mm: pagecache insertion fewer atomics

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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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Nick Piggin 2008-10-18 20:26:57 -07:00 • committed by Linus Torvalds

parent 9978ad583e

commit f45840b5c1

2 changed files with 9 additions and 9 deletions

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14

include/linux/pagemap.h

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