]> git.baikalelectronics.ru Git - kernel.git/commit
md: reduce CPU wastage on idle md array with a write-intent bitmap
authorNeilBrown <neilb@suse.de>
Mon, 10 Mar 2008 18:43:48 +0000 (11:43 -0700)
committerLinus Torvalds <torvalds@woody.linux-foundation.org>
Tue, 11 Mar 2008 01:01:19 +0000 (18:01 -0700)
commit0ef354c3b33343cbd1256695ff438ed21d8fd43d
treec1843e80b9b4c1de6d7603753679044d6db4c18e
parent3bd68f1223d24c99c99da44672abc4369d9e7e84
md: reduce CPU wastage on idle md array with a write-intent bitmap

Recent patch titled
  Reduce CPU wastage on idle md array with a write-intent bitmap.

would sometimes leave the array with dirty bitmap bits that stay dirty.  A
subsequent write would sort things out so it isn't a big problem, but should
be fixed nonetheless.

We need to make sure that when the bitmap becomes not "allclean", the
daemon_sleep really does get set to a sensible value.

Signed-off-by: Neil Brown <neilb@suse.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
drivers/md/bitmap.c