nvme: add support for the Write Zeroes command

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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>

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Chaitanya Kulkarni 2016-11-30 12:29:01 -08:00 • committed by Jens Axboe

parent 3b7c33b28a

commit 6d31e3ba23

1 changed files with 21 additions and 0 deletions

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drivers/nvme/host/core.c

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