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d57f9da890
linux-next/drivers
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Damien Le Moal d57f9da890 dm zoned: Fix target BIO completion handling 
struct bioctx includes the ref refcount_t to track the number of I/O
fragments used to process a target BIO as well as ensure that the zone
of the BIO is kept in the active state throughout the lifetime of the
BIO. However, since decrementing of this reference count is done in the
target .end_io method, the function bio_endio() must be called multiple
times for read and write target BIOs, which causes problems with the
value of the __bi_remaining struct bio field for chained BIOs (e.g. the
clone BIO passed by dm core is large and splits into fragments by the
block layer), resulting in incorrect values and inconsistencies with the
BIO_CHAIN flag setting. This is turn triggers the BUG_ON() call:

BUG_ON(atomic_read(&bio->__bi_remaining) <= 0);

in bio_remaining_done() called from bio_endio().

Fix this ensuring that bio_endio() is called only once for any target
BIO by always using internal clone BIOs for processing any read or
write target BIO. This allows reference counting using the target BIO
context counter to trigger the target BIO completion bio_endio() call
once all data, metadata and other zone work triggered by the BIO
complete.

Overall, this simplifies the code too as the target .end_io becomes
unnecessary and differences between read and write BIO issuing and
completion processing disappear.

Fixes: 3b1a94c88b ("dm zoned: drive-managed zoned block device target")
Cc: stable@vger.kernel.org
Signed-off-by: Damien Le Moal <damien.lemoal@wdc.com>
Signed-off-by: Mike Snitzer <snitzer@redhat.com>
2018-12-07 16:04:31 -05:00
..
accessibility
acpi - Cortex-A76 erratum workaround 2018-11-30 18:39:07 -08:00
amba
android binder: fix race that allows malicious free of live buffer 2018-11-26 20:01:47 +01:00
ata libata: blacklist SAMSUNG MZ7TD256HAFV-000L9 SSD 2018-11-12 12:44:19 -07:00
atm firestream: fix spelling mistake: "Inititing" -> "Initializing" 2018-11-27 15:32:06 -08:00
auxdisplay The Compiler Attributes series 2018-11-01 18:34:46 -07:00
base devres: Align data[] to ARCH_KMALLOC_MINALIGN 2018-11-11 11:40:04 -08:00
bcma
block for-linus-20181115 2018-11-16 09:31:59 -06:00
bluetooth Merge branch 'work.tty-ioctl' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs 2018-10-24 14:43:41 +01:00
bus ARM: SoC driver updates for 4.17 2018-10-29 15:16:01 -07:00
cdrom gdrom: fix mistake in assignment of error 2018-10-25 11:17:40 -06:00
char RTC for 4.20 2018-10-27 09:24:24 -07:00
clk clk: qcom: gcc: Fix board clock node name 2018-11-09 14:13:55 -08:00
clocksource Merge branch 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip 2018-11-11 16:41:50 -06:00
connector
cpufreq cpufreq: ti-cpufreq: Only register platform_device when supported 2018-11-19 11:26:06 +01:00
cpuidle ARM: cpuidle: Convert to use cpuidle_register|unregister() 2018-11-08 18:53:00 +01:00
crypto crypto: hisilicon - Fix reference after free of memories on error path 2018-11-09 17:35:43 +08:00
dax
dca
devfreq
dio
dma dmaengine: at_hdmac: fix module unloading 2018-11-29 19:49:41 +05:30
