linux/drivers
Chaitanya Kulkarni dab3902b19 nvmet: use inline bio for passthru fast path
In nvmet_passthru_execute_cmd() which is a high frequency function
it uses bio_alloc() which leads to memory allocation from the fs pool
for each I/O.

For NVMeoF nvmet_req we already have inline_bvec allocated as a part of
request allocation that can be used with preallocated bio when we
already know the size of request before bio allocation with bio_alloc(),
which we already do.

Introduce a bio member for the nvmet_req passthru anon union. In the
fast path, check if we can get away with inline bvec and bio from
nvmet_req with bio_init() call before actually allocating from the
bio_alloc().

This will be useful to avoid any new memory allocation under high
memory pressure situation and get rid of any extra work of
allocation (bio_alloc()) vs initialization (bio_init()) when
transfer len is < NVMET_MAX_INLINE_DATA_LEN that user can configure at
compile time.

Signed-off-by: Chaitanya Kulkarni <chaitanya.kulkarni@wdc.com>
Reviewed-by: Logan Gunthorpe <logang@deltatee.com>
Signed-off-by: Christoph Hellwig <hch@lst.de>
2020-12-01 20:36:36 +01:00
..
accessibility speakup ttyio: Do not schedule() in ttyio_in_nowait 2020-11-09 18:14:29 +01:00
acpi Merge branches 'acpi-scan', 'acpi-misc', 'acpi-button' and 'acpi-dptf' 2020-11-12 16:11:48 +01:00
amba
android task_work: cleanup notification modes 2020-10-17 15:05:30 -06:00
ata libata-5.10-2020-10-30 2020-10-30 14:51:01 -07:00
atm
auxdisplay
base PM: runtime: Resume the device earlier in __device_release_driver() 2020-11-02 18:14:07 +01:00
bcma bcma: use semicolons rather than commas to separate statements 2020-10-01 16:23:50 +03:00
block z2ram: use separate gendisk for the different modes 2020-11-16 08:14:31 -07:00
bluetooth Bluetooth: btintel: Replace zero-length array with flexible-array member 2020-10-30 16:57:41 -05:00
bus ARM: SoC-related driver updates 2020-10-24 10:39:22 -07:00
cdrom
char Char/Misc driver fixes for 5.10-rc4 2020-11-15 10:15:17 -08:00
clk clk: imx8m: fix bus critical clk registration 2020-11-04 17:13:12 -08:00
clocksource treewide: Convert macro and uses of __section(foo) to __section("foo") 2020-10-25 14:51:49 -07:00
connector
counter
cpufreq cpufreq: intel_pstate: Take CPUFREQ_GOV_STRICT_TARGET into account 2020-11-10 18:36:17 +01:00
cpuidle powerpc updates for 5.10 2020-10-16 12:21:15 -07:00
crypto crypto: sun8x-ce*: update entries to its documentation 2020-10-28 11:41:15 -06:00
dax fuse update for 5.10 2020-10-19 14:28:30 -07:00
dca
devfreq
dio
dma misc: mic: remove the MIC drivers 2020-10-28 19:12:03 +01:00
dma-buf dma-mapping updates for 5.10 2020-10-15 14:43:29 -07:00
edac EFI changes for v5.10: 2020-10-12 13:26:49 -07:00
eisa
extcon
firewire
firmware firmware: xilinx: fix out-of-bounds access 2020-11-09 18:35:35 +01:00
fpga
fsi
gnss
gpio gpio: sifive: Fix SiFive gpio probe 2020-11-11 09:53:09 +01:00
gpu Merge branch 'linux-5.10' of git://github.com/skeggsb/linux into drm-fixes 2020-11-16 06:36:31 +10:00
greybus
hid Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input 2020-10-23 16:16:31 -07:00
hsi
hv hyperv-fixes for 5.10-rc3 2020-11-05 11:32:03 -08:00
hwmon hwmon: (amd_energy) modify the visibility of the counters 2020-11-13 06:46:20 -08:00
hwspinlock
hwtracing coresight: cti: Initialize dynamic sysfs attributes 2020-10-29 20:10:25 +01:00
i2c i2c: designware: slave should do WRITE_REQUESTED before WRITE_RECEIVED 2020-11-06 16:02:00 +01:00
i3c * Fix DAA for the pre-reserved address case 2020-10-17 11:01:01 -07:00
ide ide: switch to __register_blkdev for command set probing 2020-11-16 08:14:30 -07:00
idle intel_idle: Fix max_cstate for processor models without C-state tables 2020-10-27 19:03:53 +01:00
iio chrome platform changes for 5.10 2020-10-23 10:54:13 -07:00
infiniband RDMA 5.10 second rc pull request 2020-11-05 11:25:02 -08:00
input Merge branch 'parisc-5.10-2' of git://git.kernel.org/pub/scm/linux/kernel/git/deller/parisc-linux 2020-10-25 10:59:34 -07:00
interconnect interconnect: qcom: use icc_sync state for sm8[12]50 2020-10-27 16:01:22 +02:00
iommu A small set of fixes for x86: 2020-11-15 09:49:56 -08:00
ipack
irqchip A set of fixes for interrupt chip drivers: 2020-11-08 09:52:57 -08:00
isdn
leds leds: pwm: Remove platform_data support 2020-10-07 12:02:58 +02:00
lightnvm lightnvm: fix out-of-bounds write to array devices->info[] 2020-10-16 09:28:45 -06:00
