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Otherwise it fails like this on cards like the Transcend 16GB SDHC card:
mmc0: new SDHC card at address b368
mmcblk0: mmc0:b368 SDC 15.0 GiB
mmcblk0: error -110 sending status command, retrying
mmcblk0: error -84 transferring data, sector 0, nr 8, cmd response 0x900, card status 0xb0
Tested on my Lenovo x200 laptop.
[bhelgaas: changelog]
Signed-off-by: Andy Lutomirski <luto@amacapital.net>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Acked-by: Chris Ball <cjb@laptop.org>
CC: Manoj Iyer <manoj.iyer@canonical.com>
CC: stable@vger.kernel.org
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Ulrich reported that his USB3 cardreader does not work reliably when
connected to the USB3 port. It turns out that USB3 controller failed to
awaken when plugging in the USB3 cardreader. Further experiments found
that the USB3 host controller can only be awakened via polling, not via PME
interrupt. But if the PCIe port to which the USB3 host controller is
connected is suspended, we cannot poll the controller because its config
space is not accessible when the PCIe port is in a low power state.
To solve the issue, the PCIe port will not be suspended if any subordinate
device needs PME polling.
[bhelgaas: use bool consistently rather than mixing int/bool]
Reference: http://lkml.kernel.org/r/50841CCC.9030809@uli-eckhardt.de
Reported-by: Ulrich Eckhardt <usb@uli-eckhardt.de>
Tested-by: Sarah Sharp <sarah.a.sharp@linux.intel.com>
Signed-off-by: Huang Ying <ying.huang@intel.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Acked-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
CC: stable@vger.kernel.org # v3.6+
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If we request "num_vfs" and the driver's sriov_configure() method enables
exactly that number ("num_vfs_enabled"), we complain "Invalid value for
number of VFs to enable" and return an error. We should silently return
success instead.
Also, use kstrtou16() since numVFs is defined to be a 16-bit field and
rework to simplify control flow.
Reported-by: Greg Rose <gregory.v.rose@intel.com>
Reference: http://lkml.kernel.org/r/20121214101911.00002f59@unknown
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Tested-by: Donald Dutile <ddutile@redhat.com>
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This patch adds a check for npct->prcm_base to make sure that the
address is not NULL before using it, as the driver was made capable of
loading even without a proper memory resource in:
f1671bf pinctrl/nomadik: make independent of prcmu driver
Also, refuses to probe without prcm_base on anything else than nomadik.
This solves the following crash, introduced during the merge window when
booting on U8500 with device tree:
pinctrl-nomadik pinctrl-db8500: No PRCM base, assume no ALT-Cx control is available
Unable to handle kernel NULL pointer dereference at virtual address 00000138
pgd = c0004000
[00000138] *pgd=00000000
Internal error: Oops: 5 [#1] PREEMPT SMP ARM
Modules linked in:
CPU: 0 Not tainted (3.7.0-02892-g1ebaf4f #631)
PC is at nmk_pmx_enable+0x1bc/0x4d0
LR is at clk_disable+0x40/0x44
[snip]
[<c01d5e50>] (nmk_pmx_enable+0x1bc/0x4d0) from [<c01d3ba8>] (pinmux_enable_setting+0x12c/0x1ec)
[<c01d3ba8>] (pinmux_enable_setting+0x12c/0x1ec) from [<c01d1dc8>] (pinctrl_select_state_locked+0xfc/0x134)
[<c01d1dc8>] (pinctrl_select_state_locked+0xfc/0x134) from [<c01d2814>] (pinctrl_register+0x26c/0x43c)
[<c01d2814>] (pinctrl_register+0x26c/0x43c) from [<c01d668c>] (nmk_pinctrl_probe+0x114/0x238)
[<c01d668c>] (nmk_pinctrl_probe+0x114/0x238) from [<c0211cc4>] (platform_drv_probe+0x28/0x2c)
[<c0211cc4>] (platform_drv_probe+0x28/0x2c) from [<c0210738>] (driver_probe_device+0x84/0x21c)
[<c0210738>] (driver_probe_device+0x84/0x21c) from [<c02109c0>] (__device_attach+0x50/0x54)
[<c02109c0>] (__device_attach+0x50/0x54) from [<c020eb1c>] (bus_for_each_drv+0x54/0x9c)
[<c020eb1c>] (bus_for_each_drv+0x54/0x9c) from [<c0210668>] (device_attach+0x84/0x9c)
[<c0210668>] (device_attach+0x84/0x9c) from [<c020fbac>] (bus_probe_device+0x94/0xb8)
[<c020fbac>] (bus_probe_device+0x94/0xb8) from [<c020e084>] (device_add+0x4f0/0x5bc)
[<c020e084>] (device_add+0x4f0/0x5bc) from [<c0276400>] (of_device_add+0x40/0x48)
