UbiquitousOS
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OpenCloudOS-Kernel
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OpenCloudOS-Kernel/drivers
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Arnd Bergmann 409f3499a2 scsi/sd: remove big kernel lock 
Every user of the BKL in the sd driver is the
result of the pushdown from the block layer
into the open/close/ioctl functions.

The only place that used to rely on the BKL is
the sdkp->openers variable, which gets converted
into an atomic_t.

Nothing else seems to rely on the BKL, since the
functions do not touch global data without holding
another lock, and the open/close functions are
still protected from concurrent execution using
the bdev->bd_mutex.

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Cc: linux-scsi@vger.kernel.org
Cc: "James E.J. Bottomley" <James.Bottomley@suse.de>
Acked-by: Christoph Hellwig <hch@infradead.org>
Signed-off-by: Jens Axboe <jaxboe@fusionio.com>
 		2010-08-07 18:26:08 +02:00
..
accessibility
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acpi Merge branch 'bugzilla-16396' into release 2010-07-24 23:26:22 -04:00
amba
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ata block: unify flags for struct bio and struct request 2010-08-07 18:20:39 +02:00
atm Merge remote branch 'origin' into secretlab/next-devicetree 2010-05-22 00:36:56 -06:00
auxdisplay auxdisplay: section cleanup in cfag12864bfb driver 2010-05-25 08:07:09 -07:00
base Driver-core: Always create class directories for classses that support namespaces. 2010-07-26 08:05:31 -07:00
block block: push down BKL into .open and .release 2010-08-07 18:25:34 +02:00
bluetooth drivers: bluetooth: bluecard_cs.c: Fixed include error, changed to linux/io.h 2010-07-01 21:28:14 -07:00
cdrom block: push down BKL into .open and .release 2010-08-07 18:25:34 +02:00
char Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/anholt/drm-intel 2010-07-26 13:04:25 -07:00
clocksource Andres has moved 2010-07-20 16:25:41 -07:00
connector
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cpufreq [CPUFREQ] fix memory leak in cpufreq_add_dev 2010-07-26 15:25:33 -04:00
cpuidle sched: Cure nr_iowait_cpu() users 2010-07-01 09:39:48 +02:00
crypto crypto: talitos - fix bug in sg_copy_end_to_buffer 2010-07-19 14:11:24 +08:00
dca
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dio
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dma of/dma: fix build breakage in ppc4xx adma driver 2010-07-02 15:46:17 -06:00
edac edac: mpc85xx: fix coldplug/hotplug module autoloading 2010-07-27 14:32:06 -07:00
eisa
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firewire firewire: core: check for 1394a compliant IRM, fix inaccessibility of Sony camcorder 2010-06-02 19:48:13 +02:00
firmware sysfs: add struct file* to bin_attr callbacks 2010-05-21 09:37:31 -07:00
gpio gpio: fix spurious printk when freeing a gpio 2010-07-27 14:32:07 -07:00
gpu drm/edid: Fix the HDTV hack sync adjustment 2010-07-29 16:14:43 +10:00
hid HID: Send Report ID when numbered reports are sent over the control endpoint. 2010-07-11 23:13:15 +02:00
hwmon hwmon: (coretemp) Properly label the sensors 2010-07-09 16:22:51 +02:00
i2c Merge branch 'hwmon-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jdelvare/staging 2010-07-11 13:35:34 -07:00
ide block: push down BKL into .open and .release 2010-08-07 18:25:34 +02:00
idle intel_idle: native hardware cpuidle driver for latest Intel processors 2010-05-28 14:26:20 -04:00
ieee1394 Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ieee1394/linux1394-2.6 2010-05-27 10:22:06 -07:00
ieee802154
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infiniband IB/qib: Use request_firmware() to load SD7220 firmware 2010-07-08 13:27:05 -07:00
input Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input 2010-07-22 11:46:15 -07:00
isdn ISDN: hysdn, fix potential NULL dereference 2010-06-26 22:12:02 -07:00
leds i2c: Remove all i2c_set_clientdata(client, NULL) in drivers 2010-06-03 11:33:58 +02:00
lguest
