diff options
| author |   Nick Piggin <npiggin@suse.de> | 2008-10-18 20:26:57 -0700 |
|---|---|---|
| committer |   Linus Torvalds <torvalds@linux-foundation.org> | 2008-10-20 08:52:31 -0700 |
| commit | f45840b5c128445da70e7ec33adc47b4a12bdaf4 (patch) | |
| tree | 3815a03d12d1c69d71a48c44cd216c3e1e84272a /mm/swapfile.c | |
| parent | mlock: make mlock error return Posixly Correct (diff) | |
| download | linux-dev-f45840b5c128445da70e7ec33adc47b4a12bdaf4.tar.xz linux-dev-f45840b5c128445da70e7ec33adc47b4a12bdaf4.zip | |
mm: pagecache insertion fewer atomics
Setting and clearing the page locked when inserting it into swapcache /
pagecache when it has no other references can use non-atomic page flags
operations because no other CPU may be operating on it at this time.
This saves one atomic operation when inserting a page into pagecache.
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>
Diffstat (limited to 'mm/swapfile.c')
0 files changed, 0 insertions, 0 deletions