[PATCH] noop-iosched: kill O(N) merge scan

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Profiling hit rates on merging shows that the last merge hint works
extremely well for most work loads.  So lets kill the linear merge scan in
noop-iosched, so it provides O(1) run time for any operation.

Testing credits go to Ken Chen from Intel.

Signed-off-by: Jens Axboe <axboe@suse.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

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Jens Axboe 2005-05-01 08:59:06 -07:00 • committed by Linus Torvalds

parent 41f11a4fa3

commit 1181c1f923

1 changed files with 3 additions and 24 deletions

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drivers/block/noop-iosched.c

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