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authorNikita Danilov <nikita@clusterfs.com>2006-01-06 00:11:08 -0800
committerLinus Torvalds <torvalds@g5.osdl.org>2006-01-06 08:33:26 -0800
commitbbfbb7cec9dd7266534b2b4b9c8be2fa425bbfc9 (patch)
treed1949123224d1674a7192743d188ff652c964663 /include
parenta226f6c899799fe2c4919daa0767ac579c88f7bd (diff)
[PATCH] find_lock_page(): call __lock_page() directly.
As find_lock_page() already checks with TestSetPageLocked() that page is locked, there is no need to call lock_page() that will try-lock page again (chances of page being unlocked in between are small). Call __lock_page() directly, this saves one atomic operation. Also, mark truncate-while-slept path as unlikely while we are here. (akpm: ug. But this is actually a common path for normal old read()s against a page which is under readahead I/O so ho-hum.) Signed-off-by: Nikita Danilov <danilov@gmail.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
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