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linux-uconsole/drivers
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Martin K. Petersen dce52eace9 block: Deprecate QUEUE_FLAG_CLUSTER and use queue_limits instead 
commit e692cb668f upstream.

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>
Signed-off-by: Jens Axboe <jaxboe@fusionio.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2011-01-07 14:43:18 -08:00
..
accessibility
acpi ACPI: EC: Add another dmi match entry for MSI hardware 2011-01-07 14:43:07 -08:00
amba
ata libata: fix NULL sdev dereference race in atapi_qc_complete() 2010-12-09 13:26:52 -08:00
atm solos-pci: Fix race condition in tasklet RX handling 2010-08-13 13:19:34 -07:00
auxdisplay
base firmware_class: fix memory leak - free allocated pages 2010-08-02 10:21:25 -07:00
block loop: Update mtime when writing using aops 2010-08-13 13:20:23 -07:00
bluetooth bluetooth: Fix missing NULL check 2010-11-22 10:47:30 -08:00
cdrom
char hvc_console: Fix race between hvc_close and hvc_remove, again 2011-01-07 14:43:12 -08:00
clocksource clocksource: sh_tmu: compute mult and shift before registration 2010-09-26 17:21:37 -07:00
connector connector: Delete buggy notification code. 2010-02-09 04:50:59 -08:00
cpufreq revert "[CPUFREQ] remove rwsem lock from CPUFREQ_GOV_STOP call (second call site)" 2010-08-02 10:21:25 -07:00
cpuidle cpuidle: Fix incorrect optimization 2010-05-12 14:57:16 -07:00
crypto crypto: padlock - Fix AES-CBC handling on odd-block-sized input 2010-12-09 13:27:10 -08:00
dca
dio
dma mv_xor: fix race in tasklet function 2011-01-07 14:43:17 -08:00
edac amd64_edac: Fix interleaving check 2011-01-07 14:43:06 -08:00
eisa
firewire firewire: ohci: fix race in AR split packet handling 2010-12-09 13:26:50 -08:00
firmware DMI: allow omitting ident strings in DMI tables 2010-01-28 15:01:52 -08:00
gpio gpiolib: Actually set output state in wm831x_gpio_direction_output() 2010-03-15 08:49:57 -07:00
gpu drm/kms: remove spaces from connector names (v2) 2011-01-07 14:43:03 -08:00
hid HID: hidraw: fix window in hidraw_release 2011-01-07 14:43:13 -08:00
hwmon hwmon: (adm1026) Fix setting fan_div 2011-01-07 14:43:06 -08:00
i2c i2c-pca-platform: Change device name of request_irq 2010-12-09 13:26:33 -08:00
ide ide-cd: Do not access completed requests in the irq handler 2010-08-13 13:19:36 -07:00
idle
ieee1394
ieee802154 ieee802154: dont leak skbs in ieee802154_fake_xmit() 2009-11-19 13:16:21 -08:00
infiniband IB/uverbs: Handle large number of entries in poll CQ 2011-01-07 14:43:06 -08:00
input Input: i8042 - add Sony VAIO VPCZ122GX to nomux list 2010-12-09 13:27:08 -08:00
isdn isdn: fix information leak 2010-08-26 16:41:51 -07:00
leds leds-gpio: fix default state handling on OF platforms 2010-04-01 15:58:53 -07:00
lguest lguest: fix bug in setting guest GDT entry 2010-01-06 15:05:19 -08:00
macintosh macintosh/therm_adt746x: Fix sysfs attributes lifetime 2010-03-15 08:49:46 -07:00
mca
md block: Deprecate QUEUE_FLAG_CLUSTER and use queue_limits instead 2011-01-07 14:43:18 -08:00
media V4L/DVB: ivtvfb: prevent reading uninitialized stack memory 2010-12-09 13:27:10 -08:00
memstick memstick: fix hangs on unexpected device removal in mspro_blk 2010-08-26 16:41:32 -07:00
message SCSI: mptsas: fix hangs caused by ATA pass-through 2010-09-26 17:21:28 -07:00
mfd mfd: WM835x GPIO direction register is not locked 2010-01-22 15:18:18 -08:00
misc x86: uv: xpc NULL deref when mesq becomes empty 2010-12-09 13:27:15 -08:00
mmc mmc: sdhci-s3c: fix NULL ptr access in sdhci_s3c_remove 2010-10-28 21:43:55 -07:00
mtd pxa3xx: fix ns2cycle equation 2010-08-26 16:41:42 -07:00
net p54usb: New USB ID for Gemtek WUBI-100GW 2011-01-07 14:43:16 -08:00
nubus
of
oprofile oprofile: fix crash when accessing freed task structs 2010-09-20 13:17:50 -07:00
parisc PARISC: led.c - fix potential stack overflow in led_proc_write() 2010-08-10 10:20:37 -07:00
parport
pci x86, vt-d: Quirk for masking vtd spec errors to platform error handling logic 2011-01-07 14:43:12 -08:00
pcmcia pcmcia: avoid buffer overflow in pcmcia_setup_isa_irq 2010-08-26 16:41:53 -07:00
platform eeepc-laptop: check wireless hotplug events 2010-08-02 10:21:29 -07:00
pnp
power olpc_battery: Fix endian neutral breakage for s16 values 2010-12-09 13:26:37 -08:00
pps pps: events reporting fix up 2009-11-12 07:26:01 -08:00
ps3
rapidio
regulator regulator: Fix display of null constraints for regulators 2010-02-23 07:37:49 -08:00
rtc rtc: fix ds1388 time corruption 2010-08-02 10:20:53 -07:00
s390 nohz: Introduce arch_needs_cpu 2010-08-13 13:20:13 -07:00
sbus
scsi block: Deprecate QUEUE_FLAG_CLUSTER and use queue_limits instead 2011-01-07 14:43:18 -08:00
serial serial: cpm_uart: implement the cpm_uart_early_write() function for console poll 2010-08-02 10:20:52 -07:00
sfi
sh
sn
spi SPI: spi_txx9: Fix bit rate calculation 2009-12-02 23:58:32 +00:00
ssb ssb: b43-pci-bridge: Add new vendor for BCM4318 2010-12-09 13:26:41 -08:00
staging staging: rtl8187se: Change panic to warn when RF switch turned off 2010-12-09 13:27:04 -08:00
tc
telephony
thermal
uio uio: pm_runtime_disable is needed if failed 2009-11-13 11:36:00 +09:00
usb USB: usb-storage: unusual_devs entry for the Samsung YP-CP3 2011-01-07 14:43:15 -08:00
uwb
video efifb: support the EFI framebuffer on more Apple hardware 2010-12-09 13:27:08 -08:00
virtio virtio-pci: disable msi at startup 2010-08-02 10:20:42 -07:00
vlynq
w1 w1: w1 temp: fix negative termperature calculation 2010-05-12 14:57:00 -07:00
watchdog WATCHDOG: iTCO_wdt: TCO Watchdog patch for additional Intel Cougar Point DeviceIDs 2010-04-26 07:41:18 -07:00
xen xen: ensure that all event channels start off bound to VCPU 0 2010-12-09 13:26:42 -08:00
zorro
Kconfig
Makefile virtio: initialize earlier 2010-05-12 14:57:15 -07:00