NeilBrown 8311c29d40 md: reduce CPU wastage on idle md array with a write-intent bitmap ... On an md array with a write-intent bitmap, a thread wakes up every few seconds and scans the bitmap looking for work to do. If the array is idle, there will be no work to do, but a lot of scanning is done to discover this. So cache the fact that the bitmap is completely clean, and avoid scanning the whole bitmap when the cache is known to be clean. 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>		2008-03-04 16:35:17 -08:00
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raid6test	md: raid6: clean up the style of raid6test/test.c	2008-02-06 10:41:18 -08:00
.gitignore	gitignore: misc files	2006-01-01 22:21:50 +01:00
bitmap.c	md: reduce CPU wastage on idle md array with a write-intent bitmap	2008-03-04 16:35:17 -08:00
dm-bio-list.h	dm: bio_list macro renaming	2007-10-20 02:01:11 +01:00
dm-bio-record.h	Linux-2.6.12-rc2	2005-04-16 15:20:36 -07:00
dm-crypt.c	dm crypt: use async crypto	2008-02-08 02:11:14 +00:00
dm-delay.c	dm: bio_list macro renaming	2007-10-20 02:01:11 +01:00
dm-emc.c	dm mpath: emc fix an error message	2007-10-20 02:01:12 +01:00
dm-exception-store.c	dm snapshot: use uninitialized_var	2008-02-08 02:10:11 +00:00
dm-hw-handler.c	dm: use kzalloc	2007-10-20 02:01:07 +01:00
dm-hw-handler.h	dm mpath: add retry pg init	2007-10-20 02:01:18 +01:00
dm-io.c	Drop 'size' argument from bio_endio and bi_end_io	2007-10-10 09:25:57 +02:00
dm-io.h	dm io: remove old interface	2007-05-09 12:30:47 -07:00
dm-ioctl.c	dm ioctl: use uninitialized_var	2008-02-08 02:10:16 +00:00
dm-linear.c	[PATCH] dm: map and endio symbolic return codes	2006-12-08 08:29:09 -08:00
dm-log.c	dm log: auto load modules	2008-02-08 02:11:19 +00:00
dm-log.h	dm log: split suspend	2007-10-20 02:01:21 +01:00
dm-mpath-hp-sw.c	dm mpath: hp retry if not ready	2007-10-20 02:01:20 +01:00
dm-mpath-rdac.c	dm mpath: rdac fix init race	2007-10-20 02:00:57 +01:00
dm-mpath.c	dm mpath: add missing static	2008-02-08 02:10:35 +00:00
dm-mpath.h	[PATCH] struct path: rename DM's struct path	2006-12-08 08:28:40 -08:00
dm-path-selector.c	dm: use kzalloc	2007-10-20 02:01:07 +01:00
dm-path-selector.h	[PATCH] struct path: rename DM's struct path	2006-12-08 08:28:40 -08:00
dm-raid1.c	dm-raid1.c: fix NULL dereferences	2008-02-19 15:52:27 -08:00
dm-round-robin.c	dm: remove duplicate module name from error msgs	2007-07-12 15:01:08 -07:00
dm-snap.c	dm snapshot: combine consecutive exceptions in memory	2008-02-08 02:11:27 +00:00
dm-snap.h	dm snapshot: combine consecutive exceptions in memory	2008-02-08 02:11:27 +00:00
dm-stripe.c	dm: stripe enhanced status return	2008-02-08 02:11:24 +00:00
dm-table.c	Introduce path_put()	2008-02-14 21:13:33 -08:00
dm-target.c	dm: use kzalloc	2007-10-20 02:01:07 +01:00
dm-uevent.c	dm: uevent generate events	2007-10-20 02:01:26 +01:00
dm-uevent.h	dm: uevent generate events	2007-10-20 02:01:26 +01:00
dm-zero.c	Drop 'size' argument from bio_endio and bi_end_io	2007-10-10 09:25:57 +02:00
dm.c	dm: move deferred bio flushing to workqueue	2008-02-08 02:11:17 +00:00
dm.h	dm: trigger change uevent on rename	2007-12-20 17:32:11 +00:00
faulty.c	md: change ITERATE_RDEV to rdev_for_each	2008-02-06 10:41:19 -08:00
Kconfig	dm: targets no longer experimental	2008-02-08 02:10:32 +00:00
kcopyd.c	kcopyd use mutex instead of semaphore	2007-10-20 02:01:08 +01:00
kcopyd.h	Linux-2.6.12-rc2	2005-04-16 15:20:36 -07:00
linear.c	md: change ITERATE_RDEV to rdev_for_each	2008-02-06 10:41:19 -08:00
Makefile	dm: add uevent to core	2007-10-20 02:01:24 +01:00
md.c	d_path: Make seq_path() use a struct path argument	2008-02-14 21:17:08 -08:00
mktables.c	md: raid6: Fix mktable.c	2008-02-06 10:41:18 -08:00
multipath.c	md: change ITERATE_RDEV to rdev_for_each	2008-02-06 10:41:19 -08:00
raid0.c	md: change ITERATE_RDEV to rdev_for_each	2008-02-06 10:41:19 -08:00
raid1.c	md: fix deadlock in md/raid1 and md/raid10 when handling a read error	2008-03-04 16:35:17 -08:00
raid5.c	md: fix an occasional deadlock in raid5	2008-02-06 10:41:19 -08:00
raid6.h	[PATCH] RAID6 Altivec fix	2005-09-17 11:49:58 -07:00
raid6algos.c	x86 merge fallout: uml	2007-10-29 07:41:32 -07:00
raid6altivec.uc	[PATCH] RAID6 Altivec fix	2005-09-17 11:49:58 -07:00
raid6int.uc	Linux-2.6.12-rc2	2005-04-16 15:20:36 -07:00
raid6mmx.c	x86 merge fallout: uml	2007-10-29 07:41:32 -07:00
raid6recov.c	Linux-2.6.12-rc2	2005-04-16 15:20:36 -07:00
raid6sse1.c	x86 merge fallout: uml	2007-10-29 07:41:32 -07:00
raid6sse2.c	x86 merge fallout: uml	2007-10-29 07:41:32 -07:00
raid6x86.h	x86 merge fallout: uml	2007-10-29 07:41:32 -07:00
raid10.c	md: fix deadlock in md/raid1 and md/raid10 when handling a read error	2008-03-04 16:35:17 -08:00
unroll.pl	Linux-2.6.12-rc2	2005-04-16 15:20:36 -07:00