mirrors
/
linux-stable
mirror of https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
1
0
Fork 0
Code Issues Releases Wiki Activity
linux-stable/drivers
History
John Hubbard 08e9cbe75f scsi: st: Convert convert get_user_pages() --> pin_user_pages() 
This code was using get_user_pages*(), in a "Case 1" scenario (Direct IO),
using the categorization from [1]. That means that it's time to convert the
get_user_pages*() + put_page() calls to pin_user_pages*() +
unpin_user_pages() calls.

There is some helpful background in [2]: basically, this is a small part of
fixing a long-standing disconnect between pinning pages, and file systems'
use of those pages.

Note that this effectively changes the code's behavior as well: it now
ultimately calls set_page_dirty_lock(), instead of SetPageDirty().This is
probably more accurate.

As Christoph Hellwig put it, "set_page_dirty() is only safe if we are
dealing with a file backed page where we have reference on the inode it
hangs off." [3]

Also, this deletes one of the two FIXME comments (about refcounting),
because there is nothing wrong with the refcounting at this point.

[1] Documentation/core-api/pin_user_pages.rst

[2] "Explicit pinning of user-space pages":
    https://lwn.net/Articles/807108/

[3] https://lore.kernel.org/r/20190723153640.GB720@lst.de

Link: https://lore.kernel.org/r/20200526182709.99599-1-jhubbard@nvidia.com
Cc: "Kai Mäkisara (Kolumbus)" <kai.makisara@kolumbus.fi>
Cc: Bart Van Assche <bvanassche@acm.org>
Cc: James E.J. Bottomley <jejb@linux.ibm.com>
Cc: Martin K. Petersen <martin.petersen@oracle.com>
Cc: linux-scsi@vger.kernel.org
Acked-by: Kai Mäkisara <kai.makisara@kolumbus.fi>
Signed-off-by: John Hubbard <jhubbard@nvidia.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
 		2020-06-09 21:57:26 -04:00
..
accessibility
…
acpi More ACPI updates for 5.7-rc1 2020-04-10 09:52:15 -07:00
amba Revert "amba: Initialize dma_parms for amba devices" 2020-04-01 08:03:28 +02:00
android
…
ata ahci: Add Intel Comet Lake PCH RAID PCI ID 2020-04-09 09:31:38 -06:00
atm .gitignore: add SPDX License Identifier 2020-03-25 11:50:48 +01:00
auxdisplay
…
base mm/memory_hotplug: allow to specify a default online_type 2020-04-07 10:43:41 -07:00
bcma
…
block xen: branch for v5.7-rc1b 2020-04-10 17:20:06 -07:00
bluetooth
…
bus ARM: driver updates 2020-04-03 15:05:35 -07:00
cdrom
…
char Merge branch 'akpm' (patches from Andrew) 2020-04-10 17:57:48 -07:00
clk There's not much to see in the core framework this time around. Instead the 2020-04-05 10:43:32 -07:00
clocksource clocksource/drivers/timer-vf-pit: Add missing parenthesis 2020-04-05 09:24:58 +02:00
connector
…
counter
…
cpufreq Additional power management updates for 5.7-rc1 2020-04-06 10:14:39 -07:00
cpuidle Merge branch 'pm-cpuidle' 2020-04-10 11:32:22 +02:00
crypto Merge branch 'linus' of git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6 2020-04-08 21:35:29 -07:00
dax dax: Move mandatory ->zero_page_range() check in alloc_dax() 2020-04-02 19:15:03 -07:00
dca
…