dma-buf udmabuf: set read/write flag when exporting 2018-11-16 08:50:53 +01:00
edac * skx_edac: Address translation for NVDIMMs (Tony Luck and Qiuxu Zhuo) 2018-11-02 11:17:22 -07:00
eisa
extcon
firewire
firmware efi: Prevent GICv3 WARN() by mapping the memreserve table before first use 2018-11-27 13:50:20 +01:00
fmc
fpga fpga: add devm_fpga_region_create 2018-10-16 11:13:50 +02:00
fsi fsi: fsi-scom.c: Remove duplicate header 2018-11-26 10:13:04 +11:00
gnss gnss: sirf: fix synchronous write timeout 2018-11-14 20:37:41 +01:00
gpio ARM: SoC fixes 2018-12-02 12:19:44 -08:00
gpu - mst: Don't try to validate ports while destroying them (Lyude) 2018-11-29 10:11:15 +10:00
hid Staging and IIO driver fixes for 4.20-rc5 2018-11-30 12:23:44 -08:00
hsi
hv Drivers: hv: vmbus: check the creation_status in vmbus_establish_gpadl() 2018-11-26 20:33:56 +01:00
hwmon hwmon: (w83795) temp4_type has writable permission 2018-11-18 14:34:56 -08:00
hwspinlock
hwtracing stm class: Use memcat_p() 2018-10-11 12:12:55 +02:00
i2c i2c: nvidia-gpu: make pm_ops static 2018-11-09 17:56:44 +01:00
ide
idle Merge branch 'perf-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip 2018-10-23 13:32:18 +01:00
iio iio/hid-sensors: Fix IIO_CHAN_INFO_RAW returning wrong values for signed numbers 2018-11-16 11:42:12 +00:00
infiniband RDMA/mlx5: Initialize return variable in case pagefault was skipped 2018-11-29 15:16:45 -07:00
input Merge branch 'xarray' of git://git.infradead.org/users/willy/linux-dax 2018-10-28 11:35:40 -07:00
iommu iommu/vt-d: Use memunmap to free memremap 2018-11-22 17:02:21 +01:00
ipack
irqchip irqchip/irq-mvebu-sei: Fix a NULL vs IS_ERR() bug in probe function 2018-11-01 12:38:48 +01:00
isdn Merge branch 'work.afs' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs 2018-11-01 19:58:52 -07:00
leds LED fixes for 4.20-rc2 2018-11-08 17:49:04 -06:00
lightnvm lightnvm: pblk: guarantee that backpointer is respected on writer stall 2018-10-09 08:25:08 -06:00
macintosh memblock: stop using implicit alignment to SMP_CACHE_BYTES 2018-10-31 08:54:16 -07:00
mailbox - Convert print users to use the %pOFn format specifier 2018-10-29 10:30:44 -07:00
mcb
md dm zoned: Fix target BIO completion handling 2018-12-07 16:04:31 -05:00
media media: ipu3-cio2: Use cio2_queues_exit 2018-11-06 07:11:59 -05:00
memory
memstick
message
mfd chrome-platform for v4.20 2018-10-31 16:47:55 -07:00
misc misc: mic/scif: fix copy-paste error in scif_create_remote_lookup 2018-11-27 09:00:38 +01:00
mmc mmc: sdhci-pci: Workaround GLK firmware failing to restore the tuning value 2018-11-19 14:11:07 +01:00
mtd mtd: nand: Fix memory allocation in nanddev_bbt_init() 2018-11-28 15:41:50 +01:00
mux This is the bulk of GPIO changes for the v4.20 series: 2018-10-23 08:45:05 +01:00
net Merge branch '1GbE' of git://git.kernel.org/pub/scm/linux/kernel/git/jkirsher/net-queue 2018-11-28 11:33:35 -08:00
nfc NFC: nfcmrvl_uart: fix OF child-node lookup 2018-10-23 13:28:53 -05:00
ntb ntb: idt: Alter the driver info comments 2018-11-01 10:33:12 -04:00
nubus
nvdimm libnvdimm for 4.20 2018-10-25 06:31:56 -07:00
nvme nvme-rdma: fix double freeing of async event data 2018-11-30 17:23:23 +01:00
