On 05/24/2017 02:34 AM, Bart Van Assche wrote:

Several block drivers need to initialize the driver-private data
after having called blk_get_request() and before .prep_rq_fn() is
called, e.g. when submitting a REQ_OP_SCSI_* request. Avoid that
that initialization code has to be repeated after every
blk_get_request() call by adding a new callback function to struct
request_queue.

Signed-off-by: Bart Van Assche <redacted>
Cc: Jens Axboe <axboe@fb.com>
Cc: Christoph Hellwig <hch@lst.de>
Cc: Omar Sandoval <redacted>
Cc: Hannes Reinecke <hare@suse.com>
Cc: linux-block@vger.kernel.org
---
 block/blk-core.c       | 3 +++
 block/blk-mq.c         | 3 +++
 include/linux/blkdev.h | 4 ++++
 3 files changed, 10 insertions(+)

Reviewed-by: Hannes Reinecke <hare@suse.com>

Cheers,

Hannes
-- 
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