devfreq PM / devfreq: Fix handling dev_pm_qos_remove_request result 2020-03-25 08:35:03 +09:00
dio
…
dma drivers/dma/tegra20-apb-dma.c: fix platform_get_irq.cocci warnings 2020-04-10 15:36:22 -07:00
dma-buf A bunch of fixes to avoid null pointer dereference in fbcon, fix a return 2020-04-08 09:14:34 +10:00
edac Merge branch 'perf-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip 2020-03-30 16:40:08 -07:00
eisa .gitignore: add SPDX License Identifier 2020-03-25 11:50:48 +01:00
extcon Char/Misc driver patches for 5.7-rc1 2020-04-03 13:22:40 -07:00
firewire
…
firmware sound fixes for 5.7-rc1 2020-04-10 12:27:06 -07:00
fpga
…
fsi
…
gnss
…
gpio This is the bulk of GPIO development for the v5.7 kernel cycle. 2020-04-04 10:27:00 -07:00
gpu Kbuild updates for v5.7 (2nd) 2020-04-11 09:46:12 -07:00
greybus
…
hid Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/hid/hid 2020-04-01 15:18:42 -07:00
hsi
…
hv hv_balloon: don't check for memhp_auto_online manually 2020-04-07 10:43:40 -07:00
hwmon change email address for Pali Rohár 2020-04-10 15:36:22 -07:00
hwspinlock hwspinlock: hwspinlock_internal.h: Replace zero-length array with flexible-array member 2020-03-25 22:30:46 -07:00
hwtracing
…
i2c Merge branch 'i2c/for-5.7' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux 2020-04-02 15:54:13 -07:00
i3c i3c: convert to use i2c_new_client_device() 2020-03-29 10:35:50 +02:00
ide drivers/ide: Fix build regression. 2020-04-04 18:07:59 -07:00
idle Merge branch 'perf-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip 2020-03-30 16:40:08 -07:00
iio chrome platform changes for 5.7 2020-04-08 21:25:49 -07:00
infiniband RDMA 5.7 pull request 2020-04-01 18:18:18 -07:00
input Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input 2020-04-07 20:20:12 -07:00
interconnect
…
iommu Merge branches 'iommu/fixes', 'arm/qcom', 'arm/omap', 'arm/smmu', 'x86/amd', 'x86/vt-d', 'virtio' and 'core' into next 2020-03-27 11:33:27 +01:00
ipack
…
irqchip Two reverts addressing regressions of the Xilinx interrupt controller 2020-04-05 11:57:12 -07:00
isdn
…
leds leds: core: Fix warning message when init_data 2020-04-06 23:12:08 +02:00
lightnvm for-5.7/drivers-2020-03-29 2020-03-30 11:43:51 -07:00
macintosh Char/Misc driver patches for 5.7-rc1 2020-04-03 13:22:40 -07:00
mailbox
…
mcb
…
md libnvdimm for 5.7 2020-04-08 21:03:40 -07:00
media Power management updates for 5.7-rc1 2020-03-30 15:05:01 -07:00
memory ARM: driver updates 2020-04-03 15:05:35 -07:00
memstick
…
message scsi: docs: fusion: get rid of a doc build warning 2020-04-13 14:20:00 -04:00
mfd mfd: intel-lpss: Fix Intel Elkhart Lake LPSS I2C input clock 2020-03-30 07:35:28 +01:00
misc virtio: fixes, vdpa 2020-04-08 10:51:53 -07:00
mmc MMC core: 2020-03-31 16:13:09 -07:00
most
…
mtd This pull request contains fixes for UBI and UBIFS: 2020-04-07 12:40:56 -07:00
mux
…
net scsi: qed: Send BW update notifications to the protocol drivers 2020-04-17 17:55:26 -04:00
nfc Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net 2020-03-25 18:58:11 -07:00
ntb pci-v5.7-changes 2020-04-03 14:25:02 -07:00
nubus
…