nvmem nvmem: core: fix regression in of_nvmem_cell_get() 2018-11-11 09:15:29 -08:00
of Devicetree fixes for 4.20-rc: 2018-11-09 16:41:58 -06:00
opp OPP: Fix parsing of multiple phandles in "operating-points-v2" property 2018-11-23 10:47:21 +05:30
oprofile
parisc parisc: Add alternative coding infrastructure 2018-10-17 17:22:26 +02:00
parport
pci Merge remote-tracking branch 'lorenzo/pci/controller-fixes' into for-linus 2018-11-30 23:42:08 -06:00
pcmcia powerpc updates for 4.20 2018-10-26 14:36:21 -07:00
perf arm64 updates for 4.20: 2018-10-22 17:30:06 +01:00
phy phy: qcom-qusb2: Fix HSTX_TRIM tuning with fused value for SDM845 2018-11-21 13:13:58 +05:30
pinctrl pinctrl: meson: fix meson8b ao pull register bits 2018-11-05 09:33:22 +01:00
platform platform-drivers-x86 for v4.20-1 2018-11-01 08:42:21 -07:00
pnp
power Devicetree updates for 4.20: 2018-10-26 12:09:58 -07:00
powercap Merge branch 'perf-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip 2018-10-23 13:32:18 +01:00
pps
ps3
ptp ptp: drop redundant kasprintf() to create worker name 2018-10-28 19:20:06 -07:00
pwm pwm: lpss: Only set update bit if we are actually changing the settings 2018-10-16 13:16:15 +02:00
rapidio
ras
regulator regulator: Regulator updates for next release 2018-10-23 01:54:44 +01:00
remoteproc remoteproc: qcom: q6v5-mss: Register segments/dumpfn for coredump 2018-10-19 12:54:03 -07:00
reset ARM: SoC driver updates for 4.17 2018-10-29 15:16:01 -07:00
rpmsg
rtc Staging and IIO driver fixes for 4.20-rc5 2018-11-30 12:23:44 -08:00
s390 s390 updates for 4.20-rc5 2018-11-29 10:10:42 -08:00
sbus
scsi SCSI fixes on 20181121 2018-11-22 08:31:46 -08:00
sfi mm: remove include/linux/bootmem.h 2018-10-31 08:54:16 -07:00
sh
siox
slimbus slimbus: ngd: remove unnecessary check 2018-11-07 14:59:28 +01:00
sn
soc soc: ti: QMSS: Fix usage of irq_set_affinity_hint 2018-11-02 11:22:09 -07:00
soundwire
spi spi: Fixes for v4.20 2018-11-28 08:33:55 -08:00
spmi
ssb
staging Staging and IIO driver fixes for 4.20-rc5 2018-11-30 12:23:44 -08:00
target scsi: target/core: Avoid that a kernel oops is triggered when COMPARE AND WRITE fails 2018-11-05 22:16:00 -05:00
tc TC: Set DMA masks for devices 2018-10-11 09:16:44 -07:00
tee
thermal Merge branch 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/rzhang/linux 2018-10-31 11:28:12 -07:00
thunderbolt thunderbolt: Prevent root port runtime suspend during NVM upgrade 2018-11-26 20:38:49 +01:00
tty TTY/Serial fixes for 4.20-rc2 2018-11-10 13:32:14 -06:00
uio uio: Fix an Oops on load 2018-11-11 09:21:46 -08:00
usb USB: fixes for v4.20-rc4 2018-11-29 11:39:35 +01:00
uwb
vfio VFIO updates for v4.20 2018-10-31 11:01:38 -07:00
vhost virtio, vhost: fixes, tweaks 2018-11-01 14:42:49 -07:00
video fbdev changes for v4.20: 2018-10-31 11:41:37 -07:00
virt
virtio virtio-balloon: VIRTIO_BALLOON_F_PAGE_POISON 2018-10-24 20:57:55 -04:00
visorbus
vlynq
vme
w1 w1: IAD Register is yet readable trough iad sys file. Fix snprintf (%u for unsigned, count for max size). 2018-10-15 20:50:32 +02:00
watchdog watchdog: ts4800: release syscon device node in ts4800_wdt_probe() 2018-10-22 10:16:28 +02:00
xen xen: fixes for 4.20-rc5 2018-12-02 12:15:55 -08:00
zorro
Kconfig
Makefile