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48cf6061b3
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Laurent Vivier 48cf6061b3 NBD: allow nbd to be used locally 
This patch allows Network Block Device to be mounted locally (nbd-client to
nbd-server over 127.0.0.1).

It creates a kthread to avoid the deadlock described in NBD tools
documentation.  So, if nbd-client hangs waiting for pages, the kblockd thread
can continue its work and free pages.

I have tested the patch to verify that it avoids the hang that always occurs
when writing to a localhost nbd connection.  I have also tested to verify that
no performance degradation results from the additional thread and queue.

Patch originally from Laurent Vivier.

Signed-off-by: Paul Clements <paul.clements@steeleye.com>
Signed-off-by: Laurent Vivier <Laurent.Vivier@bull.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-04-29 08:06:23 -07:00
..
acorn/char
acpi acpi: use non-racy method for proc entries creation 2008-04-29 08:06:22 -07:00
amba
ata typo in sata_fsl 2008-04-28 10:03:31 -07:00
atm drivers: atm, char fix integer as NULL pointer warnings 2008-04-28 17:29:18 -07:00
auxdisplay
base firmware loader: printk when requesting firmware 2008-04-29 08:06:05 -07:00
block NBD: allow nbd to be used locally 2008-04-29 08:06:23 -07:00
bluetooth
cdrom drivers: use non-racy method for proc entries creation (2) 2008-04-29 08:06:22 -07:00
char drivers: use non-racy method for proc entries creation 2008-04-29 08:06:22 -07:00
clocksource
connector
cpufreq [CPUFREQ] fix show_trans_table 2008-04-28 15:05:44 -04:00
cpuidle
crypto
dca
dio
dma
edac
eisa
firewire
firmware edd: add default mode CONFIG_EDD_OFF=n, override with edd={on,off} 2008-04-29 08:06:23 -07:00
gpio gpiochip_reserve() 2008-04-28 08:58:34 -07:00
hid usbhid endianness annotations and fixes 2008-04-28 10:03:31 -07:00
hwmon
i2c
ide drivers: use non-racy method for proc entries creation (2) 2008-04-29 08:06:22 -07:00
ieee1394 Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ieee1394/linux1394-2.6 2008-04-25 12:24:06 -07:00
infiniband IB: expand ib_umem_get() prototype 2008-04-29 08:06:12 -07:00
input drivers: use non-racy method for proc entries creation (2) 2008-04-29 08:06:22 -07:00
isdn isdn: use non-racy method for proc entries creation 2008-04-29 08:06:22 -07:00
leds leds: Add default-on trigger 2008-04-25 00:06:52 +01:00
lguest
macintosh mac-hid: fix build after lockdep annotation 2008-04-25 18:57:09 -07:00
mca proc: remove proc_root from drivers 2008-04-29 08:06:18 -07:00
md drivers: use non-racy method for proc entries creation (2) 2008-04-29 08:06:22 -07:00
media drivers: use non-racy method for proc entries creation (2) 2008-04-29 08:06:22 -07:00
memstick
message drivers: use non-racy method for proc entries creation (2) 2008-04-29 08:06:22 -07:00
mfd mfd: use shorter set_current_state() 2008-04-28 08:58:32 -07:00
misc drivers: use non-racy method for proc entries creation (2) 2008-04-29 08:06:22 -07:00
mmc
mtd drivers: fix integer as NULL pointer warnings 2008-04-28 17:31:13 -07:00
net netdev: use non-racy method for proc entries creation 2008-04-29 08:06:22 -07:00
nubus proc: convert /proc/bus/nubus to seq_file interface 2008-04-29 08:06:19 -07:00
of
oprofile oprofile: change cpu_buffer from array to per_cpu variable 2008-04-28 08:58:31 -07:00
parisc parisc: use non-racy method for proc entries creation 2008-04-29 08:06:22 -07:00
parport
pci drivers: use non-racy method for proc entries creation (2) 2008-04-29 08:06:22 -07:00
pcmcia ARM: always select HAVE_IDE 2008-04-28 23:44:43 +02:00
pnp drivers: use non-racy method for proc entries creation (2) 2008-04-29 08:06:22 -07:00
power x86: olpc: add One Laptop Per Child architecture support 2008-04-29 08:06:07 -07:00
ps3
rapidio
rtc drivers: use non-racy method for proc entries creation (2) 2008-04-29 08:06:22 -07:00
s390 s390: use non-racy method for proc entries creation 2008-04-29 08:06:21 -07:00
sbus
scsi scsi: use non-racy method for proc entries creation 2008-04-29 08:06:21 -07:00
serial Merge branch 'upstream' of git://ftp.linux-mips.org/pub/scm/upstream-linus 2008-04-28 10:51:43 -07:00
sh
sn
spi spi: spi_imx updates 2008-04-28 08:58:31 -07:00
ssb
tc
telephony
thermal
uio
usb usb: use non-racy method for proc entries creation 2008-04-29 08:06:21 -07:00
video proc: remove proc_root from drivers 2008-04-29 08:06:18 -07:00
virtio
w1
watchdog
xen xen: add balloon driver 2008-04-24 23:57:33 +02:00
zorro zorro: use non-racy method for proc entries creation 2008-04-29 08:06:21 -07:00
Kconfig xen: add balloon driver 2008-04-24 23:57:33 +02:00
Makefile