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block: split scsi_request out of struct request

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And require all drivers that want to support BLOCK_PC to allocate it
as the first thing of their private data.  To support this the legacy
IDE and BSG code is switched to set cmd_size on their queues to let
the block layer allocate the additional space.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Jens Axboe <axboe@fb.com>
This commit is contained in:
Christoph Hellwig
2017-01-27 09:46:29 +01:00
committed by Jens Axboe
parent 8ae94eb65b
commit 82ed4db499
49 changed files with 457 additions and 409 deletions
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drivers/scsi/qla2xxx/qla_bsg.c
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@@ -921,7 +921,7 @@ qla2x00_process_loopback(struct bsg_job *bsg_job)
bsg_job->reply_len = sizeof(struct fc_bsg_reply) +
sizeof(response) + sizeof(uint8_t);
fw_sts_ptr = ((uint8_t *)bsg_job->req->sense) +
fw_sts_ptr = ((uint8_t *)scsi_req(bsg_job->req)->sense) +
sizeof(struct fc_bsg_reply);
memcpy(fw_sts_ptr, response, sizeof(response));
fw_sts_ptr += sizeof(response);