[<c0276400>] (of_device_add+0x40/0x48) from [<c0276a98>] (of_platform_device_create_pdata+0x68/0x98)
[<c0276a98>] (of_platform_device_create_pdata+0x68/0x98) from [<c0276bac>] (of_platform_bus_create+0xe4/0x260)
[<c0276bac>] (of_platform_bus_create+0xe4/0x260) from [<c0276bf8>] (of_platform_bus_create+0x130/0x260)
[<c0276bf8>] (of_platform_bus_create+0x130/0x260) from [<c0276d94>] (of_platform_populate+0x6c/0xac)
[<c0276d94>] (of_platform_populate+0x6c/0xac) from [<c04a8224>] (u8500_init_machine+0x78/0x140)
[<c04a8224>] (u8500_init_machine+0x78/0x140) from [<c04a3560>] (customize_machine+0x24/0x30)
[<c04a3560>] (customize_machine+0x24/0x30) from [<c00087b0>] (do_one_initcall+0x130/0x1b0)
[<c00087b0>] (do_one_initcall+0x130/0x1b0) from [<c033ff9c>] (kernel_init+0x138/0x2e8)
[<c033ff9c>] (kernel_init+0x138/0x2e8) from [<c000eb18>] (ret_from_fork+0x14/0x20)
Code: 0a00001b e19400b2 e59a200c e0822000 (e592c000)
---[ end trace 1b75b31a2719ed1c ]---
note: swapper/0[1] exited with preempt_count 1
Kernel panic - not syncing: Attempted to kill init! exitcode=0x0000000b
Signed-off-by: Fabio Baltieri <fabio.baltieri@linaro.org>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
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commit 7bec207427c2efb794 remove sirfsoc_gpio_set_pull function,
this patches takes the feature back by adding sirf,pullups and
sirf,pulldowns prop in dts, and the driver will set the GPIO
pull according to the dts.
Cc: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Barry Song <Baohua.Song@csr.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
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This variable pertains to pinctrl handles not muxes
specifically.
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
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The function at91_dt_node_to_map is ultimately called by the function
pinctrl_get, which is an exported function. Since it is possible that this
function is not called from within a probe function, for safety, the kfree
is converted to a devm_kfree, to both free the data and remove it from the
device in a failure situation.
Acked-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
Signed-off-by: Julia Lawall <Julia.Lawall@lip6.fr>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
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3 is an invalid value for the CAN1_IPP_IND_CANRX_SELECT_INPUT
register. Set it to 2, which correctly selects the GPIO_8 pad.
Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
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If of_get_gpio_flags() returns an error (as in case when GPIO probe is
deferred) the driver would attempt to claim invalid GPIO. It should
propagate the error code up the stack instead so that the probe either
fails or will be retried later (in case of -EPROBE_DEFER).
Cc: stable@vger.kernel.org
Reported-by: Gabor Juhos <juhosg@openwrt.org>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
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If GPIO probing is deferred, the driver tries to claim an invalid GPIO line
which leads to an error message like this:
gpio-keys-polled buttons.2: unable to claim gpio 4294966779, err=-22
gpio-keys-polled: probe of buttons.2 failed with error -22
We should make sure that error code returned by of_get_gpio_flags (including
-EPROBE_DEFER) is propagated up the stack.
Cc: stable@vger.kernel.org
Signed-off-by: Gabor Juhos <juhosg@openwrt.org>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
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Report only the position of the first finger as absolute non-MT coordinates,
instead of reporting both fingers alternatively. Actual MT events are
unaffected.
This fixes horizontal and improves vertical scrolling with the touchpad.
Cc: stable@vger.kernel.org
Signed-off-by: Christophe TORDEUX <christophe@tordeux.net>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
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regulator_can_change_voltage
Regulator drivers with continuous_voltage_range flag set allows not setting
n_voltages. Thus if continuous_voltage_range is set, check the constraint range
instead.
