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Martin K. Petersen e692cb668f block: Deprecate QUEUE_FLAG_CLUSTER and use queue_limits instead 
When stacking devices, a request_queue is not always available. This
forced us to have a no_cluster flag in the queue_limits that could be
used as a carrier until the request_queue had been set up for a
metadevice.

There were several problems with that approach. First of all it was up
to the stacking device to remember to set queue flag after stacking had
completed. Also, the queue flag and the queue limits had to be kept in
sync at all times. We got that wrong, which could lead to us issuing
commands that went beyond the max scatterlist limit set by the driver.

The proper fix is to avoid having two flags for tracking the same thing.
We deprecate QUEUE_FLAG_CLUSTER and use the queue limit directly in the
block layer merging functions. The queue_limit 'no_cluster' is turned
into 'cluster' to avoid double negatives and to ease stacking.
Clustering defaults to being enabled as before. The queue flag logic is
removed from the stacking function, and explicitly setting the cluster
flag is no longer necessary in DM and MD.

Reported-by: Ed Lin <ed.lin@promise.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Acked-by: Mike Snitzer <snitzer@redhat.com>
Cc: stable@kernel.org
Signed-off-by: Jens Axboe <jaxboe@fusionio.com>
 		2010-12-17 08:35:53 +01:00
..
accessibility
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acpi ACPI: debugfs custom_method open to non-root 2010-11-13 09:52:16 -08:00
amba
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ata sata_via: apply magic FIFO fix to vt6420 too 2010-11-19 13:16:26 -05:00
atm solos: Refuse to upgrade firmware with older FPGA. It doesn't work. 2010-11-08 12:17:05 -08:00
auxdisplay
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base PM: Allow devices to be removed during late suspend and early resume 2010-11-11 01:50:53 +01:00
block drbd: fix for spin_lock_irqsave in endio callback 2010-11-27 19:50:43 +01:00
bluetooth Bluetooth: Add MacBookAir3,1(2) support 2010-11-09 01:08:53 -02:00
cdrom cdrom: gdrom: ctrl_in/outX to __raw_read/writeX conversion. 2010-10-27 14:33:39 +09:00
char Char: virtio_console, fix memory leak 2010-11-24 15:21:12 +10:30
clocksource ARM: shmobile: remove sh_timer_config clk member 2010-10-31 10:40:39 -04:00
connector connector: remove lazy workqueue creation 2010-10-24 14:20:01 -07:00
cpufreq [CPUFREQ] add sampling_down_factor tunable to improve ondemand performance 2010-10-22 11:44:47 -04:00
cpuidle
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crypto Merge git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6 2010-11-13 09:55:56 -08:00
dca
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dio
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dma drivers/dma/Kconfig: add part number for Topcliff. 2010-10-29 14:14:02 -07:00
edac Merge branch 'linux_next' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/i7core 2010-10-26 10:13:48 -07:00
eisa
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firewire SCSI host lock push-down 2010-11-16 13:33:23 -08:00
firmware dmi: log board, system, and BIOS information 2010-10-27 18:03:05 -07:00
gpio gpio: Add VIA VX855 GPIO driver 2010-10-29 00:29:51 +02:00
gpu Merge branch 'drm-intel-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/ickle/drm-intel 2010-11-19 10:28:13 -08:00
hid BKL: remove extraneous #include <smp_lock.h> 2010-11-17 08:59:32 -08:00
hwmon hwmon: (lis3lv02d_i2c) Fix compile warnings 2010-11-22 12:23:39 -08:00
i2c i2c: Sanity checks on adapter registration 2010-11-15 22:40:38 +01:00
ide ide: clean up timed out request handling 2010-10-26 10:17:30 -07:00
idle Merge branch 'idle-release' of git://git.kernel.org/pub/scm/linux/kernel/git/lenb/linux-idle-2.6 2010-10-26 17:28:07 -07:00
ieee802154
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infiniband BKL: remove extraneous #include <smp_lock.h> 2010-11-17 08:59:32 -08:00
input Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input 2010-11-19 10:31:04 -08:00
isdn Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6 2010-11-05 15:25:48 -07:00
leds drivers/leds/leds-lp5523.c: perform SW reset before detection 2010-11-25 06:50:44 +09:00
lguest
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macintosh drivers/macintosh/adb-iop.c: flags should be unsigned long 2010-11-12 07:55:30 -08:00
