NeilBrown
5a85071c2c
md: use a separate bio_set for synchronous IO. ...
md devices allocate a bio_set and use it for two
distinct purposes.
mddev->bio_set is used to clone bios as part of sending
upper level requests down to lower level devices,
and it is also use for synchronous IO such as superblock
and bitmap updates, and for correcting read errors.
This multiple usage can lead to deadlocks. It is likely
that cloned bios might be queued for write and to be
waiting for a metadata update before the write can be permitted.
If the cloning exhausted mddev->bio_set, the metadata update
may not be able to proceed.
This scenario has been seen during heavy testing, with lots of IO and
lots of memory pressure.
Address this by adding a new bio_set specifically for synchronous IO.
All synchronous IO goes directly to the underlying device and is not
queued at the md level, so request using entries from the new
mddev->sync_set will complete in a timely fashion.
Requests that use mddev->bio_set will sometimes need to wait
for synchronous IO, but will no longer risk deadlocking that iO.
Also: small simplification in mddev_put(): there is no need to
wait until the spinlock is released before calling bioset_free().
Signed-off-by: NeilBrown <neilb@suse.com>
Signed-off-by: Shaohua Li <shli@fb.com>
2017-06-21 10:52:36 -07:00
IOMMU Fixes for Linux v4.12-rc4
2017-06-09 22:30:55 -07:00
libata: fix error checking in in ata_parse_force_one()
2017-05-31 14:26:26 -04:00
Merge branches 'intel_pstate' and 'pm-sleep'
2017-06-09 01:25:16 +02:00
Fix loop device flush before configure v3
2017-06-08 08:04:18 -06:00
Bluetooth: hci_ldisc: Add protocol check to hci_uart_tx_wakeup()
2017-04-30 12:22:14 +02:00
Improve performance by using a lockless update mechanism suggested by
2017-06-11 12:02:01 -07:00
Sort of on the quieter side this time, which is probably due more
2017-05-10 13:38:18 -07:00
Merge branch 'timers-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
2017-05-12 10:43:25 -07:00
Merge branches 'intel_pstate' and 'pm-sleep'
2017-06-09 01:25:16 +02:00
Merge branches 'pm-domains', 'pm-cpuidle', 'pm-sleep' and 'powercap'
2017-05-09 23:21:46 +02:00
virtio: fixes, cleanups, performance
2017-05-10 11:33:08 -07:00
device-dax: fix 'dax' device filesystem inode destruction crash
2017-06-09 08:50:49 -07:00
dmaengine: pl330: fix warning in pl330_remove
2017-06-02 11:49:44 +05:30
EDAC, amd64: Fix reporting of Chip Select sizes on Fam17h
2017-05-03 16:27:36 +02:00
Char/Misc driver fixes for 4.12-rc5
2017-06-11 11:29:15 -07:00
fpga fr br: update supported version numbers
2017-04-26 11:38:56 +02:00
gpio: mvebu: fix gpio bank registration when pwm is used
2017-06-09 09:38:27 +02:00
Merge branch 'vmwgfx-fixes-4.12' of git://people.freedesktop.org/~thomash/linux into drm-fixes
2017-06-09 13:12:02 +10:00
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/hid
2017-06-02 09:23:56 -07:00
char/misc patches for 4.12-rc1
2017-05-04 19:15:35 -07:00
hwmon: (aspeed-pwm-tacho) make fan/pwm names start with index 1
2017-06-03 03:55:43 -07:00
drivers/hwtracing/intel_th/msu.c: use set_memory.h header
2017-05-08 17:15:14 -07:00
i2c: designware: Fix bogus sda_hold_time due to uninitialized vars
2017-05-22 19:22:19 -07:00
ide: don't call memcpy with the same source and destination
2017-05-08 17:36:39 -04:00
x86/intel_idle: add Gemini Lake support
2017-05-01 23:17:37 +02:00
First set of IIO fixes in the 4.12 cycle.
2017-05-22 21:53:09 +02:00
RDMA/SA: Fix kernel panic in CMA request handler flow
2017-06-01 17:20:14 -04:00
Input: synaptics-rmi4 - register F03 port as pass-through serio
2017-06-09 09:57:19 -07:00
iommu/of: Ignore all errors except EPROBE_DEFER
2017-05-30 11:31:32 +02:00
Xtensa fixes for v4.12-rc6
2017-06-13 15:09:10 +09:00
mISDN: Fix a sleep-in-atomic bug
2017-06-01 14:49:47 -04:00
leds: pca955x: Correct I2C Functionality
2017-05-22 21:12:44 +02:00
lightnvm: fix bad back free on error path
2017-05-04 07:53:04 -06:00
DeviceTree for 4.12:
2017-05-05 19:33:07 -07:00
mailbox: handle empty message in tx_tick
2017-04-27 16:20:04 +05:30
md: use a separate bio_set for synchronous IO.
