git.stricted.de - GitHub/moto-9609/android_kernel_motorola

author	Chaitanya Kulkarni <chaitanya.kulkarni@hgst.com>
	Wed, 30 Nov 2016 20:29:01 +0000 (12:29 -0800)
committer	Jens Axboe <axboe@fb.com>
	Thu, 1 Dec 2016 14:58:40 +0000 (07:58 -0700)
commit	6d31e3ba232ea22458b2f36b6d3f2f9f11bf3fa4
tree	21b8454092fd386cfcf4a64e3af33895989d0a8d	tree \| snapshot (tar.gz zip)
parent	3b7c33b28a44d4621e365e090bf8bd332ab232a1	commit \| diff

nvme: add support for the Write Zeroes command

Allow write zeroes operations (REQ_OP_WRITE_ZEROES) on the block
device, if the device supports optional command bit set for write
zeroes. Add support to setup write zeroes command. Set maximum possible
write zeroes sectors in one write zeroes command according to
nvme write zeroes command definition.

Signed-off-by: Chaitanya Kulkarni <chaitanya.kulkarni@hgst.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Jens Axboe <axboe@fb.com>