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Ming Lei da5567369f scsi: staging: unisys: visorhba: use sg helper to iterate over scatterlist 
Unlike the legacy I/O path, scsi-mq preallocates a large array to hold
the scatterlist for each request. This static allocation can consume
substantial amounts of memory on modern controllers which support a
large number of concurrently outstanding requests.

To facilitate a switch to a smaller static allocation combined with a
dynamic allocation for requests that need it, we need to make sure all
SCSI drivers handle chained scatterlists correctly.

Convert remaining drivers that directly dereference the scatterlist
array to using the iterator functions.

[mkp: clarified commit message]

Cc: devel@driverdev.osuosl.org
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Bart Van Assche <bvanassche@acm.org>
Signed-off-by: Ming Lei <ming.lei@redhat.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
 		2019-06-20 15:21:32 -04:00
..
android staging: remove redundant 'default n' from Kconfig 2019-04-16 13:39:01 +02:00
axis-fifo staging: remove redundant 'default n' from Kconfig 2019-04-16 13:39:01 +02:00
board staging: add missing SPDX lines to Makefile files 2019-04-03 11:10:15 +02:00
clocking-wizard staging: add missing SPDX lines to Makefile files 2019-04-03 11:10:15 +02:00
comedi Staging / IIO driver patches for 5.2-rc1 2019-05-07 13:31:29 -07:00
emxx_udc staging: add missing SPDX lines to Makefile files 2019-04-03 11:10:15 +02:00
erofs for-5.2/block-20190507 2019-05-07 18:14:36 -07:00
fbtft staging: add missing SPDX lines to Kconfig files 2019-04-03 11:10:15 +02:00
fieldbus staging: fieldbus: anybus-s: fix wait_for_completion_timeout return handling 2019-05-01 16:45:03 +02:00
fsl-dpaa2 staging: add missing SPDX lines to Makefile files 2019-04-03 11:10:15 +02:00
fwserial staging: add missing SPDX lines to Makefile files 2019-04-03 11:10:15 +02:00
gasket mm/gup: change GUP fast to use flags rather than a write 'bool' 2019-05-14 09:47:46 -07:00
gdm724x staging: add missing SPDX lines to Kconfig files 2019-04-03 11:10:15 +02:00
goldfish staging: add missing SPDX lines to Makefile files 2019-04-03 11:10:15 +02:00
greybus staging: greybus: power_supply: use struct_size() helper 2019-04-19 15:03:07 +02:00
gs_fpgaboot staging: remove redundant 'default n' from Kconfig 2019-04-16 13:39:01 +02:00
iio Second set of IIO new device support, features and cleanup for the 5.2 cycle. 2019-04-25 10:50:51 +02:00
kpc2000 Staging / IIO driver patches for 5.2-rc1 2019-05-07 13:31:29 -07:00
ks7010 Staging / IIO driver patches for 5.2-rc1 2019-05-07 13:31:29 -07:00
media media updates for v5.2-rc1 2019-05-16 11:57:16 -07:00
most staging: most: cdev: fix chrdev_region leak in mod_exit 2019-05-02 19:43:17 +02:00
mt7621-dma staging: add missing SPDX lines to Makefile files 2019-04-03 11:10:15 +02:00
mt7621-dts staging: add missing SPDX lines to Makefile files 2019-04-03 11:10:15 +02:00
mt7621-pci staging: add missing SPDX lines to Makefile files 2019-04-03 11:10:15 +02:00
mt7621-pci-phy staging: mt7621-pci-phy: convert driver to use kernel regmap API's 2019-04-19 15:01:34 +02:00
mt7621-pinctrl staging: add missing SPDX lines to Makefile files 2019-04-03 11:10:15 +02:00
netlogic staging: add missing SPDX lines to Makefile files 2019-04-03 11:10:15 +02:00
nvec staging: add missing SPDX lines to Kconfig files 2019-04-03 11:10:15 +02:00
octeon Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next 2019-05-07 22:03:58 -07:00
octeon-usb staging: add missing SPDX lines to Kconfig files 2019-04-03 11:10:15 +02:00
olpc_dcon - Fix-ups 2019-05-14 10:45:03 -07:00
pi433 Staging / IIO driver patches for 5.2-rc1 2019-05-07 13:31:29 -07:00
ralink-gdma staging: ralink-gdma: Use struct_size() in kzalloc() 2019-04-16 13:44:30 +02:00
rtl8188eu Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next 2019-05-07 22:03:58 -07:00
rtl8192e Staging / IIO driver patches for 5.2-rc1 2019-05-07 13:31:29 -07:00
rtl8192u Staging / IIO driver patches for 5.2-rc1 2019-05-07 13:31:29 -07:00
rtl8712 staging: rtl8712: remove unnecessary NULL check 2019-04-16 13:31:58 +02:00
rtl8723bs Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next 2019-05-07 22:03:58 -07:00
rts5208 staging: add missing SPDX lines to Makefile files 2019-04-03 11:10:15 +02:00
sm750fb Staging: sm750fb: Change *array into *const array 2019-04-30 15:03:42 +02:00
speakup staging: speakup: refactor to use existing code in vt 2019-04-19 15:09:10 +02:00
unisys scsi: staging: unisys: visorhba: use sg helper to iterate over scatterlist 2019-06-20 15:21:32 -04:00
vc04_services staging: vc04_services: bcm2835-camera: Compress two lines into one line 2019-05-01 18:18:03 +02:00
vme staging: add missing SPDX lines to Makefile files 2019-04-03 11:10:15 +02:00
vt6655 staging: vt6655: upc: remove double blank lines 2019-04-16 13:44:30 +02:00
vt6656 staging: add missing SPDX lines to Kconfig files 2019-04-03 11:10:15 +02:00
wilc1000 staging: wilc1000: Avoid GFP_KERNEL allocation from atomic context 2019-04-17 12:40:51 +02:00
wlan-ng staging: wlan-ng: Fix improper SPDX comment style 2019-05-02 19:43:16 +02:00
Kconfig drm pull request for 5.2 2019-05-08 21:35:19 -07:00
Makefile drm pull request for 5.2 2019-05-08 21:35:19 -07:00