Igor Konopko a96de64a24 lightnvm: pblk: simplify partial read path ... This patch changes the approach to handling partial read path. In old approach merging of data from round buffer and drive was fully made by drive. This had some disadvantages - code was complex and relies on bio internals, so it was hard to maintain and was strongly dependent on bio changes. In new approach most of the handling is done mostly by block layer functions such as bio_split(), bio_chain() and generic_make request() and generally is less complex and easier to maintain. Below some more details of the new approach. When read bio arrives, it is cloned for pblk internal purposes. All the L2P mapping, which includes copying data from round buffer to bio and thus bio_advance() calls is done on the cloned bio, so the original bio is untouched. If we found that we have partial read case, we still have original bio untouched, so we can split it and continue to process only first part of it in current context, when the rest will be called as separate bio request which is passed to generic_make_request() for further processing. Signed-off-by: Igor Konopko <igor.j.konopko@intel.com> Reviewed-by: Heiner Litz <hlitz@ucsc.edu> Reviewed-by: Javier González <javier@javigon.com> Signed-off-by: Matias Bjørling <mb@lightnvm.io> Signed-off-by: Jens Axboe <axboe@kernel.dk>		2019-05-06 10:19:19 -06:00
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accessibility	…
acpi	libnvdimm fixes v5.1-rc6	2019-04-15 16:48:51 -07:00
amba	ARM: 8836/1: drivers: amba: Update component matching to use the CoreSight UCI values.	2019-02-26 11:23:49 +00:00
android	binder: fix race between munmap() and direct reclaim	2019-03-21 06:51:32 +01:00
ata	libata: fix using DMA buffers on stack	2019-03-28 08:16:04 -06:00
atm	…
auxdisplay	auxdisplay: charlcd: make backlight initial state configurable	2019-03-17 08:48:45 +01:00
base	mm/memory_hotplug: do not unlock after failing to take the device_hotplug_lock	2019-04-19 09:46:04 -07:00
bcma	…
block	mtip32xx: remove trim support	2019-04-25 09:11:53 -06:00
bluetooth	Bluetooth: btusb: request wake pin with NOAUTOEN	2019-04-09 17:38:24 -10:00
bus	ARM: SoC driver updates for 5.1	2019-03-06 09:41:12 -08:00
cdrom	Revert "block: unexport DISK_EVENT_MEDIA_CHANGE for legacy/fringe drivers"	2019-04-12 13:35:27 -06:00
char	ipmi: fix sleep-in-atomic in free_user at cleanup SRCU user->release_barrier	2019-04-17 10:29:27 -05:00
clk	clk: imx: Fix PLL_1416X not rounding rates	2019-04-12 14:21:43 -07:00
clocksource	clocksource/drivers/timer-ti-dm: Remove omap_dm_timer_set_load_start	2019-04-16 14:26:54 +02:00
connector	connector: fix unsafe usage of ->real_parent	2019-03-08 15:06:38 -08:00
cpufreq	cpufreq/intel_pstate: Load only on Intel hardware	2019-04-01 23:39:23 +02:00
cpuidle	cpuidle: governor: Add new governors to cpuidle_governors again	2019-03-12 23:46:55 +01:00
crypto	crypto: caam - fix copy of next buffer for xcbc and cmac	2019-03-28 13:54:32 +08:00
dax	device-dax for 5.1	2019-03-16 13:05:32 -07:00
dca	…
devfreq	…
dio	…
dma	dmaengine: stm32-mdma: Revert "dmaengine: stm32-mdma: Add a check on read_u32_array"	2019-03-25 21:56:54 +05:30
dma-buf	…
