tree c511e606275ed31c2a203d40a372fdfbfb9fa913
parent 41f11a4fa378201e902892130b11d78cf7cf8e10
author Jens Axboe <axboe@suse.de> 1114963146 -0700
committer Linus Torvalds <torvalds@ppc970.osdl.org> 1114963146 -0700

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

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>