mca
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md block: Deprecate QUEUE_FLAG_CLUSTER and use queue_limits instead 2010-12-17 08:35:53 +01:00
media BKL: remove extraneous #include <smp_lock.h> 2010-11-17 08:59:32 -08:00
memstick
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message SCSI host lock push-down 2010-11-16 13:33:23 -08:00
mfd mfd: Fix a memory leak when unload mc13xxx-core module 2010-10-29 00:30:43 +02:00
misc drivers/misc/isl29020.c: remove incorrect kfree in isl29020_remove() 2010-11-25 06:50:47 +09:00
mmc mmc: sdhci: 8-bit bus width changes 2010-11-22 15:12:04 -05:00
mtd UBI: release locks in check_corruption 2010-11-19 15:19:40 +02:00
net Merge branch 'drivers' of git://git.kernel.org/pub/scm/linux/kernel/git/cmetcalf/linux-tile 2010-11-25 07:42:03 +09:00
nubus
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of of/mips: Cleanup some include directives/files. 2010-10-21 11:10:11 -06:00
oprofile Merge branches 'perf-fixes-for-linus' and 'x86-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip 2010-10-30 11:43:26 -07:00
parisc BKL: remove extraneous #include <smp_lock.h> 2010-11-17 08:59:32 -08:00
parport Merge branch 'for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial 2010-10-24 13:41:39 -07:00
pci Merge branch 'drivers' of git://git.kernel.org/pub/scm/linux/kernel/git/cmetcalf/linux-tile 2010-11-25 07:42:03 +09:00
pcmcia drivers/pcmcia/soc_common.c: Use printf extension %pV 2010-11-10 14:31:28 +01:00
platform Remove duplicate includes from many files 2010-10-27 18:03:18 -07:00
pnp BKL: remove extraneous #include <smp_lock.h> 2010-11-17 08:59:32 -08:00
power power: Revert "power_supply: Mark twl4030_charger as broken" 2010-10-29 00:30:44 +02:00
pps
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ps3
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rapidio rapidio: use resource_size() 2010-11-12 07:55:30 -08:00
regulator regulator: max8998 BUCK1/2 voltage change with use of GPIOs 2010-10-29 00:30:15 +02:00
rtc Merge branches 'sh/rtc' and 'common/clkfwk' into sh/urgent 2010-11-10 18:15:44 +09:00
s390 [S390] qdio: free indicator after reset is finished 2010-11-25 09:52:59 +01:00
sbus Merge branch 'next-devicetree' of git://git.secretlab.ca/git/linux-2.6 2010-10-25 08:19:14 -07:00
scsi block: Deprecate QUEUE_FLAG_CLUSTER and use queue_limits instead 2010-12-17 08:35:53 +01:00
serial BKL: remove extraneous #include <smp_lock.h> 2010-11-17 08:59:32 -08:00
sfi
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sh Merge branch 'common/clkfwk' into sh-fixes-for-linus 2010-11-19 16:43:23 +09:00
sn
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spi Merge branch 'next-spi' of git://git.secretlab.ca/git/linux-2.6 2010-11-01 07:50:43 -04:00
ssb
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staging Fix build failure at cx25821-video driver 2010-11-18 11:42:05 -08:00
tc
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telephony Merge branch 'llseek' of git://git.kernel.org/pub/scm/linux/kernel/git/arnd/bkl 2010-10-22 10:52:56 -07:00
thermal
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tty Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input 2010-11-19 10:31:04 -08:00
uio Merge branch 'for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial 2010-10-24 13:41:39 -07:00
usb Merge branch 'usb-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb-2.6 2010-11-24 08:21:43 +09:00
uwb UWB: Return UWB_RSV_ALLOC_NOT_FOUND rather than crashing on NULL dereference if kzalloc fails 2010-11-11 07:14:07 -08:00
vhost Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next-2.6 2010-10-23 11:47:02 -07:00
video Merge master.kernel.org:/home/rmk/linux-2.6-arm 2010-11-25 07:41:10 +09:00
virtio virtio: fix format of sysfs driver/vendor files 2010-11-24 15:21:12 +10:30
vlynq
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w1 w1: don't allow arbitrary users to remove w1 devices 2010-10-27 18:03:17 -07:00
watchdog WATCHDOG: octeon-wdt: Use I/O clock rate for timing calculations. 2010-10-29 19:08:42 +01:00
xen Merge branch 'upstream/for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jeremy/xen 2010-11-24 08:23:18 +09:00
zorro BKL: remove extraneous #include <smp_lock.h> 2010-11-17 08:59:32 -08:00
Kconfig
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Makefile TTY: create drivers/tty and move the tty core files there 2010-11-05 08:10:33 -07:00