edac	Merge branch 'ras-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip	2019-03-08 09:11:39 -08:00
eisa	…
extcon	extcon: ptn5150: fix COMPILE_TEST dependencies	2019-04-05 10:08:37 +09:00
firewire	…
firmware	memblock: drop memblock_alloc_*_nopanic() variants	2019-03-12 10:04:02 -07:00
fmc	…
fpga	…
fsi	…
gnss	gnss: add driver for mediatek receivers	2019-02-15 16:54:38 +01:00
gpio	gpio fixes for v5.1-rc3	2019-03-29 03:04:47 +01:00
gpu	Merge branch 'drm-fixes-5.1' of git://people.freedesktop.org/~agd5f/linux into drm-fixes	2019-04-18 06:56:35 +10:00
hid	Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input	2019-04-19 10:28:27 -07:00
hsi	…
hv	Char/Misc driver patches for 5.1-rc1	2019-03-06 14:18:59 -08:00
hwmon	hwmon: (ntc_thermistor) Fix temperature type reporting	2019-03-29 09:51:44 -07:00
hwspinlock	…
hwtracing	ARM updates for 5.1-rc1	2019-03-15 14:37:46 -07:00
i2c	i2c: imx: don't leak the i2c adapter on error	2019-04-06 17:54:28 +02:00
i3c	i3c: dw: Fix dw_i3c_master_disable controller by using correct mask	2019-04-10 12:46:20 +02:00
ide	Revert "ide: unexport DISK_EVENT_MEDIA_CHANGE for ide-gd and ide-cd"	2019-04-12 13:35:25 -06:00
idle	intel_idle: add support for Jacobsville	2019-02-15 10:49:14 +01:00
iio	iio: core: fix a possible circular locking dependency	2019-03-31 11:11:31 +01:00
infiniband	coredump: fix race condition between mmget_not_zero()/get_task_mm() and core dumping	2019-04-19 09:46:05 -07:00
input	Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input	2019-04-19 10:28:27 -07:00
interconnect	…
iommu	iommu/amd: Set exclusion range correctly	2019-04-12 12:59:45 +02:00
ipack	…
irqchip	irqchip/irq-ls1x: Missing error code in ls1x_intc_of_init()	2019-04-05 14:37:56 +02:00
isdn	mISDN: Check address length before reading address family	2019-04-12 10:25:03 -07:00
leds	leds: trigger: netdev: use memcpy in device_name_store	2019-03-30 19:09:32 +01:00
lightnvm	lightnvm: pblk: simplify partial read path	2019-05-06 10:19:19 -06:00
macintosh	treewide: add checks for the return value of memblock_alloc*()	2019-03-12 10:04:02 -07:00
mailbox	mailbox: imx: keep MU irq working during suspend/resume	2019-03-11 02:51:43 -05:00
mcb	…
md	bcache: make is_discard_enabled() static	2019-05-01 06:34:09 -06:00
media	DMA mapping updates for 5.1	2019-03-10 11:54:48 -07:00
memory	…
memstick	…
message	…
mfd	mfd: sun6i-prcm: Allow to compile with COMPILE_TEST	2019-04-03 08:38:07 +01:00
misc	misc: fastrpc: add checked value for dma_set_mask	2019-04-02 17:56:54 +02:00
mmc	mmc: sdhci-omap: Don't finish_mrq() on a command error during tuning	2019-04-11 12:40:32 +02:00
mtd	mtd: cfi: fix deadloop in cfi_cmdset_0002.c do_write_buffer	2019-04-05 00:39:19 +02:00
mux	…
net	ocelot: Clean up stats update deferred work	2019-04-16 21:43:53 -07:00
nfc	…
ntb	Fixes for switchtec debugability and mapping table entries, NTB	2019-03-15 14:32:59 -07:00
nubus	…
nvdimm	Linux 5.1-rc6	2019-04-22 09:47:36 -06:00
nvme	lightnvm: Inherit mdts from the parent nvme device	2019-05-06 10:19:17 -06:00
nvmem	Char/Misc driver patches for 5.1-rc1	2019-03-06 14:18:59 -08:00
of	of: fix kmemleak crash caused by imbalance in early memory reservation	2019-03-12 10:04:02 -07:00
