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Toshi Kani 545ed20e6d dm: add infrastructure for DAX support 
Change mapped device to implement direct_access function,
dm_blk_direct_access(), which calls a target direct_access function.
'struct target_type' is extended to have target direct_access interface.
This function limits direct accessible size to the dm_target's limit
with max_io_len().

Add dm_table_supports_dax() to iterate all targets and associated block
devices to check for DAX support.  To add DAX support to a DM target the
target must only implement the direct_access function.

Add a new dm type, DM_TYPE_DAX_BIO_BASED, which indicates that mapped
device supports DAX and is bio based.  This new type is used to assure
that all target devices have DAX support and remain that way after
QUEUE_FLAG_DAX is set in mapped device.

At initial table load, QUEUE_FLAG_DAX is set to mapped device when setting
DM_TYPE_DAX_BIO_BASED to the type.  Any subsequent table load to the
mapped device must have the same type, or else it fails per the check in
table_load().

Signed-off-by: Toshi Kani <toshi.kani@hpe.com>
Signed-off-by: Mike Snitzer <snitzer@redhat.com>
 		2016-07-20 23:49:49 -04:00
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accessibility
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acpi Merge branches 'acpica-fixes', 'acpi-video' and 'acpi-processor' 2016-06-03 22:35:05 +02:00
amba
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android
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ata block, drivers, cgroup: use op_is_write helper instead of checking for REQ_WRITE 2016-06-07 13:41:38 -06:00
atm atm: iphase: off by one in rx_pkt() 2016-05-31 11:52:59 -07:00
auxdisplay
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base More power management updates for v4.7-rc1 2016-05-25 15:29:21 -07:00
bcma MTD updates for v4.7: 2016-05-24 11:00:20 -07:00
block block: add QUEUE_FLAG_DAX for devices to advertise their DAX support 2016-07-20 21:01:01 -06:00
bluetooth Bluetooth: Add USB ID 13D3:3487 to ath3k 2016-05-13 16:54:59 +02:00
bus Merge branch 'upstream' of git://git.linux-mips.org/pub/scm/ralf/upstream-linus 2016-05-19 10:02:26 -07:00
cdrom
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char Merge branch 'akpm' (patches from Andrew) 2016-05-20 22:31:33 -07:00
clk remove lots of IS_ERR_VALUE abuses 2016-05-27 15:26:11 -07:00
clocksource Small release overall. 2016-05-19 11:27:09 -07:00
connector
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cpufreq Merge branch 'pm-cpufreq-fixes' 2016-06-03 22:34:18 +02:00
cpuidle cpuidle: Fix cpuidle_state_is_coupled() argument in cpuidle_enter() 2016-05-18 02:48:37 +02:00
crypto Merge branch 'linus' of git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6 2016-05-30 15:20:18 -07:00
dax /dev/dax, core: file operations and dax-mmap 2016-05-20 22:02:55 -07:00
dca
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devfreq
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dio
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dma remove lots of IS_ERR_VALUE abuses 2016-05-27 15:26:11 -07:00
dma-buf dma-buf: use vma_pages() 2016-05-31 22:17:05 +05:30
edac Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial 2016-05-17 17:05:30 -07:00
eisa
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extcon
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firewire
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firmware driver core update for 4.7-rc1 2016-05-20 21:26:15 -07:00
fmc
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fpga
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gpio gpio: drop lock before reading GPIO direction 2016-05-30 17:11:59 +02:00
gpu drm/omap: fix unused variable warning. 2016-06-03 14:39:41 +10:00
hid Merge branch 'for-4.7/wacom' into for-linus 2016-05-17 12:42:27 +02:00
hsi HSI: omap-ssi: move omap_ssi_port_update_fclk 2016-05-09 22:45:18 +02:00
hv
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hwmon Merge branch 'hwmon-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jdelvare/staging 2016-05-26 09:48:23 -07:00
hwspinlock drivers/hwspinlock: use correct radix tree API 2016-05-20 17:58:30 -07:00
hwtracing Char / Misc driver update for 4.7-rc1 2016-05-20 21:20:31 -07:00
i2c i2c: dev: use after free in detach 2016-05-28 17:37:42 +02:00
ide block, drivers: add REQ_OP_FLUSH operation 2016-06-07 13:41:38 -06:00
idle
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iio Staging and IIO driver update for 4.7-rc1 2016-05-20 22:20:48 -07:00
infiniband Merge branch 'for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/nab/target-pending 2016-05-28 12:04:17 -07:00
input Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input 2016-05-27 19:14:35 -07:00
iommu remove lots of IS_ERR_VALUE abuses 2016-05-27 15:26:11 -07:00
ipack
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irqchip irqchip/irq-pic32-evic: Fix bug with external interrupts. 2016-06-02 18:03:50 +01:00
isdn TTY and Serial driver update for 4.7-rc1 2016-05-20 20:57:27 -07:00
leds pwm: Changes for v4.7-rc1 2016-05-25 10:40:15 -07:00
lguest
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lightnvm block, fs, mm, drivers: use bio set/get op accessors 2016-06-07 13:41:38 -06:00