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macintosh Merge branch 'merge' of git://git.kernel.org/pub/scm/linux/kernel/git/benh/powerpc 2010-06-03 15:46:37 -07:00
mca
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md block: push down BKL into .open and .release 2010-08-07 18:25:34 +02:00
media V4L/DVB: v4l: mem2mem_testdev: fix g_fmt NULL pointer dereference 2010-07-08 16:50:24 -03:00
memstick block: push down BKL into .open and .release 2010-08-07 18:25:34 +02:00
message block: push down BKL into .open and .release 2010-08-07 18:25:34 +02:00
mfd i2c: Remove all i2c_set_clientdata(client, NULL) in drivers 2010-06-03 11:33:58 +02:00
misc Andres has moved 2010-07-20 16:25:41 -07:00
mmc block: push down BKL into .open and .release 2010-08-07 18:25:34 +02:00
mtd block: push down BKL into .open and .release 2010-08-07 18:25:34 +02:00
net Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6 2010-07-27 09:21:00 -07:00
nubus
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of Merge remote branch 'origin' into secretlab/next-devicetree 2010-05-22 00:36:56 -06:00
oprofile
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parisc
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parport m68k: amiga - Parallel port platform device conversion 2010-05-26 19:51:09 +02:00
pci PCI: fall back to original BIOS BAR addresses 2010-07-16 11:39:48 -07:00
pcmcia Merge master.kernel.org:/home/rmk/linux-2.6-arm 2010-07-26 08:20:38 -07:00
platform intel_scu_ipc: Oops/crash fixes 2010-07-19 13:17:37 -07:00
pnp
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power Merge git://git.infradead.org/users/cbou/battery-2.6.35 2010-07-27 09:22:55 -07:00
pps
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ps3
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rapidio rapidio: fix new kernel-doc warnings 2010-05-30 09:02:47 -07:00
regulator regulator: tps6507x: allow driver to use DEFDCDC{2,3}_HIGH register 2010-07-28 15:09:26 +01:00
rtc drivers/rtc/rtc-rx8581.c: fix setdatetime 2010-07-27 14:32:06 -07:00
s390 block: push down BKL into .open and .release 2010-08-07 18:25:34 +02:00
sbus drivers/sbus: Remove unnecessary casts of private_data 2010-07-12 21:16:04 -07:00
scsi scsi/sd: remove big kernel lock 2010-08-07 18:26:08 +02:00
serial serial: fix rs485 for atmel_serial on avr32 2010-07-26 11:59:31 -07:00
sfi SFI: do not return freed pointer 2010-06-01 12:04:35 -04:00
sh sh: Make intc messages consistent via pr_fmt. 2010-06-02 18:10:00 +09:00
sn
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spi powerpc/cpm: Reintroduce global spi_pram struct (fixes build issue) 2010-07-11 11:03:22 -05:00
ssb ssb: fix NULL ptr deref when pcihost_wrapper is used 2010-05-28 13:57:01 -04:00
staging block: push down BKL into .open and .release 2010-08-07 18:25:34 +02:00
tc
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telephony drivers/telephony/ixj.c: use memdup_user 2010-05-27 09:12:42 -07:00
thermal
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uio
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usb Merge git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb-2.6 2010-07-26 13:06:39 -07:00
uwb
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vhost Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6 2010-07-20 16:26:42 -07:00
video Merge master.kernel.org:/home/rmk/linux-2.6-arm 2010-07-30 19:02:51 -07:00
virtio virtio: fix oops on OOM 2010-07-26 08:05:31 -07:00
vlynq
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w1 sysfs: add struct file* to bin_attr callbacks 2010-05-21 09:37:31 -07:00
watchdog watchdog: at32ap700x_wdt: register misc device last in probe() function 2010-06-17 09:56:57 +00:00
xen xen: avoid allocation causing potential swap activity on the resume path 2010-06-03 09:34:45 +01:00
zorro sysfs: add struct file* to bin_attr callbacks 2010-05-21 09:37:31 -07:00
Kconfig
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Makefile intel_idle: native hardware cpuidle driver for latest Intel processors 2010-05-28 14:26:20 -04:00