nvdimm libnvdimm for 5.7 2020-04-08 21:03:40 -07:00
nvme block-5.7-2020-04-10 2020-04-10 10:06:54 -07:00
nvmem nvmem: core: remove nvmem_sysfs_get_groups() 2020-03-25 19:23:49 +01:00
of Devicetree updates for v5.7: 2020-04-02 17:32:52 -07:00
opp
…
oprofile
…
parisc parisc: Replace setup_irq() by request_irq() 2020-04-05 22:05:23 +02:00
parport
…
pci IOMMU Updates for Linux v5.7 2020-04-08 11:00:00 -07:00
pcmcia pcmcia: remove some unused space characters 2020-03-31 18:48:22 +02:00
perf arm64 updates for 5.7: 2020-03-31 10:05:01 -07:00
phy pci-v5.7-changes 2020-04-03 14:25:02 -07:00
pinctrl This is the bulk of GPIO development for the v5.7 kernel cycle. 2020-04-04 10:27:00 -07:00
platform change email address for Pali Rohár 2020-04-10 15:36:22 -07:00
pnp
…
power change email address for Pali Rohár 2020-04-10 15:36:22 -07:00
powercap Merge branch 'perf-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip 2020-03-30 16:40:08 -07:00
pps
…
ps3 powerpc/ps3: Remove an unneeded NULL check 2020-04-03 00:09:59 +11:00
ptp ptp: Avoid deadlocks in the programmable pin code. 2020-03-30 11:16:38 -07:00
pwm pwm: pca9685: Fix PWM/GPIO inter-operation 2020-04-03 21:41:42 +02:00
rapidio
…
ras
…
regulator spi/regulator: Updates for v5.7 2020-03-30 14:58:26 -07:00
remoteproc remoteproc/omap: Fix set_load call in omap_rproc_request_timer 2020-04-03 10:47:21 -07:00
reset
…
rpmsg
…
rtc - New Drivers 2020-04-07 19:48:52 -07:00
s390 scsi: zfcp: Move allocation of the shost object to after xconf- and xport-data 2020-05-11 23:19:52 -04:00
sbus
…
scsi scsi: st: Convert convert get_user_pages() --> pin_user_pages() 2020-06-09 21:57:26 -04:00
sfi
…
sh
…
siox
…
slimbus
…
soc RISC-V Patches for the 5.7 Merge Window, Part 1 2020-04-09 10:51:30 -07:00
soundwire Char/Misc driver patches for 5.7-rc1 2020-04-03 13:22:40 -07:00
spi sound updates for 5.7-rc1 2020-04-02 15:50:04 -07:00
spmi
…
ssb
…
staging mm/vma: introduce VM_ACCESS_FLAGS 2020-04-10 15:36:21 -07:00
target scsi: target: Rename target_setup_cmd_from_cdb() to target_cmd_parse_cdb() 2020-06-09 21:57:26 -04:00
tc
…
tee ARM: driver updates 2020-04-03 15:05:35 -07:00
thermal - Convert tsens configuration DT binding to yaml (Rajeshwari) 2020-04-07 20:00:16 -07:00
thunderbolt
…
tty powerpc updates for 5.7 2020-04-05 11:12:59 -07:00
uio
…
usb scsi: target: Initialize LUN in transport_init_se_cmd() 2020-06-09 21:57:26 -04:00
vdpa vdpa: move to drivers/vdpa 2020-04-02 10:41:40 -04:00
vfio vfio: Ignore -ENODEV when getting MSI cookie 2020-04-01 13:51:51 -06:00
vhost scsi: vhost: Notify TCM about the maximum sg entries supported per command 2020-05-26 15:52:08 -04:00
video drm fixes for 5.7-rc1 2020-04-07 20:24:34 -07:00
virt
…
virtio virtio: fixes, vdpa 2020-04-08 10:51:53 -07:00
visorbus
…
vlynq
…
vme
…
w1
…
watchdog watchdog: Add K3 RTI watchdog support 2020-04-01 11:35:23 +02:00
xen xen: branch for v5.7-rc1b 2020-04-10 17:20:06 -07:00
zorro SPDX patches for 5.7-rc1. 2020-04-03 13:12:26 -07:00
Kconfig virtio: fixes, vdpa 2020-04-08 10:51:53 -07:00
Makefile virtio: fixes, vdpa 2020-04-08 10:51:53 -07:00