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Mike Snitzer 754c5fc7eb dm: calculate queue limits during resume not load 
Currently, device-mapper maintains a separate instance of 'struct
queue_limits' for each table of each device.  When the configuration of
a device is to be changed, first its table is loaded and this structure
is populated, then the device is 'resumed' and the calculated
queue_limits are applied.

This places restrictions on how userspace may process related devices,
where it is often advantageous to 'load' tables for several devices
at once before 'resuming' them together.  As the new queue_limits
only take effect after the 'resume', if they are changing and one
device uses another, the latter must be 'resumed' before the former
may be 'loaded'.

This patch moves the calculation of these queue_limits out of
the 'load' operation into 'resume'.  Since we are no longer
pre-calculating this struct, we no longer need to maintain copies
within our dm structs.

dm_set_device_limits() now passes the 'start' of the device's
data area (aka pe_start) as the 'offset' to blk_stack_limits().

init_valid_queue_limits() is replaced by blk_set_default_limits().

Signed-off-by: Mike Snitzer <snitzer@redhat.com>
Cc: martin.petersen@oracle.com
Signed-off-by: Alasdair G Kergon <agk@redhat.com>
2009-06-22 10:12:34 +01:00
..
accessibility
acpi Merge branch 'acpica' of git://git.kernel.org/pub/scm/linux/kernel/git/lenb/linux-acpi-2.6 2009-06-16 11:24:23 -07:00
amba
ata powerpc/5xxx: Add common mpc5xxx_get_bus_frequency() function 2009-06-17 00:30:22 -06:00
atm
auxdisplay
base Merge branch 'akpm' 2009-06-16 19:50:13 -07:00
block hd: stop defining MAJOR_NR 2009-06-18 09:56:20 +02:00
bluetooth Merge branch 'master' of master.kernel.org:/pub/scm/linux/kernel/git/torvalds/linux-2.6 2009-06-15 03:02:23 -07:00
cdrom block: Use accessor functions for queue limits 2009-05-22 23:22:54 +02:00
char Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input 2009-06-20 10:17:02 -07:00
clocksource Merge branches 'sh/pci-express-integration', 'sh/rsk-updates', 'sh/platform-updates' and 'sh/perf_counter' 2009-06-17 16:37:26 +09:00
connector trivial: Kconfig: .ko is normally not included in module names 2009-06-12 18:01:50 +02:00
cpufreq [CPUFREQ] Only set sampling_rate_max deprecated, sampling_rate_min is useful 2009-06-15 11:49:41 -04:00
cpuidle
crypto crypto: padlock-aes - work around Nano CPU errata in CBC mode 2009-06-18 19:31:09 +08:00
dca
dio
dma DMA: TXx9 Soc DMA Controller driver 2009-06-17 11:06:25 +01:00
edac edac: Kconfig: fix the meaning of EDAC abbreviation 2009-06-18 13:03:57 -07:00
eisa Merge branch 'akpm' 2009-06-16 19:50:13 -07:00
firewire Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ieee1394/linux1394-2.6 2009-06-16 14:29:46 -07:00
firmware Pull for-2.6.31 into release 2009-06-17 09:35:24 -07:00
gpio gpio: driver for PrimeCell PL061 GPIO controller 2009-06-19 16:46:03 -07:00
gpu drm/i915: enable GEM on PAE. 2009-06-19 10:29:20 +10:00
hid Driver Core: usb: add nodename support for usb drivers. 2009-06-15 21:30:25 -07:00
hwmon Merge branch 'akpm' 2009-06-16 19:50:13 -07:00
i2c Merge branch 'i2c-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jdelvare/staging 2009-06-19 17:45:51 -07:00
ide Merge branch 'for-2.6.31' of git://git.kernel.org/pub/scm/linux/kernel/git/bart/ide-2.6 2009-06-20 10:11:11 -07:00
idle i7300_idle: allow testing on i5000-series hardware w/o re-compile 2009-05-28 20:52:40 -04:00
ieee1394 Merge branch 'for-linus2' of git://git.kernel.org/pub/scm/linux/kernel/git/vegard/kmemcheck 2009-06-16 13:09:51 -07:00
ieee802154 ieee802154: fix kconfig bool/tristate muckup 2009-06-13 23:36:29 -07:00
infiniband infiniband: ehca: remove driver_data direct access of struct device 2009-06-15 21:30:27 -07:00
input Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input 2009-06-20 10:17:02 -07:00
isdn net: fix network drivers ndo_start_xmit() return values 2009-06-17 04:31:16 -07:00
leds [ARM] S3C24XX: GPIO: Move gpio functions out of <mach/hardware.h> 2009-05-18 16:25:40 +01:00
lguest Merge git://git.kernel.org/pub/scm/linux/kernel/git/rusty/linux-2.6-lguest 2009-06-12 09:32:26 -07:00
macintosh Merge branch 'i2c-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jdelvare/staging 2009-06-16 11:29:17 -07:00
mca
md dm: calculate queue limits during resume not load 2009-06-22 10:12:34 +01:00
media soc-camera: unify i2c camera device platform data 2009-06-17 16:22:34 +09:00
memstick block: Do away with the notion of hardsect_size 2009-05-22 23:22:54 +02:00
message convert some DMA_nnBIT_MASK() callers 2009-06-19 16:46:06 -07:00
mfd Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input 2009-06-20 10:17:02 -07:00
misc gru: copyright fixes 2009-06-18 13:04:04 -07:00
mmc sdhci: remove needless double parenthesis 2009-06-21 21:01:00 +02:00
mtd Merge branch 'linux-next' of git://git.infradead.org/ubi-2.6 2009-06-17 09:48:30 -07:00
net Merge branch 'merge' of git://git.kernel.org/pub/scm/linux/kernel/git/benh/powerpc 2009-06-19 17:40:40 -07:00
nubus
of Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next-2.6 2009-06-15 09:40:05 -07:00
oprofile oprofile: fix cpu buffer size 2009-05-07 17:28:59 +02:00
parisc parisc: remove driver_data direct access of struct device 2009-06-15 21:30:28 -07:00
parport parport: remove driver_data direct access of struct device 2009-06-15 21:30:28 -07:00
pci Fix pci_claim_resource 2009-06-17 14:04:42 -07:00
pcmcia Merge branch 'akpm' 2009-06-16 19:50:13 -07:00
platform dell-laptop: fix rfkill conversion 2009-06-15 15:05:58 -04:00
pnp Merge branch 'drm-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/airlied/drm-2.6 2009-06-12 18:09:18 -07:00
power
pps LinuxPPS: core support 2009-06-18 13:04:04 -07:00
ps3 drivers/ps3: Add missing annotations 2009-06-15 16:47:25 +10:00
rapidio rio: warn_unused_result warnings fix 2009-06-15 21:45:32 -05:00
regulator regulator/max1586: fix V3 gain calculation integer overflow 2009-06-15 11:18:27 +01:00
rtc rtc: make rtc_update_irq callable with irqs enabled 2009-06-19 16:46:05 -07:00
s390 Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next-2.6 2009-06-18 14:07:15 -07:00
sbus openprom: Squelch useless GCC warning. 2009-06-16 04:56:57 -07:00
scsi Merge commit 'origin/master' into next 2009-06-18 11:16:55 +10:00
serial Merge branch 'merge' of git://git.kernel.org/pub/scm/linux/kernel/git/benh/powerpc 2009-06-19 17:40:40 -07:00
sh sh: intc: alloc_bootmem() -> kzalloc() conversion. 2009-06-12 01:34:12 +03:00
sn
spi spi_mpc8xxx: s/83xx/8xxx/g 2009-06-19 16:46:05 -07:00
ssb SSB: BCM47xx: Export ssb_watchdog_timer_set 2009-06-08 16:57:50 +01:00
staging Staging: comedi: fix build errors 2009-06-19 11:04:32 -07:00
tc
telephony
thermal thermal: remove driver_data direct access of struct device 2009-06-15 21:30:27 -07:00
uio
usb Merge commit 'origin/master' into next 2009-06-18 11:16:55 +10:00
uwb
video Merge branch 'merge' of git://git.kernel.org/pub/scm/linux/kernel/git/benh/powerpc 2009-06-19 17:40:40 -07:00
virtio virtio: enhance id_matching for virtio drivers 2009-06-12 22:16:40 +09:30
vlynq drivers: add support for the TI VLYNQ bus 2009-06-16 19:47:52 -07:00
w1 w1-gpio: add external pull-up enable callback 2009-06-18 13:03:58 -07:00
watchdog Merge branch 'merge' of git://git.kernel.org/pub/scm/linux/kernel/git/benh/powerpc 2009-06-19 17:40:40 -07:00
xen PM core: rename suspend and resume functions 2009-06-12 21:32:31 +02:00
zorro
Kconfig LinuxPPS: core support 2009-06-18 13:04:04 -07:00
Makefile LinuxPPS: core support 2009-06-18 13:04:04 -07:00