Signed-off-by: Axel Lin <axel.lin@ingics.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
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The function sec_reg_read invokes regmap_read which expects unsigned int *
as the destination address. The existing driver is passing address of local
variable "val" which is u8. This causes the stack corruption and following
dump is observed during probe.
Hence change "val" from u8 to unsigned int.
Unable to handle kernel paging request at virtual address 02410020
pgd = c0004000
[02410020] *pgd=00000000
Internal error: Oops: 80000005 [#1] PREEMPT SMP ARM
Modules linked in:
CPU: 0 Not tainted (3.6.0-00696-g98a28b18-dirty #27)
PC is at 0x2410020
LR is at _regulator_get_voltage+0x3c/0x70
pc : [<02410020>] lr : [<c02395d4>] psr: 20000013
sp : cf839b68 ip : 00000000 fp : cf92d410
r10: 0000cfd0 r9 : c06d9878 r8 : 0000f0a0
r7 : cf839b70 r6 : cf92d400 r5 : 00000011 r4 : cf000000
r3 : 02410020 r2 : 00000000 r1 : 00000048 r0 : cf000000
Flags: nzCv IRQs on FIQs on Mode SVC_32 ISA ARM Segment kernel
...........................
.................................
[<c02395d4>] (_regulator_get_voltage+0x3c/0x70) from [<c023ad80>] (print_constraints+0x50/0x36c)
[<c023ad80>] (print_constraints+0x50/0x36c) from [<c023e504>] (set_machine_constraints+0xe8/0x2b0)
[<c023e504>] (set_machine_constraints+0xe8/0x2b0) from [<c023e9c8>] (regulator_register+0x2fc/0x604)
[<c023e9c8>] (regulator_register+0x2fc/0x604) from [<c049d628>] (s5m8767_pmic_probe+0x688/0x718)
[<c049d628>] (s5m8767_pmic_probe+0x688/0x718) from [<c029915c>] (platform_drv_probe+0x18/0x1c)
[<c029915c>] (platform_drv_probe+0x18/0x1c) from [<c0297dd0>] (really_probe+0x68/0x1f4)
[<c0297dd0>] (really_probe+0x68/0x1f4) from [<c0298070>] (driver_probe_device+0x30/0x48)
Signed-off-by: Inderpal Singh <inderpal.singh@linaro.org>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
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Pull i2c __dev* attribute removal from Wolfram Sang:
"The squashed patches from Bill to get rid of the __dev* annotations in
the i2c subsystem. I couldn't include it in my previous pull request
due to some dependency with the mfd subsystem. I had this patch in
linux-next for two days before rc1 and nothing popped up."
* 'i2c-embedded/for-next' of git://git.pengutronix.de/git/wsa/linux:
i2c: remove __dev* attributes from subsystem
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controls API failures"
Commit f0ed2ce840b3 ("[media] uvcvideo: Set error_idx properly for
extended controls API failures") causes user space to behave incorrectly
on one of my test machines (there is no sound under KDE 4.9.4 using
pulseaudio and there is a knotify4 process occupying one of the CPU
cores 100% of the time). Reverting that commit entirely fixes the
problem for me.
However, commit f0ed2ce840b3 appears to do more than it follows from its
changelog, because the changelog only says about the changes related to
ctrls->error_idx, while the commit additionally changes error codes
returned by various functions in uvc_ctrl.c and uvc_v4l2.c. It turns
out that the changes of the returned error codes confuse the user spce,
so it is sufficient to revert the part of commit f0ed2ce840b3 not
mentioned in its changelog to fix the problem.
[ 'ENOENT' is not a valid error return from an ioctl to begin with, and
I don't understand how anybody ever even thought it would be. - Linus ]
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Cc: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Cc: Mauro Carvalho Chehab <mchehab@redhat.com>
Cc: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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Also adds GK106 to chipsets known by ucode.
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
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Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
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This fixes suspend/resume on at least Quadro 400.
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
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Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
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Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
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Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
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Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
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Modesetting seems to work alright, as does graphics (using binary driver
fuc from nve7...).
Lots to be done no doubt, but this'll get an image on the screen for
people.
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
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CONFIG_HOTPLUG is going away as an option. As result the __dev*
markings will be going away.
Remove use of __devinit, __devexit_p, __devinitdata, __devinitconst,
and __devexit.
