Mikulas Patocka 35bf659b00 dm snapshot: avoid having two exceptions for the same chunk ... We need to check if the exception was completed after dropping the lock. After regaining the lock, __find_pending_exception checks if the exception was already placed into &s->pending hash. But we don't check if the exception was already completed and placed into &s->complete hash. If the process waiting in alloc_pending_exception was delayed at this point because of a scheduling latency and the exception was meanwhile completed, we'd miss that and allocate another pending exception for already completed chunk. It would lead to a situation where two records for the same chunk exist and potential data corruption because multiple snapshot I/Os to the affected chunk could be redirected to different locations in the snapshot. Cc: stable@kernel.org Signed-off-by: Mikulas Patocka <mpatocka@redhat.com> Signed-off-by: Alasdair G Kergon <agk@redhat.com>		2009-04-02 19:55:26 +01:00
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accessibility	…
acpi	Merge branch 'linux-next' of git://git.kernel.org/pub/scm/linux/kernel/git/jbarnes/pci-2.6	2009-04-01 09:47:12 -07:00
amba	amba: struct device - replace bus_id with dev_name(), dev_set_name()	2009-03-24 16:38:22 -07:00
ata	Merge branch 'origin' into devel	2009-03-28 20:29:51 +00:00
atm	atm: fix non-const printk argument	2009-03-21 19:06:51 -07:00
auxdisplay	auxdisplay: remove PARPORT dependency	2009-04-01 08:59:17 -07:00
base	Merge git://git.kernel.org/pub/scm/linux/kernel/git/rusty/linux-2.6-cpumask	2009-03-30 18:00:26 -07:00
block	loop: add ioctl to resize a loop device	2009-04-01 08:59:17 -07:00
bluetooth	Bluetooth: Remove some pointless conditionals before kfree_skb()	2009-02-27 06:14:50 +01:00
cdrom	…
char	Merge branch 'for-linus' of git://git390.marist.edu/pub/scm/linux-2.6	2009-04-01 09:22:24 -07:00
clocksource	Merge branch 'core/percpu' into percpu-cpumask-x86-for-linus-2	2009-03-27 17:28:43 +01:00
connector	connector: create connector workqueue only while needed once	2009-02-02 23:22:04 -08:00
cpufreq	Merge branch 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/davej/cpufreq	2009-03-26 11:04:08 -07:00
cpuidle	cpuidle: Add decaying history logic to menu idle predictor	2008-12-30 18:48:01 -05:00
crypto	Merge git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6	2009-03-26 11:04:34 -07:00
dca	Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6	2009-03-23 09:25:58 -07:00
dio	dio: struct device - replace bus_id with dev_name(), dev_set_name()	2009-03-24 16:38:22 -07:00
dma	Merge branch 'origin' into devel	2009-03-28 20:29:51 +00:00
edac	edac: struct device - replace bus_id with dev_name(), dev_set_name()	2009-03-24 16:38:21 -07:00
eisa	Merge branch 'core/percpu' into percpu-cpumask-x86-for-linus-2	2009-03-27 17:28:43 +01:00
firewire	firewire: core: optimize propagation of BROADCAST_CHANNEL	2009-03-24 20:56:52 +01:00
firmware	dmi: Let dmi_walk() users pass private data	2009-03-30 21:46:44 +02:00
gpio	gpio: struct device - replace bus_id with dev_name(), dev_set_name()	2009-03-24 16:38:23 -07:00
gpu	drm: detect hdmi monitor by hdmi identifier (v3)	2009-03-29 18:31:49 +10:00
hid	Merge branch 'bkl-removal' of git://git.lwn.net/linux-2.6	2009-03-26 16:14:02 -07:00
hwmon	lis3: SPI transport layer	2009-04-01 08:59:22 -07:00
i2c	Merge branch 'hwmon-for-linus' of git://jdelvare.pck.nerim.net/jdelvare-2.6	2009-03-30 17:54:32 -07:00
ide	ide-floppy: do not complete rq's prematurely	2009-03-31 20:15:34 +02:00
idle	i7300_idle: struct device - replace bus_id with dev_name(), dev_set_name()	2009-01-06 10:44:39 -08:00
ieee1394	Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ieee1394/linux1394-2.6	2009-03-27 18:33:56 -07:00
