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authorNick Piggin <npiggin@suse.de>2008-10-18 20:26:57 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2008-10-20 08:52:31 -0700
commitf45840b5c128445da70e7ec33adc47b4a12bdaf4 (patch)
tree3815a03d12d1c69d71a48c44cd216c3e1e84272a /COPYING
parent9978ad583e100945b74e4f33e73317983ea32df9 (diff)
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>
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