[PATCH v2 2/5] block: add support for REQ_OP_WRITE_ZEROES

[Martin K. Petersen]

>>>>> "Chaitanya" == Chaitanya Kulkarni <ckulkarnilinux at gmail.com> writes:

Chaitanya> This adds a new block layer operation to zero out a range of
Chaitanya> LBAs. This allows to implement zeroing for devices that don't
Chaitanya> use either discard with a predictable zero pattern or WRITE
Chaitanya> SAME of zeroes.  The prominent example of that is NVMe with
Chaitanya> the Write Zeroes command, but in the future this should also
Chaitanya> help with improving the way zeroing discards work.

Looks good. Please also export the queue limit in blk-sysfs.c and create
a suitable entry in Documentation/ABI/testing/sysfs-block.

-- 
Martin K. Petersen	Oracle Linux Engineering