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074f4afeb2
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Lars Ellenberg 074f4afeb2 drbd: fix a race between start_resync and send_and_submit 
In the drbd make request function, specifically in
drbd_send_and_submit(), we decide whether we want to send the actual
write request, or only a "set this block out of sync" information.

We do so based on the current connection state, while holding the req_lock.
The connection state is not supposed to change while holding the req_lock.

But in drbd_start_resync, we did change that state anyways,
while only holding the global_state_lock, which is enough to change
sync-after dependencies (paused vs active resync), but
not good enough to change the connection state.

Fix: in drbd_start_resync, first grab the req_lock to serialize with
drbd_send_and_submit(), before grabbing the global_state_lock
to be able to evaluate the sync-after dependencies.

Signed-off-by: Philipp Reisner <philipp.reisner@linbit.com>
Signed-off-by: Lars Ellenberg <lars.ellenberg@linbit.com>
Signed-off-by: Jens Axboe <axboe@fb.com>
2014-04-30 13:46:55 -06:00
..
accessibility
acpi Merge branch 'acpi-config' 2014-04-08 21:34:51 +02:00
amba ARM: SoC: driver changes 2014-04-05 15:37:40 -07:00
ata Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial 2014-04-02 16:23:38 -07:00
atm
auxdisplay
base regmap: Fix for nodev mode 2014-04-11 13:25:08 -07:00
bcma
block drbd: fix a race between start_resync and send_and_submit 2014-04-30 13:46:55 -06:00
bluetooth Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next 2014-04-02 20:53:45 -07:00
bus ARM: SoC: driver changes 2014-04-05 15:37:40 -07:00
cdrom gdrom: missed conversion from req->buffer 2014-04-16 14:15:24 -06:00
char Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs 2014-04-12 14:49:50 -07:00
clk == Changes to existing drivers == 2014-04-07 10:24:18 -07:00
clocksource CPU hotplug notifiers registration fixes for 3.15-rc1 2014-04-07 14:55:46 -07:00
connector Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next 2014-04-02 20:53:45 -07:00
cpufreq Merge branch 'pm-cpufreq' 2014-04-08 13:28:02 +02:00
cpuidle Merge branch 'pm-cpuidle' 2014-04-08 13:27:40 +02:00
crypto Merge git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6 2014-04-03 09:28:16 -07:00
dca
devfreq
dio
dma Merge branch 'for-linus' of git://git.infradead.org/users/vkoul/slave-dma 2014-04-10 08:55:08 -07:00
edac Merge branch 'v4l_for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-media 2014-04-04 09:50:07 -07:00
eisa
extcon
firewire
firmware Merge branch 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip 2014-04-11 11:58:33 -07:00
fmc
gpio == Changes to existing drivers == 2014-04-07 10:24:18 -07:00
gpu Merge branch 'drm-next' of git://people.freedesktop.org/~airlied/linux 2014-04-08 09:52:16 -07:00
hid Merge branch 'v4l_for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-media 2014-04-04 09:50:07 -07:00
hsi
hv Char/Misc driver patches for 3.15-rc1 2014-04-01 16:13:21 -07:00
hwmon Merge branch 'merge' of git://git.kernel.org/pub/scm/linux/kernel/git/benh/powerpc 2014-04-09 08:35:31 -07:00
hwspinlock
i2c Merge branch 'i2c/for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux 2014-04-09 08:45:40 -07:00
ide block: remove struct request buffer member 2014-04-15 14:03:02 -06:00
idle Merge branch 'pm-cpuidle' 2014-04-08 13:27:40 +02:00
iio == Changes to existing drivers == 2014-04-07 10:24:18 -07:00
infiniband Merge branch 'for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/nab/target-pending 2014-04-12 16:51:08 -07:00