Signed-off-by: Bill Pemberton <wfp5p@virginia.edu>
Acked-by: Peter Korsgaard <peter.korsgaard@barco.com> (for ocores and mux-gpio)
Acked-by: Havard Skinnemoen <hskinnemoen@gmail.com> (for i2c-gpio)
Acked-by: Guan Xuetao <gxt@mprc.pku.edu.cn> (for puf3)
Acked-by: Barry Song <baohua.song@csr.com> (for sirf)
Reviewed-by: Jean Delvare <khali@linux-fr.org>
[wsa: Fixed "foo* bar" flaws while we are here]
Signed-off-by: Wolfram Sang <w.sang@pengutronix.de>
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Result of DIV_ROUND_CLOSEST is undefined for negative dividends if the divisor
variable type is unsigned. Fix by declaring divisor as signed variable.
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Acked-by: Jean Delvare <khali@linux-fr.org>
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Remove some __dev* markings that snuck in the 3.8-rc1 merge window in
the drivers/net/* directory.
Cc: Bill Pemberton <wfp5p@virginia.edu>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
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If an LM73 device does not exist on an I2C bus, attempts to communicate
with the device result in an error code returned from the i2c read/write
functions. The current lm73 driver casts that return value from a s32
type to a s16 type, then converts it to a temperature in celsius.
Because negative temperatures are valid, it is difficult to distinguish
between an error code printed to the response buffer and a negative
temperature recorded by the sensor.
The solution is to evaluate the return value from the i2c functions
before performing any temperature calculations. If the i2c function did
not succeed, the error code should be passed back through the virtual
file system layer instead of being printed into the response buffer.
Before:
$ cat /sys/class/hwmon/hwmon0/device/temp1_input
-46
After:
$ cat /sys/class/hwmon/hwmon0/device/temp1_input
cat: read error: No such device or address
Signed-off-by: Chris Verges <kg4ysn@gmail.com>
Cc: stable@vger.kernel.org
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
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Pull watchdog updates from Wim Van Sebroeck:
"This includes some fixes and code improvements (like
clk_prepare_enable and clk_disable_unprepare), conversion from the
omap_wdt and twl4030_wdt drivers to the watchdog framework, addition
of the SB8x0 chipset support and the DA9055 Watchdog driver and some
OF support for the davinci_wdt driver."
* git://www.linux-watchdog.org/linux-watchdog: (22 commits)
watchdog: mei: avoid oops in watchdog unregister code path
watchdog: Orion: Fix possible null-deference in orion_wdt_probe
watchdog: sp5100_tco: Add SB8x0 chipset support
watchdog: davinci_wdt: add OF support
watchdog: da9052: Fix invalid free of devm_ allocated data
watchdog: twl4030_wdt: Change TWL4030_MODULE_PM_RECEIVER to TWL_MODULE_PM_RECEIVER
watchdog: remove depends on CONFIG_EXPERIMENTAL
watchdog: Convert dev_printk(KERN_<LEVEL> to dev_<level>(
watchdog: DA9055 Watchdog driver
watchdog: omap_wdt: eliminate goto
watchdog: omap_wdt: delete redundant platform_set_drvdata() calls
watchdog: omap_wdt: convert to devm_ functions
watchdog: omap_wdt: convert to new watchdog core
watchdog: WatchDog Timer Driver Core: fix comment
watchdog: s3c2410_wdt: use clk_prepare_enable and clk_disable_unprepare
watchdog: imx2_wdt: Select the driver via ARCH_MXC
watchdog: cpu5wdt.c: add missing del_timer call
watchdog: hpwdt.c: Increase version string
watchdog: Convert twl4030_wdt to watchdog core
davinci_wdt: preparation for switch to common clock framework
...
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git://git.kernel.org/pub/scm/linux/kernel/git/agk/linux-dm
Pull dm update from Alasdair G Kergon:
"Miscellaneous device-mapper fixes, cleanups and performance
improvements.
Of particular note:
- Disable broken WRITE SAME support in all targets except linear and
striped. Use it when kcopyd is zeroing blocks.
- Remove several mempools from targets by moving the data into the
bio's new front_pad area(which dm calls 'per_bio_data').
- Fix a race in thin provisioning if discards are misused.
- Prevent userspace from interfering with the ioctl parameters and
use kmalloc for the data buffer if it's small instead of vmalloc.
- Throttle some annoying error messages when I/O fails."
