Jun'ichi Nomura f4090d8272 SCSI: Fix dm-multipath starvation when scsi host is busy ... commit b7e94a1686 upstream. block congestion control doesn't have any concept of fairness across multiple queues. This means that if SCSI reports the host as busy in the queue congestion control it can result in an unfair starvation situation in dm-mp if there are multiple multipath devices on the same host. For example: http://www.redhat.com/archives/dm-devel/2012-May/msg00123.html The fix for this is to report only the sdev busy state (and ignore the host busy state) in the block congestion control call back. The host is still congested, but the SCSI subsystem will sort out the congestion in a fair way because it knows the relation between the queues and the host. [jejb: fixed up trailing whitespace] Reported-by: Bernd Schubert <bernd.schubert@itwm.fraunhofer.de> Tested-by: Bernd Schubert <bernd.schubert@itwm.fraunhofer.de> Signed-off-by: Jun'ichi Nomura <j-nomura@ce.jp.nec.com> Signed-off-by: James Bottomley <JBottomley@Parallels.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>		2012-06-10 00:32:57 +09:00
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accessibility
acpi	ACPI / PM: Add Sony Vaio VPCCW29FX to nonvs blacklist.	2012-05-21 09:40:05 -07:00
amba
ata	ahci: Detect Marvell 88SE9172 SATA controller	2012-06-01 15:12:55 +08:00
atm
auxdisplay
base	PM / Driver core: leave runtime PM enabled during system shutdown	2012-03-19 08:57:44 -07:00
bcma
block	cciss: Fix scsi tape io with more than 255 scatter gather elements	2012-04-22 16:21:24 -07:00
bluetooth	Bluetooth: Add support for Atheros [04ca:3005]	2012-04-27 09:51:09 -07:00
cdrom	cdrom: use copy_to_user() without the underscores	2012-02-29 16:34:35 -08:00
char	TPM: Zero buffer after copying to userspace	2011-10-03 11:40:58 -07:00
clk
clocksource
connector
cpufreq	powernow-k8: Fix indexing issue	2012-02-13 11:06:13 -08:00
cpuidle
crypto	crypto: mv_cesa requires on CRYPTO_HASH to build	2012-05-21 09:40:03 -07:00
dca
dio
dma	dmaengine: at_hdmac: remove clear-on-read in atc_dostart()	2012-05-07 08:56:33 -07:00
edac	i7core_edac: fixed typo in error count calculation	2011-08-29 13:29:06 -07:00
eisa
firewire	firewire: ohci: fix too-early completion of IR multichannel buffers	2012-04-02 09:27:13 -07:00
firmware	efivars: Improve variable validation	2012-05-07 08:56:38 -07:00
gpio	pch_gpio: Support new device LAPIS Semiconductor ML7831 IOH	2012-05-21 09:40:05 -07:00
gpu	nouveau: nouveau_set_bo_placement takes TTM flags	2012-06-01 15:12:59 +08:00
hid	HID: add more hotkeys in Asus AIO keyboards	2012-04-02 09:27:12 -07:00
hwmon	hwmon: (coretemp) fix oops on cpu unplug	2012-05-07 08:56:39 -07:00
hwspinlock	hwspinlock/core: use a mutex to protect the radix tree	2011-11-11 09:36:31 -08:00
i2c	i2c: davinci: Free requested IRQ in remove	2012-06-01 15:13:01 +08:00
ide	block: add and use scsi_blk_cmd_ioctl	2012-01-25 17:24:54 -08:00
idle	intel_idle: fix API misuse	2012-01-25 17:24:56 -08:00
ieee802154
infiniband	RDMA/cxgb4: Drop peer_abort when no endpoint found	2012-06-01 15:12:54 +08:00
input	Input: ALPS - fix touchpad detection when buttons are pressed	2012-03-12 10:33:00 -07:00