macintosh powerpc updates for 5.10 2020-10-16 12:21:15 -07:00
mailbox ARM: SoC-related driver updates 2020-10-24 10:39:22 -07:00
mcb
md md/cluster: fix deadlock when node is doing resync job 2020-11-30 10:12:35 -08:00
media dma-mapping updates for 5.10 2020-10-15 14:43:29 -07:00
memory ARM: SoC-related driver updates 2020-10-24 10:39:22 -07:00
memstick
message scsi: mptfusion: Fix null pointer dereferences in mptscsih_remove() 2020-10-26 16:57:18 -04:00
mfd - New Drivers 2020-10-14 15:56:58 -07:00
misc habanalabs/gaudi: mask WDT error in QMAN 2020-11-04 08:56:07 +02:00
mmc Revert "mmc: renesas_sdhi: workaround a regression when reinserting SD cards" 2020-11-10 13:58:01 +01:00
most
mtd mtd_blkdevs: don't override BLKFLSBUF 2020-11-16 08:14:29 -07:00
mux
net lan743x: fix use of uninitialized variable 2020-11-12 10:03:16 -08:00
nfc nfc: remove unneeded break 2020-10-20 10:36:41 -07:00
ntb Bug fixes for v5.10 2020-10-25 11:12:31 -07:00
nubus
nvdimm mm/memremap_pages: support multiple ranges per invocation 2020-10-13 18:38:28 -07:00
nvme nvmet: use inline bio for passthru fast path 2020-12-01 20:36:36 +01:00
nvmem
of of/address: Fix of_node memory leak in of_dma_is_coherent 2020-11-11 17:10:16 -06:00
opp opp: Reduce the size of critical section in _opp_table_kref_release() 2020-10-27 13:21:03 +05:30
oprofile
parisc dma-mapping: split <linux/dma-mapping.h> 2020-10-06 07:07:03 +02:00
parport
pci PCI: mvebu: Fix duplicate resource requests 2020-11-04 13:55:30 -06:00
pcmcia
perf perf: arm-cmn: Fix conversion specifiers for node type 2020-10-01 22:30:07 +01:00
phy pci-v5.10-changes 2020-10-22 12:41:00 -07:00
pinctrl intel-pinctrl for v5.10-2 2020-11-10 15:35:41 +01:00
platform Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input 2020-10-23 16:16:31 -07:00
pnp PNP: fix kernel-doc markups 2020-10-27 19:23:04 +01:00
power ARM: SoC platform updates 2020-10-24 10:33:08 -07:00
powercap Merge branch 'turbostat' of git://git.kernel.org/pub/scm/linux/kernel/git/lenb/linux 2020-11-10 10:02:31 -08:00
pps
ps3
ptp
pwm ARM: SoC platform updates 2020-10-24 10:33:08 -07:00
rapidio rapidio: fix the missed put_device() for rio_mport_add_riodev 2020-10-16 11:11:22 -07:00
ras
regulator regulator: defer probe when trying to get voltage from unresolved supply 2020-11-03 13:19:01 +00:00
remoteproc remoteproc updates for v5.10 2020-10-22 12:56:33 -07:00
reset ARM: SoC-related driver updates 2020-10-24 10:39:22 -07:00
rpmsg rpmsg updates for 5.10 2020-10-22 12:58:21 -07:00
rtc RTC for 5.10 2020-10-21 11:22:08 -07:00
s390 s390/dasd: Process FCES path event notification 2020-11-16 08:14:38 -07:00
sbus
scsi sd: use __register_blkdev to avoid a modprobe for an unregistered dev_t 2020-11-16 08:14:30 -07:00
sfi
sh
siox
slimbus
soc soc: ti: ti_sci_pm_domains: check for proper args count in xlate 2020-10-29 22:13:38 +01:00
soundwire soundwire updates for 5.10-rc1 2020-10-01 22:59:55 +02:00
spi spi: bcm2835: remove use of uninitialized gpio flags variable 2020-11-06 11:23:26 +00:00
spmi
ssb
staging This pull contains a series of warning fixes from Mauro; once applied, the 2020-11-03 13:14:14 -08:00
target scsi: target: tcmu: Replace zero-length array with flexible-array member 2020-10-29 17:22:59 -05:00
tc
tee Reenable kernel login method for kernel TEE client API 2020-10-26 10:55:56 +01:00
thermal treewide: Convert macro and uses of __section(foo) to __section("foo") 2020-10-25 14:51:49 -07:00
thunderbolt thunderbolt: Add support for Intel Tiger Lake-H 2020-11-06 16:39:11 +03:00
tty TTY/Serial fixes for 5.10-rc3 2020-11-08 11:28:08 -08:00
uio uio: Fix use-after-free in uio_unregister_device() 2020-11-09 18:54:30 +01:00
usb usb: cdc-acm: Add DISABLE_ECHO for Renesas USB Download mode 2020-11-13 15:26:49 +01:00
vdpa vhost,vdpa: fixes 2020-10-31 14:41:48 -07:00
vfio vfio/pci: Bypass IGD init in case of -ENODEV 2020-11-03 11:07:40 -07:00
vhost vdpa: handle irq bypass register failure case 2020-10-30 04:02:53 -04:00
video video: hyperv_fb: include vmalloc.h 2020-11-09 08:17:46 +01:00
virt nitro_enclaves: Fixup type and simplify logic of the poll mask setup 2020-11-09 18:20:36 +01:00
virtio vhost,vdpa,virtio: cleanups, fixes 2020-10-23 11:00:57 -07:00
visorbus
vlynq
vme
w1 w1: w1_therm: make w1_poll_completion static 2020-10-05 14:49:24 +02:00
watchdog ARM: SoC platform updates 2020-10-24 10:33:08 -07:00
xen swiotlb: remove the tbl_dma_addr argument to swiotlb_tbl_map_single 2020-11-02 10:10:39 -05:00
zorro
Kconfig
Makefile