* tag 'dm-3.8-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/agk/linux-dm: (36 commits)
dm stripe: add WRITE SAME support
dm: remove map_info
dm snapshot: do not use map_context
dm thin: dont use map_context
dm raid1: dont use map_context
dm flakey: dont use map_context
dm raid1: rename read_record to bio_record
dm: move target request nr to dm_target_io
dm snapshot: use per_bio_data
dm verity: use per_bio_data
dm raid1: use per_bio_data
dm: introduce per_bio_data
dm kcopyd: add WRITE SAME support to dm_kcopyd_zero
dm linear: add WRITE SAME support
dm: add WRITE SAME support
dm: prepare to support WRITE SAME
dm ioctl: use kmalloc if possible
dm ioctl: remove PF_MEMALLOC
dm persistent data: improve improve space map block alloc failure message
dm thin: use DMERR_LIMIT for errors
...
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git://git.kernel.org/pub/scm/linux/kernel/git/roland/infiniband
Pull more infiniband changes from Roland Dreier:
"Second batch of InfiniBand/RDMA changes for 3.8:
- cxgb4 changes to fix lookup engine hash collisions
- mlx4 changes to make flow steering usable
- fix to IPoIB to avoid pinning dst reference for too long"
* tag 'rdma-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/roland/infiniband:
RDMA/cxgb4: Fix bug for active and passive LE hash collision path
RDMA/cxgb4: Fix LE hash collision bug for passive open connection
RDMA/cxgb4: Fix LE hash collision bug for active open connection
mlx4_core: Allow choosing flow steering mode
mlx4_core: Adjustments to Flow Steering activation logic for SR-IOV
mlx4_core: Fix error flow in the flow steering wrapper
mlx4_core: Add QPN enforcement for flow steering rules set by VFs
cxgb4: Add LE hash collision bug fix path in LLD driver
cxgb4: Add T4 filter support
IPoIB: Call skb_dst_drop() once skb is enqueued for sending
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We already have the same delay in i2c_w8, but it was missing from i2c_w1,
adding this delay fixes the Microsoft VX-3000 camera often (but not always)
streaming video data with a very green-ish tint.
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
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We must wait for the previous i2c write to complete before starting a new
one. Sofar we were getting away with this, but it seems that some parts
of the usb-subsystem has been sped up making us go to fast :)
This fixes streaming on sn9c103 based cams not working with an
"i2c_w error" error.
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
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Add the USB ID for the Kinect for Windows RGB camera so it can be used
with the gspca_kinect driver.
Signed-off-by: Jacob Schloss <jacob.schloss@unlimitedautomata.com>
Signed-off-by: Antonio Ospite <ospite@studenti.unina.it>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
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Commit 96442e42429 (tuntap: choose the txq based on rxq)
added a per tun_struct kmem_cache.
As soon as several tun_struct are used, we get an error
because two caches cannot have same name.
Use the default kmalloc()/kfree_rcu(), as it reduce code
size and doesn't have performance impact here.
Reported-by: Paul Moore <pmoore@redhat.com>
Tested-by: Paul Moore <pmoore@redhat.com>
Signed-off-by: Eric Dumazet <edumazet@google.com>
Acked-by: Stephen Hemminger <shemminger@vyatta.com>
Acked-by: Jason Wang <jasowang@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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There is a typo here so we do a double lock instead of an unlock.
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Acked-by: David Woodhouse <David.Woodhouse@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Rename stripe_map_discard to stripe_map_range and reuse it for WRITE
SAME bio processing.
Signed-off-by: Mike Snitzer <snitzer@redhat.com>
Signed-off-by: Alasdair G Kergon <agk@redhat.com>
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This patch removes map_info from bio-based device mapper targets.
map_info is still used for request-based targets.
Signed-off-by: Mikulas Patocka <mpatocka@redhat.com>
Signed-off-by: Alasdair G Kergon <agk@redhat.com>
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Eliminate struct map_info from dm-snap.
map_info->ptr was used in dm-snap to indicate if the bio was tracked.
If map_info->ptr was non-NULL, the bio was linked in tracked_chunk_hash.
This patch removes the use of map_info->ptr. We determine if the bio was
tracked based on hlist_unhashed(&c->node). If hlist_unhashed is true,
the bio is not tracked, if it is false, the bio is tracked.
Signed-off-by: Mikulas Patocka <mpatocka@redhat.com>
Signed-off-by: Alasdair G Kergon <agk@redhat.com>
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This patch removes endio_hook_pool from dm-thin and uses per-bio data instead.
This patch removes any use of map_info in preparation for the next patch
that removes map_info from bio-based device mapper.