infiniband	Merge git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi-misc-2.6	2009-03-28 13:30:43 -07:00
input	proc 2/2: remove struct proc_dir_entry::owner	2009-03-31 01:14:44 +04:00
isdn	proc tty: remove struct tty_operations::read_proc	2009-04-01 08:59:10 -07:00
leds	…
lguest	lguest: use bool instead of int	2009-03-30 21:55:25 +10:30
macintosh	therm_adt746x: Fix signed/unsigned confusion	2009-02-11 16:00:07 +11:00
mca	mca: struct device - replace bus_id with dev_name(), dev_set_name()	2009-03-24 16:38:23 -07:00
md	dm snapshot: avoid having two exceptions for the same chunk	2009-04-02 19:55:26 +01:00
media	proc 2/2: remove struct proc_dir_entry::owner	2009-03-31 01:14:44 +04:00
memstick	…
message	proc 2/2: remove struct proc_dir_entry::owner	2009-03-31 01:14:44 +04:00
mfd	mfd: struct device - replace bus_id with dev_name(), dev_set_name()	2009-03-24 16:38:23 -07:00
misc	drivers/misc/isl29003.c: driver for the ISL29003 ambient light sensor	2009-04-01 08:59:18 -07:00
mmc	proc tty: switch sdio_uart to ->proc_fops	2009-04-01 08:59:09 -07:00
mtd	Merge branch 'devel' of master.kernel.org:/home/rmk/linux-2.6-arm	2009-03-28 14:03:14 -07:00
net	Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6	2009-03-30 18:46:43 -07:00
nubus	nubus: fix mis-indented statement	2008-10-16 11:21:30 -07:00
of	powerpc: add mmc-spi-slot bindings	2009-04-01 08:59:23 -07:00
oprofile	oprofile: Thou shalt not call __exit functions from __init functions	2009-03-30 22:05:18 +10:30
parisc	…
parport	…
pci	Merge branch 'linux-next' of git://git.kernel.org/pub/scm/linux/kernel/git/jbarnes/pci-2.6	2009-04-01 09:47:12 -07:00
pcmcia	Merge branch 'origin' into devel	2009-03-28 20:29:51 +00:00
platform	Merge branch 'hwmon-for-linus' of git://jdelvare.pck.nerim.net/jdelvare-2.6	2009-03-30 17:54:32 -07:00
pnp	Merge branch 'linus' into release	2009-01-09 03:39:43 -05:00
power	…
ps3	powerpc/ps3: Make ps3av_set_video_mode mode ID signed	2009-03-11 17:10:17 +11:00
rapidio	rapidio: struct device - replace bus_id with dev_name(), dev_set_name()	2009-03-24 16:38:21 -07:00
regulator	leds: Fix bounds checking of wm8350->pmic.led	2009-01-30 21:50:49 +00:00
rtc	rtc: test before subtraction on unsigned	2009-04-01 08:59:26 -07:00
s390	qeth: properly delete empty files.	2009-04-01 12:51:33 -07:00
sbus	…
scsi	proc 2/2: remove struct proc_dir_entry::owner	2009-03-31 01:14:44 +04:00
serial	serial: fixup /proc/tty/driver/serial after proc_fops conversion	2009-04-01 14:50:48 -07:00
sh	maple: fix Error in kernel-doc notation	2009-03-29 08:12:39 -07:00
sn	…
spi	spi_mpc83xx: add OF platform driver bindings	2009-04-01 08:59:22 -07:00
ssb	b43: Add BCM4307 PCI-ID	2009-03-27 20:13:20 -04:00
staging	Merge branch 'topic/snd_card_new-err' into for-linus	2009-03-24 00:35:35 +01:00
tc	tc: struct device - replace bus_id with dev_name(), dev_set_name()	2009-03-24 16:38:22 -07:00
telephony	…
thermal	…
uio	UIO: Take offset into account when determining number of pages that can be mapped	2009-03-24 16:38:25 -07:00
usb	proc tty: switch usb-serial to ->proc_fops	2009-04-01 08:59:10 -07:00
uwb	uwb: lock rc->rsvs_lock with spin_lock_bh()	2009-01-23 12:57:20 +00:00
video	efifb: dmi set video type	2009-04-01 08:59:34 -07:00
virtio	virtio: more neatening of virtio_ring macros.	2009-03-30 21:55:23 +10:30
w1	Merge branch 'for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap-2.6 into devel	2009-03-25 18:31:35 +00:00
watchdog	Merge branch 'hwmon-for-linus' of git://jdelvare.pck.nerim.net/jdelvare-2.6	2009-03-30 17:54:32 -07:00
xen	PM: Rework handling of interrupts during suspend-resume	2009-03-30 21:46:54 +02:00
zorro	zorro: struct device - replace bus_id with dev_name(), dev_set_name()	2009-03-24 16:38:21 -07:00
Kconfig	…
Makefile	ide/net: flip the order of SATA and network init	2009-03-28 13:06:16 -07:00