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| 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/vmscan.c | |
| parent | 9978ad583e100945b74e4f33e73317983ea32df9 (diff) | |
| download | lwn-f45840b5c128445da70e7ec33adc47b4a12bdaf4.tar.gz lwn-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/vmscan.c')
0 files changed, 0 insertions, 0 deletions