kevin/linux
1
Fork 0
Code
943317efdb
linux/drivers
History
Jonathan Brassow 943317efdb dm raid1: clear region outside spinlock 
A clear_region function is permitted to block (in practice, rare) but gets
called in rh_update_states() with a spinlock held.

The bits being marked and cleared by the above functions are used
to update the on-disk log, but are never read directly.  We can
perform these operations outside the spinlock since the
bits are only changed within one thread viz.
   - mark_region in rh_inc()
   - clear_region in rh_update_states().

So, we grab the clean_regions list items via list_splice() within the
spinlock and defer clear_region() until we iterate over the list for
deletion - similar to how the recovered_regions list is already handled.
We then move the flush() call down to ensure it encapsulates the changes
which are done by the later calls to clear_region().

Signed-off-by: Jonathan Brassow <jbrassow@redhat.com>
Signed-off-by: Alasdair G Kergon <agk@redhat.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-07-12 15:01:08 -07:00
..
acorn [PATCH] fix request->cmd == INT cases 2007-07-10 08:03:34 +02:00
acpi PCI: Change all drivers to use pci_device->revision 2007-07-11 16:02:10 -07:00
amba
ata Merge master.kernel.org:/pub/scm/linux/kernel/git/gregkh/pci-2.6 2007-07-12 13:40:57 -07:00
atm PCI: ATM: lanai, change VENDOR to DEVICE 2007-07-11 16:02:10 -07:00
auxdisplay
base sysfs: add parameter "struct bin_attribute *" in .read/.write methods for sysfs binary attributes 2007-07-11 16:09:09 -07:00
block sysfs: kill unnecessary attribute->owner 2007-07-11 16:09:06 -07:00
bluetooth [Bluetooth] Remove the redundant non-seekable llseek method 2007-07-11 06:53:45 +02:00
cdrom Remove legacy CDROM drivers 2007-07-10 08:03:34 +02:00
char Merge master.kernel.org:/pub/scm/linux/kernel/git/davej/agpgart 2007-07-12 13:41:54 -07:00
clocksource PCI: Change all drivers to use pci_device->revision 2007-07-11 16:02:10 -07:00
connector
cpufreq Merge master.kernel.org:/pub/scm/linux/kernel/git/davej/cpufreq 2007-07-12 13:42:43 -07:00
crypto
dio
dma IOATDMA: fix section mismatches 2007-06-28 11:34:53 -07:00
edac
eisa
fc4
firewire firewire: fw-sbp2: fix DMA mapping of management ORBs 2007-07-10 00:07:49 +02:00
firmware sysfs: add parameter "struct bin_attribute *" in .read/.write methods for sysfs binary attributes 2007-07-11 16:09:09 -07:00
hid Merge branches 'debug-module-param' and 'upstream' into for-linus 2007-07-09 14:23:37 +02:00
hwmon hwmon/coretemp: fix a broken error path 2007-06-24 08:59:10 -07:00
i2c Merge master.kernel.org:/pub/scm/linux/kernel/git/gregkh/pci-2.6 2007-07-12 13:40:57 -07:00
ide Merge master.kernel.org:/pub/scm/linux/kernel/git/gregkh/pci-2.6 2007-07-12 13:40:57 -07:00
ieee1394 ieee1394: remove old isochronous ABI 2007-07-10 00:07:41 +02:00
infiniband Merge master.kernel.org:/pub/scm/linux/kernel/git/gregkh/pci-2.6 2007-07-12 13:40:57 -07:00
input sysfs: kill unnecessary attribute->owner 2007-07-11 16:09:06 -07:00
isdn PCI: Change all drivers to use pci_device->revision 2007-07-11 16:02:10 -07:00
kvm
leds
macintosh Merge master.kernel.org:/pub/scm/linux/kernel/git/gregkh/driver-2.6 2007-07-12 13:40:20 -07:00
mca
md dm raid1: clear region outside spinlock 2007-07-12 15:01:08 -07:00
media PCI: Change all drivers to use pci_device->revision 2007-07-11 16:02:10 -07:00
message
mfd SM501: Check SM501 ID register on initialisation 2007-06-24 08:59:11 -07:00
misc sysfs: kill unnecessary attribute->owner 2007-07-11 16:09:06 -07:00
mmc Merge branch 'devel' of master.kernel.org:/home/rmk/linux-2.6-arm 2007-07-12 14:17:12 -07:00
mtd [MIPS] remove LASAT Networks platforms support 2007-07-10 17:33:04 +01:00
net Merge master.kernel.org:/pub/scm/linux/kernel/git/gregkh/pci-2.6 2007-07-12 13:40:57 -07:00
nubus
oprofile
parisc sysfs: kill unnecessary attribute->owner 2007-07-11 16:09:06 -07:00
parport
pci Merge branch 'release' of git://git.kernel.org/pub/scm/linux/kernel/git/aegl/linux-2.6 2007-07-12 13:41:29 -07:00
pcmcia sysfs: add parameter "struct bin_attribute *" in .read/.write methods for sysfs binary attributes 2007-07-11 16:09:09 -07:00
pnp PNP SMCf010 quirk: work around Toshiba Portege 4000 ACPI issues 2007-07-06 10:23:43 -07:00
power [BATTERY] One Laptop Per Child power/battery driver 2007-07-10 11:28:22 +01:00
ps3
rapidio sysfs: add parameter "struct bin_attribute *" in .read/.write methods for sysfs binary attributes 2007-07-11 16:09:09 -07:00
rtc Merge master.kernel.org:/pub/scm/linux/kernel/git/gregkh/driver-2.6 2007-07-12 13:40:20 -07:00
s390 sysfs: add parameter "struct bin_attribute *" in .read/.write methods for sysfs binary attributes 2007-07-11 16:09:09 -07:00
sbus
scsi Merge master.kernel.org:/pub/scm/linux/kernel/git/gregkh/pci-2.6 2007-07-12 13:40:57 -07:00
serial Merge master.kernel.org:/pub/scm/linux/kernel/git/gregkh/pci-2.6 2007-07-12 13:40:57 -07:00
sh
sn
spi sysfs: add parameter "struct bin_attribute *" in .read/.write methods for sysfs binary attributes 2007-07-11 16:09:09 -07:00
tc [MIPS] DEC: Fix modpost warning. 2007-07-12 17:41:07 +01:00
telephony
usb Merge master.kernel.org:/pub/scm/linux/kernel/git/gregkh/pci-2.6 2007-07-12 13:40:57 -07:00
video Merge master.kernel.org:/pub/scm/linux/kernel/git/gregkh/pci-2.6 2007-07-12 13:40:57 -07:00
w1 sysfs: add parameter "struct bin_attribute *" in .read/.write methods for sysfs binary attributes 2007-07-11 16:09:09 -07:00
zorro sysfs: add parameter "struct bin_attribute *" in .read/.write methods for sysfs binary attributes 2007-07-11 16:09:09 -07:00
Kconfig Merge git://git.infradead.org/~dwmw2/battery-2.6 2007-07-10 14:47:59 -07:00
Makefile [BATTERY] Universal power supply class (was: battery class) 2007-07-10 11:25:44 +01:00