NeilBrown a8c906ca3f md/raid5 - avoid deadlocks in get_active_stripe during reshape ... md has functionality to 'quiesce' and array so that all pending IO completed and no new IO starts. This is used to achieve a stable state before making internal changes. Currently this quiescing applies equally to normal IO, resync IO, and reshape IO. However there is a problem with applying it to reshape IO. Reshape can have multiple 'stripe_heads' that must be active together. If the quiesce come between allocating the first and the last of such a collection, then we deadlock, as the last will not be allocated until the quiesce is lifted, the quiesce will not be lifted until the first (which has been allocated) gets used, and that first cannot be used until the last is allocated. It is not necessary to inhibit reshape IO when a quiesce is requested. Those places in the code that require a full quiesce will ensure the reshape thread is not running at all. So allow reshape requests to get access to new stripe_heads without being blocked by a 'quiesce'. This only affects in-place reshapes (i.e. where the array does not grow or shrink) and these are only newly supported. So this patch is not needed in earlier kernels. Signed-off-by: NeilBrown <neilb@suse.de>		2009-06-09 14:39:59 +10:00
..
accessibility
acpi	Merge branches 'bugzilla-13121+', 'bugzilla-13233', 'redhat-bugzilla-500311', 'pci-bind-oops', 'misc-2.6.30' and 'i7300_idle' into release	2009-05-29 21:30:01 -04:00
amba
ata	[libata] pata_ali: Use IGN_SIMPLEX	2009-06-05 17:10:54 -04:00
atm
auxdisplay
base	Driver Core: do not oops when driver_unregister() is called for unregistered drivers	2009-05-28 14:24:07 -07:00
block	xen/blkfront: fix warning when deleting gendisk on unplug/shutdown	2009-05-19 08:27:42 +02:00
bluetooth
cdrom	cdrom: beyond ARRAY_SIZE of viocd_diskinfo	2009-05-20 08:42:06 +02:00
char	drivers/char/mem.c: avoid OOM lockup during large reads from /dev/zero	2009-06-04 15:20:39 -07:00
clocksource	clocksource: pass clocksource to read() callback	2009-04-21 13:41:47 -07:00
connector
cpufreq	[CPUFREQ] fix timer teardown in ondemand governor	2009-05-26 12:04:50 -04:00
cpuidle
crypto	Merge git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6	2009-05-17 15:48:05 -07:00
dca
dio
dma	Merge branch 'release' of git://git.kernel.org/pub/scm/linux/kernel/git/lenb/linux-acpi-2.6	2009-05-30 07:57:44 -07:00
edac	edac: AMD8111 & AMD8131 Kconfig fixup	2009-05-29 08:40:03 -07:00
eisa
firewire
firmware	ibft: fix the display of a few fields in the NIC attribute structure in sysfs	2009-05-02 15:36:10 -07:00
gpio
gpu	Revert "drm: don't associate _DRM_DRIVER maps with a master"	2009-06-05 10:21:52 -07:00
hid	HID: add NOGET quirk for devices from CH Products	2009-05-11 17:09:21 +02:00
hwmon	hwmon: (lm78) Add missing __devexit_p()	2009-06-01 13:46:49 +02:00
i2c	Merge branch 'i2c-for-2630-rc5' of git://aeryn.fluff.org.uk/bjdooks/linux	2009-05-12 11:21:51 -07:00
ide	ide_pci_generic: add quirk for Netcell ATA RAID	2009-05-30 20:06:54 +02:00
idle	i7300_idle: allow testing on i5000-series hardware w/o re-compile	2009-05-28 20:52:40 -04:00
ieee1394
infiniband	Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/roland/infiniband	2009-05-13 16:31:12 -07:00
input	Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input	2009-05-29 08:48:25 -07:00
isdn	gigaset: beyond ARRAY_SIZE of iwb->data	2009-05-21 15:04:15 -07:00
leds
lguest	lguest: fix on Intel when KVM loaded (unhandled trap 13)	2009-05-26 12:13:11 -07:00
macintosh	Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/bart/ide-2.6	2009-04-24 08:16:05 -07:00
mca
md	md/raid5 - avoid deadlocks in get_active_stripe during reshape	2009-06-09 14:39:59 +10:00
media	ivtv: Fix PCI DMA direction	2009-06-05 08:05:23 -07:00
memstick
message	scsi: mpt: suppress debugobjects warning	2009-04-21 13:41:50 -07:00
mfd	mfd: pcf50633: fix unsafe disable_irq()	2009-05-19 22:22:28 +02:00
misc	[SCSI] ses: fix problems caused by empty SES provided name	2009-05-15 12:20:57 -04:00
mmc	[ARM] 5519/1: amba probe: pass "struct amba_id *" instead of void *	2009-05-20 23:26:51 +01:00
mtd	mtd: davinci nand: update clock naming	2009-06-05 11:54:17 -07:00
net	e1000: add missing length check to e1000 receive routine	2009-06-02 01:29:58 -07:00
nubus
of
oprofile	oprofile: fix cpu buffer size	2009-05-07 17:28:59 +02:00
parisc
parport	parport: quickfix the proc registration bug	2009-06-02 09:53:22 -07:00
pci	PCI: use fixed-up device class when configuring device	2009-06-04 11:29:43 +01:00
pcmcia	[ARM] 5458/1: pcmcia: pxa2xx-sharpsl: check if we do have Scoop config	2009-04-23 23:25:40 +01:00
platform	eeepc-laptop: unregister_rfkill_notifier on failure	2009-05-14 11:28:27 -04:00
pnp	ACPI: suspend: don't let device _PS3 failure prevent suspend	2009-05-08 00:22:29 -04:00
power
ps3
rapidio
regulator	regulator: da903x: add missing __devexit_p()	2009-05-18 11:21:10 +01:00
rtc	[ARM] 5519/1: amba probe: pass "struct amba_id *" instead of void *	2009-05-20 23:26:51 +01:00
s390	[SCSI] zfcp: Fix oops when port disappears	2009-04-27 10:07:37 -05:00
sbus
scsi	[SCSI] mpt2sas: fix driver version inconsistency	2009-05-18 14:17:17 -05:00
serial	8250: Fix oops from setserial	2009-05-29 08:42:38 -07:00
sh
sn
spi	pxa2xx_spi: prevent panic case setup() fails	2009-05-12 14:11:34 -07:00
ssb
staging	Staging: comedi: David doesn't want to get comedi patches	2009-05-08 19:39:28 -07:00
tc
telephony
thermal	thermal: fix off-by-1 error in trip point trigger condition	2009-05-14 13:40:53 -04:00
uio
usb	Revert "USB: Correct Makefile to make isp1760 buildable"	2009-05-28 13:54:43 -07:00
uwb
video	atmel_lcdfb: correct fifo size for some products	2009-05-29 08:40:03 -07:00
virtio	virtio: fix suspend when using virtio_balloon	2009-04-19 23:14:01 +09:30
w1
watchdog	[ARM] 5460/1: Orion: reduce namespace pollution	2009-04-23 23:25:41 +01:00
xen	[IA64] xen_domu_defconfig: fix build issues/warnings	2009-05-05 11:43:13 -07:00
zorro
Kconfig
Makefile	V4L/DVB (11561a): move media after i2c	2009-04-29 15:41:13 -03:00