opp	PM / OPP: Update performance state when freq == old_freq	2019-03-12 09:45:56 +01:00
oprofile	…
parisc	Revert: parisc: Use F_EXTEND() macro in iosapic code	2019-04-06 19:07:55 +02:00
parport	Revert "parport: daisy: use new parport device model"	2019-03-25 14:49:00 -07:00
pci	PCI: pciehp: Ignore Link State Changes after powering off a slot	2019-04-10 16:06:43 -05:00
pcmcia	…
perf	arm64 updates for 5.1:	2019-03-10 10:17:23 -07:00
phy	phy: sun4i-usb: Support set_mode to USB_HOST for non-OTG PHYs	2019-03-26 16:48:55 +09:00
pinctrl	This is the bulk of pin control changes for the v5.1 kernel cycle.	2019-03-11 11:12:50 -07:00
platform	Here's more than a handful of clk driver fixes for changes that came in	2019-04-13 14:33:56 -07:00
pnp	ACPI/ACPICA: Trivial: fix spelling mistakes and fix whitespace formatting	2019-02-24 21:12:01 +01:00
power	drivers: power: supply: goldfish_battery: Fix bogus SPDX identifier	2019-04-15 11:16:31 +02:00
powercap	powercap/intel_rapl: add Ice Lake mobile	2019-02-18 11:31:39 +01:00
pps	…
ps3	…
ptp	Merge branch 'timers-2038-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip	2019-03-05 14:08:26 -08:00
pwm	pwm: atmel: Remove useless symbolic definitions	2019-03-04 12:52:49 +01:00
rapidio	rapidio/mport_cdev: mark expected switch fall-through	2019-03-07 18:32:02 -08:00
ras	…
regulator	regulator: mc13xxx: Constify regulator_ops variables	2019-03-04 00:01:08 +00:00
remoteproc	remoteproc updates for v5.1	2019-03-14 09:00:06 -07:00
reset	reset: meson-audio-arb: Fix missing .owner setting of reset_controller_dev	2019-03-25 16:22:10 +01:00
rpmsg	rpmsg: virtio: change header file sort style	2019-02-20 21:15:54 -08:00
rtc	rtc: da9063: set uie_unsupported when relevant	2019-04-02 23:33:09 +02:00
s390	s390 update with bug fixes for 5.1-rc6	2019-04-18 08:15:06 -07:00
sbus	…
scsi	Linux 5.1-rc6	2019-04-22 09:47:36 -06:00
sfi	…
sh	…
siox	…
slimbus	…
sn	…
soc	This pull request brings in a build fix for arm64 with bcm2835	2019-03-18 10:31:24 -07:00
soundwire	…
spi	pci-v5.1-changes	2019-03-09 14:57:08 -08:00
spmi	…
ssb	…
staging	block: remove the i argument to bio_for_each_segment_all	2019-04-30 09:26:13 -06:00
target	SCSI misc on 20190315	2019-03-16 12:51:50 -07:00
tc	…
tee	ARM: SoC driver updates for 5.1	2019-03-06 09:41:12 -08:00
thermal	Merge branches 'fixes' and 'thermal-intel' into next	2019-03-18 22:37:44 +08:00
thunderbolt	…
tty	sc16is7xx: put err_spi and err_i2c into correct #ifdef	2019-04-19 14:09:23 +02:00
uio	…
usb	USB-serial fixes for 5.1-rc3	2019-03-29 15:31:16 +01:00
uwb	…
vfio	vfio/type1: Limit DMA mappings per container	2019-04-03 12:43:05 -06:00
vhost	vhost: reject zero size iova range	2019-04-10 22:45:38 -07:00
video	fbdev changes for v5.1:	2019-03-15 14:22:59 -07:00
virt	virt: vbox: Implement passing requestor info to the host for VirtualBox 6.0.x	2019-03-28 01:55:18 +09:00
virtio	virtio: Honour 'may_reduce_num' in vring_create_virtqueue	2019-04-08 17:05:52 -04:00
visorbus	…
vlynq	…
vme	…
w1	…
watchdog	linux-watchdog 5.1-rc1 tag	2019-03-11 11:22:15 -07:00
xen	Linux 5.1-rc6	2019-04-22 09:47:36 -06:00
zorro	…
Kconfig	…
Makefile	IOMMU Updates for Linux v5.1	2019-03-10 12:29:52 -07:00