block: ensure bios return from blk_get_request are properly initialized
authorChristoph Hellwig <hch@lst.de>
Tue, 19 Jul 2016 09:31:50 +0000 (11:31 +0200)
committerJens Axboe <axboe@fb.com>
Wed, 20 Jul 2016 23:38:30 +0000 (17:38 -0600)
commit0c4de0f33b0a86a426c0c3958cd40d8c82ede8d2
treed3666484b5a0f67400eacef1225826799390aa73
parentf9596695bee6a88d17118ee9f2f826f96b826644
block: ensure bios return from blk_get_request are properly initialized

blk_get_request is used for BLOCK_PC and similar passthrough requests.
Currently we always need to call blk_rq_set_block_pc or an open coded
version of it to allow appending bios using the request mapping helpers
later on, which is a somewhat awkward API.  Instead move the
initialization part of blk_rq_set_block_pc into blk_get_request, so that
we always have a safe to use request.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Jens Axboe <axboe@fb.com>
block/blk-core.c
block/blk-mq.c
drivers/block/virtio_blk.c
drivers/nvme/host/core.c