input pwm: Changes for v3.15-rc1 2014-04-05 18:32:31 -07:00
iommu IOMMU Upates for Linux v3.15 2014-04-05 18:46:26 -07:00
ipack
irqchip ARM: SoC: driver changes 2014-04-05 15:37:40 -07:00
isdn isdnloop: several buffer overflows 2014-04-08 12:41:13 -04:00
leds Merge branch 'for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/cooloney/linux-leds 2014-04-10 09:06:10 -07:00
lguest drivers/lguest/page_tables.c: rename do_set_pte() 2014-04-07 16:35:52 -07:00
macintosh
mailbox
mcb
md block: remove struct request buffer member 2014-04-15 14:03:02 -06:00
media [media] gpsca: remove the risk of a division by zero 2014-04-08 11:01:12 -03:00
memory
memstick
message PCI changes for the v3.15 merge window: 2014-04-01 15:14:04 -07:00
mfd MMC highlights for 3.15: 2014-04-09 08:39:39 -07:00
misc drivers/misc/sgi-gru/grukdump.c: cleanup gru_dump_context() a little 2014-04-07 16:36:09 -07:00
mmc MMC highlights for 3.15: 2014-04-09 08:39:39 -07:00
mtd block: remove struct request buffer member 2014-04-15 14:03:02 -06:00
net Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2014-04-12 17:31:22 -07:00
nfc
ntb ntb: Use pci_enable_msix_range() instead of pci_enable_msix() 2014-04-07 10:59:20 -07:00
nubus
of MTD updates for 3.15: 2014-04-07 10:17:30 -07:00
oprofile
parisc
parport
pci Nothing major: the stricter permissions checking for sysfs broke 2014-04-06 09:38:07 -07:00
pcmcia PCI changes for the v3.15 merge window: 2014-04-01 15:14:04 -07:00
phy ARM: SoC: driver changes 2014-04-05 15:37:40 -07:00
pinctrl This is the bulk of GPIO changes for v3.15: 2014-04-03 16:44:15 -07:00
platform alienware-wmi: cover some scenarios where memory allocations would fail 2014-04-10 12:11:56 -04:00
pnp More ACPI and power management updates for 3.15-rc1 2014-04-02 14:10:21 -07:00
power
powercap CPU hotplug notifiers registration fixes for 3.15-rc1 2014-04-07 14:55:46 -07:00
pps
ps3
ptp net: ptp: move PTP classifier in its own file 2014-04-01 16:43:18 -04:00
pwm pwm: Changes for v3.15-rc1 2014-04-05 18:32:31 -07:00
rapidio rapidio: rework device hierarchy and introduce mport class of devices 2014-04-07 16:36:07 -07:00
regulator regulator: Fixes for v3.15 2014-04-11 13:30:05 -07:00
remoteproc
reset
rpmsg
rtc ARM: SoC: driver changes 2014-04-05 15:37:40 -07:00
s390 Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux 2014-04-08 12:02:28 -07:00
sbus jsflash: missed conversion from rq->buffer to bio_data(rq->bio) 2014-04-16 14:15:25 -06:00
scsi block: remove struct request buffer member 2014-04-15 14:03:02 -06:00
sfi
sh ARM: SoC: sh driver changes 2014-04-05 15:38:41 -07:00
sn
spi spi: Fixes for v3.15 2014-04-11 13:35:49 -07:00
spmi
ssb
staging Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2014-04-12 17:31:22 -07:00
target Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2014-04-12 17:31:22 -07:00
tc
thermal Merge branch 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/rzhang/linux 2014-04-10 09:15:46 -07:00
tty Merge git://git.infradead.org/users/eparis/audit 2014-04-12 12:38:53 -07:00
uio
usb Merge branch 'for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/nab/target-pending 2014-04-12 16:51:08 -07:00
uwb
vfio VFIO updates for v3.15 include: 2014-04-03 14:05:02 -07:00
vhost Merge branch 'for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/nab/target-pending 2014-04-12 16:51:08 -07:00
video - Call put_device() instead of kfree() - core 2014-04-10 08:52:35 -07:00
virt
virtio
vlynq
vme
w1
watchdog CPU hotplug notifiers registration fixes for 3.15-rc1 2014-04-07 14:55:46 -07:00
xen Fix arm build of drivers/xen/events/ 2014-04-07 17:50:18 -07:00
zorro
Kconfig
Makefile