2017-06-21 10:52:36 -07:00
media fixes for v4.12-rc4
2017-06-06 09:37:44 -07:00
Merge tag 'at91-4.12-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/abelloni/linux into fixes
2017-06-01 17:07:31 -07:00
scsi: mpt: Move scsi_remove_host() out of mptscsih_remove_host()
2017-04-24 18:21:17 -04:00
mfd: axp20x: Support AXP803 variant
2017-04-27 11:54:49 +01:00
Char/Misc driver fixes for 4.12-rc5
2017-06-11 11:29:15 -07:00
This pull request contains fixes to make the WiFi work again for the ARM64
2017-05-26 09:05:35 -07:00
mtd: nand: make nand_ooblayout_lp_hamming_ops static
2017-05-22 09:42:29 +02:00
net: stmmac: fix a broken u32 less than zero check
2017-06-06 16:26:28 -04:00
Merge branch 'libnvdimm-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/nvdimm/nvdimm
2017-05-12 15:43:10 -07:00
nvme: relax APST default max latency to 100ms
2017-06-07 11:08:55 +02:00
ARM: SoC driver updates
2017-05-09 10:01:15 -07:00
iommu/of: Ignore all errors except EPROBE_DEFER
2017-05-30 11:31:32 +02:00
PCI/PM: Add needs_resume flag to avoid suspend complete optimization
2017-05-23 14:18:17 -05:00
Annotation of module parameters that specify device settings
2017-05-10 19:13:03 -07:00
drivers/perf: arm_pmu_acpi: avoid perf IRQ init when guest PMU is off
2017-05-30 12:40:03 +01:00
phy: qualcomm: phy-qcom-qmp: fix application of sizeof to pointer
2017-06-01 15:03:41 +05:30
pinctrl: sunxi: Fix SPDIF function name for A83T
2017-05-23 11:31:27 +02:00
goldfish_pipe: use GFP_ATOMIC under spin lock
2017-05-25 18:26:11 +02:00
power supply and reset changes for the v4.12 series (part 2)
2017-05-12 12:02:21 -07:00
PowerCap: Fix an error code in powercap_register_zone()
2017-05-14 13:30:05 +02:00
Merge branch 'timers-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
2017-05-01 16:15:18 -07:00
char/misc patches for 4.12-rc1
2017-05-04 19:15:35 -07:00
Merge remote-tracking branch 'regulator/topic/vctrl' into regulator-next
2017-04-30 22:17:44 +09:00
virtio: fixes, cleanups, performance
2017-05-10 11:33:08 -07:00
reset: hi6220: Set module license so that it can be loaded
2017-05-24 10:53:41 +02:00
virtio: fixes, cleanups, performance
2017-05-10 11:33:08 -07:00
Merge branches 'pm-sleep' and 'powercap'
2017-05-22 20:32:05 +02:00
s390/zcrypt: Fix blocking queue device after unbind/bind.
2017-06-02 14:30:12 +02:00
SCSI fixes on 20170610
2017-06-11 11:21:08 -07:00
ARM: SoC fixes (and a cross-arch dt-include fix)
2017-05-19 13:36:56 -07:00
Merge remote-tracking branches 'spi/topic/ti-qspi' and 'spi/topic/xlp' into spi-next
2017-04-26 15:58:22 +01:00
Staging/IIO fixes for 4.12-rc5
2017-06-11 11:25:51 -07:00
iscsi-target: Always wait for kthread_should_stop() before kthread exit
2017-05-31 15:12:57 -07:00
Linux 4.12-rc1
2017-05-18 23:54:47 -07:00
thermal: broadcom: ns-thermal: default on iProc SoCs
2017-05-23 20:09:34 -07:00
Revert "tty: fix port buffer locking"
2017-06-04 10:23:25 +02:00
uio: fix incorrect memory leak cleanup
2017-05-16 23:06:41 +02:00
usb: fixes for v4.12-rc4
2017-06-03 09:47:16 +09:00
uwb: fix device quirk on big-endian hosts
2017-05-17 11:27:41 +02:00
powerpc updates for 4.12 part 1.
2017-05-05 11:36:44 -07:00
mm: support __GFP_REPEAT in kvmalloc_node for >32kB
2017-05-08 17:15:12 -07:00
fbdev changes for v4.12:
2017-05-11 11:12:26 -07:00
drivers/virt/fsl_hypervisor.c: use get_user_pages_unlocked()
2017-05-08 17:15:10 -07:00
virtio: allow extra context per descriptor
2017-05-02 23:41:43 +03:00
watchdog: bcm281xx: Fix use of uninitialized spinlock.
2017-05-19 10:42:25 +02:00
xen: fix for 4.12 rc5
2017-06-09 09:59:51 -07:00
Merge branch 'tee/initial-merge' into fixes
2017-05-10 21:03:31 +02:00
5a85071c2c