macintosh
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mailbox
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mcb
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md dm: add infrastructure for DAX support 2016-07-20 23:49:49 -04:00
media Merge branch 'hash' of git://ftp.sciencehorizons.net/linux 2016-05-28 16:15:25 -07:00
memory MTD updates for v4.7: 2016-05-24 11:00:20 -07:00
memstick drivers/memstick/core/mspro_block: use kmemdup 2016-05-23 17:04:14 -07:00
message SCSI misc on 20160517 2016-05-18 16:38:59 -07:00
mfd remove lots of IS_ERR_VALUE abuses 2016-05-27 15:26:11 -07:00
misc Char / Misc driver update for 4.7-rc1 2016-05-20 21:20:31 -07:00
mmc block, drivers: add REQ_OP_FLUSH operation 2016-06-07 13:41:38 -06:00
mtd block, drivers: add REQ_OP_FLUSH operation 2016-06-07 13:41:38 -06:00
net Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2016-05-31 22:28:28 -07:00
nfc NFC: pn533: handle interrupted commands in pn533_recv_frame 2016-05-10 00:01:47 +02:00
ntb
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nubus
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nvdimm block: add QUEUE_FLAG_DAX for devices to advertise their DAX support 2016-07-20 21:01:01 -06:00
nvme block, drivers: add REQ_OP_FLUSH operation 2016-06-07 13:41:38 -06:00
nvmem remove lots of IS_ERR_VALUE abuses 2016-05-27 15:26:11 -07:00
of MTD updates for v4.7: 2016-05-24 11:00:20 -07:00
oprofile
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parisc
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parport
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pci Char / Misc driver update for 4.7-rc1 2016-05-20 21:20:31 -07:00
pcmcia
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perf drivers/perf: arm_pmu: Avoid leaking pmu->irq_affinity on error 2016-06-03 10:16:21 +01:00
phy USB patches for 4.7-rc1 2016-05-20 21:12:25 -07:00
pinctrl pinctrl: mediatek: fix dual-edge code defect 2016-05-31 10:13:45 +02:00
platform platform/chrome: Driver and binding changes for 4.7 2016-05-28 12:32:01 -07:00
pnp driver core update for 4.7-rc1 2016-05-20 21:26:15 -07:00
power power supply and reset changes for the v4.7 series 2016-05-20 14:06:21 -07:00
powercap Power management material for v4.7-rc1 2016-05-16 19:17:22 -07:00
pps
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ps3
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ptp ptp: oops in ptp_ioctl() 2016-05-29 22:32:27 -07:00
pwm pwm: Changes for v4.7-rc1 2016-05-25 10:40:15 -07:00
rapidio
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ras
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regulator regulator: pwm: Use pwm_get_args() where appropriate 2016-05-17 14:45:02 +02:00
remoteproc remoteproc: Add additional crash reasons 2016-05-12 15:50:19 -07:00
reset
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rpmsg
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rtc rtc: tps6586x: rename so module can be autoloaded 2016-05-21 17:07:17 +02:00
s390 block: add QUEUE_FLAG_DAX for devices to advertise their DAX support 2016-07-20 21:01:01 -06:00
sbus openprom: fix warning 2016-05-20 18:33:37 -07:00
scsi sd: don't use the ALL_TG_PT bit for reservations 2016-07-18 15:37:35 -04:00
sfi
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sh
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sn
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soc soc: mtk-pmic-wrap: avoid integer overflow warning 2016-05-19 15:20:24 +02:00
spi sound updates #2 for 4.7-rc1 2016-05-28 12:23:12 -07:00
spmi
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ssb
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staging block, fs, mm, drivers: use bio set/get op accessors 2016-06-07 13:41:38 -06:00
target target: use bio op accessors 2016-06-07 13:41:38 -06:00
tc
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thermal Merge branches 'acpica-fixes', 'acpi-video' and 'acpi-processor' 2016-06-03 22:35:05 +02:00
thunderbolt
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tty devpts: Make each mount of devpts an independent filesystem. 2016-06-05 10:36:01 -07:00
uio
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usb Merge branch 'for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/nab/target-pending 2016-05-28 12:04:17 -07:00
uwb
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vfio vfio/pci: Allow VPD short read 2016-05-31 21:25:52 -06:00
vhost target: make close_session optional 2016-05-10 01:19:26 -07:00
video OMAPDSS: HDMI5: Change DDC timings 2016-05-31 08:20:43 +03:00
virt
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virtio virtio_balloon: fix PFN format for virtio-1 2016-05-22 19:44:13 +03:00
vlynq
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vme
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w1
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watchdog Merge git://www.linux-watchdog.org/linux-watchdog 2016-05-25 10:19:17 -07:00
xen Merge branch 'for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/nab/target-pending 2016-05-28 12:04:17 -07:00
zorro
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Kconfig libnvdimm for 4.7 2016-05-23 11:18:01 -07:00
Makefile /dev/dax, pmem: direct access to persistent memory 2016-05-20 22:02:53 -07:00