| commit | 451ea25da71590361c71bf3044c55b870a887d53 | [log] [tgz] |
|---|---|---|
| author | Johannes Weiner <[email protected]> | Mon Sep 21 17:01:48 2009 -0700 |
| committer | Linus Torvalds <[email protected]> | Tue Sep 22 07:17:30 2009 -0700 |
| tree | e2e9de6e7c1fb4f79c0413a3c4d401ec9263b722 | |
| parent | bf88c8c83e4425d17e29daa5354ffb1f8ba7b225 [diff] |
mm: perform non-atomic test-clear of PG_mlocked on free By the time PG_mlocked is cleared in the page freeing path, nobody else is looking at our page->flags anymore. It is thus safe to make the test-and-clear non-atomic and thereby removing an unnecessary and expensive operation from a hotpath. Signed-off-by: Johannes Weiner <[email protected]> Reviewed-by: Christoph Lameter <[email protected]> Reviewed-by: KOSAKI Motohiro <[email protected]> Cc: Christoph Lameter <[email protected]> Cc: Mel Gorman <[email protected]> Cc: Nick Piggin <[email protected]> Signed-off-by: Andrew Morton <[email protected]> Signed-off-by: Linus Torvalds <[email protected]>