Signed-off-by: Mikulas Patocka <mpatocka@redhat.com>
Signed-off-by: Alasdair G Kergon <agk@redhat.com>
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Don't use map_info any more in dm-raid1.
map_info was used for writes to hold the region number. For this purpose
we add a new field dm_bio_details to dm_raid1_bio_record.
map_info was used for reads to hold a pointer to dm_raid1_bio_record (if
the pointer was non-NULL, bio details were saved; if the pointer was
NULL, bio details were not saved). We use
dm_raid1_bio_record.details->bi_bdev for this purpose. If bi_bdev is
NULL, details were not saved, if bi_bdev is non-NULL, details were
saved.
Signed-off-by: Mikulas Patocka <mpatocka@redhat.com>
Signed-off-by: Alasdair G Kergon <agk@redhat.com>
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Replace map_info with a per-bio structure "struct per_bio_data" in dm-flakey.
Signed-off-by: Mikulas Patocka <mpatocka@redhat.com>
Signed-off-by: Alasdair G Kergon <agk@redhat.com>
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Rename struct read_record to bio_record in dm-raid1.
In the following patch, the structure will be used for both read and
write bios, so rename it.
Signed-off-by: Mikulas Patocka <mpatocka@redhat.com>
Signed-off-by: Alasdair G Kergon <agk@redhat.com>
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This patch moves target_request_nr from map_info to dm_target_io and
makes it accessible with dm_bio_get_target_request_nr.
This patch is a preparation for the next patch that removes map_info.
Signed-off-by: Mikulas Patocka <mpatocka@redhat.com>
Signed-off-by: Alasdair G Kergon <agk@redhat.com>
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Replace tracked_chunk_pool with per_bio_data in dm-snap.
Signed-off-by: Mikulas Patocka <mpatocka@redhat.com>
Signed-off-by: Alasdair G Kergon <agk@redhat.com>
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Replace io_mempool with per_bio_data in dm-verity.
Signed-off-by: Mikulas Patocka <mpatocka@redhat.com>
Signed-off-by: Alasdair G Kergon <agk@redhat.com>
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Replace read_record_pool with per_bio_data in dm-raid1.
Signed-off-by: Mikulas Patocka <mpatocka@redhat.com>
Signed-off-by: Alasdair G Kergon <agk@redhat.com>
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Introduce a field per_bio_data_size in struct dm_target.
Targets can set this field in the constructor. If a target sets this
field to a non-zero value, "per_bio_data_size" bytes of auxiliary data
are allocated for each bio submitted to the target. These data can be
used for any purpose by the target and help us improve performance by
removing some per-target mempools.
Per-bio data is accessed with dm_per_bio_data. The
argument data_size must be the same as the value per_bio_data_size in
dm_target.
If the target has a pointer to per_bio_data, it can get a pointer to
the bio with dm_bio_from_per_bio_data() function (data_size must be the
same as the value passed to dm_per_bio_data).
Signed-off-by: Mikulas Patocka <mpatocka@redhat.com>
Signed-off-by: Alasdair G Kergon <agk@redhat.com>
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Add WRITE SAME support to dm-io and make it accessible to
dm_kcopyd_zero(). dm_kcopyd_zero() provides an asynchronous interface
whereas the blkdev_issue_write_same() interface is synchronous.
WRITE SAME is a SCSI command that can be leveraged for more efficient
zeroing of a specified logical extent of a device which supports it.
Only a single zeroed logical block is transfered to the target for each
WRITE SAME and the target then writes that same block across the
specified extent.
The dm thin target uses this.
Signed-off-by: Mike Snitzer <snitzer@redhat.com>
Signed-off-by: Alasdair G Kergon <agk@redhat.com>
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The linear target can already support WRITE SAME requests so signal
this by setting num_write_same_requests to 1.
Signed-off-by: Mike Snitzer <snitzer@redhat.com>
Signed-off-by: Alasdair G Kergon <agk@redhat.com>
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WRITE SAME bios have a payload that contain a single page. When
cloning WRITE SAME bios DM has no need to modify the bi_io_vec
attributes (and doing so would be detrimental). DM need only alter the
start and end of the WRITE SAME bio accordingly.
Rather than duplicate __clone_and_map_discard, factor out a common
function that is also used by __clone_and_map_write_same.
Signed-off-by: Mike Snitzer <snitzer@redhat.com>
Signed-off-by: Alasdair G Kergon <agk@redhat.com>
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