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NeilBrown dd00a99e7a md: avoid a possibility that a read error can wrongly propagate through md/raid1 to a filesystem. 
When a raid1 has only one working drive, we want read error to propagate up
to the filesystem as there is no point failing the last drive in an array.

Currently the code perform this check is racy.  If a write and a read a
both submitted to a device on a 2-drive raid1, and the write fails followed
by the read failing, the read will see that there is only one working drive
and will pass the failure up, even though the one working drive is actually
the *other* one.

So, tighten up the locking.

Signed-off-by: Neil Brown <neilb@suse.de>
Cc: <stable@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
 		2007-05-10 09:26:53 -07:00
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acorn
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acpi PM: Separate hibernation code from suspend code 2007-05-09 12:30:48 -07:00
amba
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ata libata: fix kernel-doc parameters 2007-05-09 20:15:47 -04:00
atm PCI: Cleanup the includes of <linux/pci.h> 2007-05-02 19:02:35 -07:00
auxdisplay
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base Merge git://git.kernel.org/pub/scm/linux/kernel/git/bunk/trivial 2007-05-09 12:54:17 -07:00
block Merge git://git.kernel.org/pub/scm/linux/kernel/git/bunk/trivial 2007-05-09 12:54:17 -07:00
bluetooth [Bluetooth] Correct SCO buffer for another Broadcom based dongle 2007-05-05 00:36:22 +02:00
cdrom mm: remove destroy_dirty_buffers from invalidate_bdev() 2007-05-07 12:12:55 -07:00
char Merge git://git.kernel.org/pub/scm/linux/kernel/git/aegl/linux-2.6 2007-05-09 13:38:45 -07:00
clocksource
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connector
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cpufreq Add suspend-related notifications for CPU hotplug 2007-05-09 12:30:56 -07:00
crypto Fix trivial typos in Kconfig* files 2007-05-09 07:12:20 +02:00
dio
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dma
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edac Fix 82875 PCI setup 2007-05-08 11:15:07 -07:00
eisa virtual_eisa_root_init() should be __init 2007-05-08 11:15:02 -07:00
fc4
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firmware remove "struct subsystem" as it is no longer needed 2007-05-02 18:57:59 -07:00
hid header cleaning: don't include smp_lock.h when not used 2007-05-08 11:15:07 -07:00
hwmon drivers/hwmon: switch to using input_dev->dev.parent 2007-05-10 09:26:53 -07:00
i2c arm: fix i2c-pxa build 2007-05-10 09:26:52 -07:00
ide Merge master.kernel.org:/pub/scm/linux/kernel/git/bart/ide-2.6 2007-05-09 15:41:31 -07:00
ieee1394 Fix occurrences of "the the " 2007-05-09 08:57:56 +02:00
infiniband Merge branch 'for-linus' of master.kernel.org:/pub/scm/linux/kernel/git/roland/infiniband 2007-05-09 19:40:09 -07:00
input Merge master.kernel.org:/pub/scm/linux/kernel/git/dtor/input 2007-05-08 11:51:43 -07:00
isdn misc doc and kconfig typos 2007-05-09 08:58:15 +02:00
kvm Add suspend-related notifications for CPU hotplug 2007-05-09 12:30:56 -07:00
leds fix file specification in comments 2007-05-09 08:58:16 +02:00
macintosh Merge master.kernel.org:/pub/scm/linux/kernel/git/bart/ide-2.6 2007-05-09 15:41:31 -07:00
mca mca: add integrated device bus matching 2007-05-09 12:30:49 -07:00
md md: avoid a possibility that a read error can wrongly propagate through md/raid1 to a filesystem. 2007-05-10 09:26:53 -07:00
media misc doc and kconfig typos 2007-05-09 08:58:15 +02:00
message misc doc and kconfig typos 2007-05-09 08:58:15 +02:00
mfd header cleaning: don't include smp_lock.h when not used 2007-05-08 11:15:07 -07:00
misc disable socket power in adapter driver instead of media one 2007-05-08 22:41:47 +02:00
mmc mmc build fix 2007-05-09 12:30:44 -07:00
mtd Merge git://git.infradead.org/mtd-2.6 2007-05-09 13:10:11 -07:00
net Merge branch 'for-linus' of master.kernel.org:/pub/scm/linux/kernel/git/roland/infiniband 2007-05-09 19:40:09 -07:00
nubus
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oprofile
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parisc header cleaning: don't include smp_lock.h when not used 2007-05-08 11:15:07 -07:00
parport parport_serial: fix PCI must_checks 2007-05-08 11:15:08 -07:00
pci Fix more "deprecated" spellos. 2007-05-09 07:19:14 +02:00
pcmcia fix hotplug for legacy platform drivers 2007-05-08 11:15:10 -07:00
pnp PNP: workaround HP BIOS defect that leaves SMCF010 device partly enabled 2007-05-08 11:15:23 -07:00
ps3 Merge branch 'linux-2.6' 2007-05-08 13:37:51 +10:00
rapidio
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rtc Merge master.kernel.org:/pub/scm/linux/kernel/git/lethal/sh-2.6 2007-05-09 13:08:20 -07:00
s390 Fix occurrences of "the the " 2007-05-09 08:57:56 +02:00
sbus Fix misspellings collected by members of KJ list. 2007-05-09 07:14:03 +02:00
scsi Merge master.kernel.org:/pub/scm/linux/kernel/git/bart/ide-2.6 2007-05-09 15:41:31 -07:00
serial Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/paulus/powerpc 2007-05-08 11:50:19 -07:00
sh
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sn
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spi atmel_spi: remove unnecessary (and wrong) #ifdefs 2007-05-09 12:30:50 -07:00
tc
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telephony replace pci_find_device in drivers/telephony/ixj.c 2007-05-08 11:15:02 -07:00
usb Move USB network drivers to drivers/net/usb. 2007-05-09 21:31:55 -04:00
video Merge git://git.kernel.org/pub/scm/linux/kernel/git/bunk/trivial 2007-05-09 12:54:17 -07:00
w1 Driver for the Maxim DS1WM, a 1-wire bus master ASIC core 2007-05-08 11:15:14 -07:00
zorro Amiga Zorro bus: kill resource_size_t warnings 2007-05-04 17:59:08 -07:00
Kconfig
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Makefile i2c: Add i2c_board_info and i2c_new_device() 2007-05-01 23:26:31 +02:00