isdn	isdn/gigaset: ratelimit CAPI message dumps	2012-06-01 15:12:53 +08:00
leds	Revert "leds: save the delay values after a successful call to blink_set()"	2011-11-21 14:31:19 -08:00
lguest
macintosh
mca
md	md: using GFP_NOIO to allocate bio for flush request	2012-06-01 15:12:56 +08:00
media	media: uvcvideo: Fix ENUMINPUT handling	2012-06-01 15:13:00 +08:00
memstick
message
mfd	mfd: Clear twl6030 IRQ status register only once	2012-04-13 08:14:08 -07:00
misc	pch_phub: Improve ADE(Address Decode Enable) control	2012-04-22 16:21:42 -07:00
mmc	mmc: sdio: avoid spurious calls to interrupt handlers	2012-06-01 15:13:00 +08:00
mtd	mtd: sm_ftl: fix typo in major number.	2012-06-01 15:12:55 +08:00
net	pch_gbe: memory corruption calling pch_gbe_validate_option()	2012-05-21 09:40:06 -07:00
nfc
nubus
of
oprofile	oprofile: Fix uninitialized memory access when writing to writing to oprofilefs	2012-01-06 14:13:51 -08:00
parisc
parport
pci	PCI: Add quirk for still enabled interrupts on Intel Sandy Bridge GPUs	2012-04-27 09:51:08 -07:00
pcmcia	pcmcia: fix socket refcount decrementing on each resume	2012-02-13 11:06:10 -08:00
platform	sony-laptop: Enable keyboard backlight by default	2012-05-21 09:40:00 -07:00
pnp	PNPACPI: Fix device ref leaking in acpi_pnp_match	2012-04-13 08:14:05 -07:00
power	drivers/power/ds2780_battery.c: fix deadlock upon insertion and removal	2011-11-11 09:36:32 -08:00
pps
ps3
ptp	ptp: Fix clock_getres() implementation	2011-12-21 12:57:36 -08:00
rapidio	rapidio: fix use of non-compatible registers	2011-10-03 11:39:46 -07:00
regulator	regulator: Fix the logic to ensure new voltage setting in valid range	2012-05-21 09:39:58 -07:00
rtc	drivers/rtc/rtc-pl031.c: configure correct wday for 2000-01-01	2012-06-01 15:12:57 +08:00
s390	compat: Re-add missing asm/compat.h include to fix compile breakage on s390	2012-03-19 08:57:59 -07:00
sbus
scsi	SCSI: Fix dm-multipath starvation when scsi host is busy	2012-06-10 00:32:57 +09:00
sfi
sh
sn
spi	spi: Fix device unregistration when unregistering the bus master	2012-04-27 09:51:09 -07:00
ssb	ssb: fix init regression with SoCs	2012-01-06 14:13:48 -08:00
staging	drivers/staging/comedi/comedi_fops.c: add missing vfree	2012-06-01 15:12:54 +08:00
target	target: Fix 16-bit target ports for SET TARGET PORT GROUPS emulation	2012-04-02 09:27:12 -07:00
tc
telephony
thermal
tty	tty: Allow uart_register/unregister/register	2012-06-01 15:12:56 +08:00
uio
usb	xhci: Add new short TX quirk for Fresco Logic host.	2012-06-01 15:12:59 +08:00
uwb	uwb: fix error handling	2012-04-27 09:51:06 -07:00
vhost
video	video:uvesafb: Fix oops that uvesafb try to execute NX-protected page	2012-04-22 16:21:24 -07:00
virtio	virtio-pci: fix use after free	2011-11-21 14:31:14 -08:00
vlynq
w1	drivers/power/ds2780_battery.c: add a nolock function to w1 interface	2011-11-11 09:36:32 -08:00
watchdog	watchdog: hpwdt: clean up set_memory_x call for 32 bit	2012-03-12 10:32:40 -07:00
xen	xen/xenbus: Add quirk to deal with misconfigured backends.	2012-04-27 09:51:05 -07:00
zorro	zorro: Defer device_register() until all devices have been identified	2011-10-03 11:40:57 -07:00
Kconfig
Makefile