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
..
acpi	ACPI, cpuidle: Clarify C-state description in sysfs	2008-02-14 00:09:55 -05:00
asm-alpha	CONFIG_HIGHPTE vs. sub-page page tables.	2008-02-08 09:22:42 -08:00
asm-arm	Kprobes: indicate kretprobe support in Kconfig	2008-03-04 16:35:11 -08:00
asm-avr32	AVR32: Define PAGE_SHARED	2008-02-13 14:44:03 +01:00
asm-blackfin	Add pgtable_t to remaining nommu architectures	2008-02-09 11:08:33 -08:00
asm-cris	cris: correct syscall numbers in unistd.h for timerfd_settime and timerfd_gettime	2008-03-04 16:35:16 -08:00
asm-frv	FRV: Change the timerfd syscalls to be the same as i386	2008-02-20 19:58:16 -08:00
asm-generic	percpu: fix DEBUG_PREEMPT per_cpu checking	2008-02-23 12:09:28 -08:00
asm-h8300	h8300: IRQ handling update	2008-02-23 17:12:16 -08:00
asm-ia64	Kprobes: indicate kretprobe support in Kconfig	2008-03-04 16:35:11 -08:00
asm-m32r	CONFIG_HIGHPTE vs. sub-page page tables.	2008-02-08 09:22:42 -08:00
asm-m68k	m68k{,nommu}: Wire up new timerfd syscalls	2008-03-04 08:04:11 -08:00
asm-m68knommu	m68k{,nommu}: Wire up new timerfd syscalls	2008-03-04 08:04:11 -08:00
asm-mips	Alchemy: compile fix	2008-02-24 20:03:42 +01:00
asm-mn10300	MN10300: define SO_MARK	2008-02-23 17:12:13 -08:00
asm-parisc	CONFIG_HIGHPTE vs. sub-page page tables.	2008-02-08 09:22:42 -08:00
asm-powerpc	Kprobes: indicate kretprobe support in Kconfig	2008-03-04 16:35:11 -08:00
asm-ppc	[POWERPC] Fix arch/ppc compilation - add typedef for pgtable_t	2008-02-14 22:11:02 +11:00
asm-s390	Kprobes: indicate kretprobe support in Kconfig	2008-03-04 16:35:11 -08:00
asm-sh	serial: Move asm-sh/sci.h to linux/serial_sci.h.	2008-02-26 14:52:45 +09:00
asm-sparc	[SPARC]: Merge asm-sparc{,64}/a.out.h	2008-02-09 22:25:50 -08:00
asm-sparc64	Kprobes: indicate kretprobe support in Kconfig	2008-03-04 16:35:11 -08:00
asm-um	uml: x86_64 should copy %fs during fork	2008-02-08 09:22:43 -08:00
asm-v850	Add pgtable_t to remaining nommu architectures	2008-02-09 11:08:33 -08:00
asm-x86	Kprobes: indicate kretprobe support in Kconfig	2008-03-04 16:35:11 -08:00
asm-xtensa	[XTENSA] Allow debugger to modify the WINDOWBASE register.	2008-02-13 17:45:36 -08:00
crypto
keys
linux	md: reduce CPU wastage on idle md array with a write-intent bitmap	2008-03-04 16:35:17 -08:00
math-emu
media	V4L/DVB (7192): Adds support for Genius TVGo A11MCE	2008-02-18 11:15:19 -03:00
mtd	Merge git://git.infradead.org/~dedekind/ubi-2.6	2008-02-03 22:07:40 +11:00
net	[SCTP]: Update AUTH structures to match declarations in draft-16.	2008-02-28 16:45:04 -05:00
pcmcia	pcmcia: replace kio_addr_t with unsigned int everywhere	2008-02-05 09:44:08 -08:00
rdma	IB/core: Remove unused struct ib_device.flags member	2008-02-08 14:47:26 -08:00
rxrpc
scsi	[SCSI] update SG_ALL to avoid causing chaining	2008-02-11 13:40:13 -06:00
sound	[ALSA] opl3 - Fix compilation without sequencer support	2008-02-22 14:20:08 -08:00
video	atmel_lcdfb: backlight control	2008-02-06 10:41:16 -08:00
xen	x86: page.h: make pte_t a union to always include	2008-01-30 13:32:57 +01:00
Kbuild