to be retaken after the page is locked in order to test that ->mapping has not changed, because holding the page lock pins its mapping. Signed-off-by: Nick Piggin <npiggin@suse.de> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>