summaryrefslogtreecommitdiffstats
path: root/block/blk-core.c
diff options
context:
space:
mode:
authorChristoph Hellwig <hch@lst.de>2017-01-27 09:46:29 +0100
committerJens Axboe <axboe@fb.com>2017-01-27 15:08:35 -0700
commit82ed4db499b8598f16f8871261bff088d6b0597f (patch)
treee1cc0a433bf5ae2b9723837291617bdfeeb61816 /block/blk-core.c
parent8ae94eb65be9425af4d57a4f4cfebfdf03081e93 (diff)
downloadlinux-82ed4db499b8598f16f8871261bff088d6b0597f.tar.bz2
block: split scsi_request out of struct request
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>
Diffstat (limited to 'block/blk-core.c')
-rw-r--r--block/blk-core.c31
1 files changed, 0 insertions, 31 deletions
diff --git a/block/blk-core.c b/block/blk-core.c
index 0a485ad802c9..f3bc083d4c14 100644
--- a/block/blk-core.c
+++ b/block/blk-core.c
@@ -132,8 +132,6 @@ void blk_rq_init(struct request_queue *q, struct request *rq)
rq->__sector = (sector_t) -1;
INIT_HLIST_NODE(&rq->hash);
RB_CLEAR_NODE(&rq->rb_node);
- rq->cmd = rq->__cmd;
- rq->cmd_len = BLK_MAX_CDB;
rq->tag = -1;
rq->internal_tag = -1;
rq->start_time = jiffies;
@@ -160,8 +158,6 @@ static void req_bio_endio(struct request *rq, struct bio *bio,
void blk_dump_rq_flags(struct request *rq, char *msg)
{
- int bit;
-
printk(KERN_INFO "%s: dev %s: type=%x, flags=%llx\n", msg,
rq->rq_disk ? rq->rq_disk->disk_name : "?", rq->cmd_type,
(unsigned long long) rq->cmd_flags);
@@ -171,13 +167,6 @@ void blk_dump_rq_flags(struct request *rq, char *msg)
blk_rq_sectors(rq), blk_rq_cur_sectors(rq));
printk(KERN_INFO " bio %p, biotail %p, len %u\n",
rq->bio, rq->biotail, blk_rq_bytes(rq));
-
- if (rq->cmd_type == REQ_TYPE_BLOCK_PC) {
- printk(KERN_INFO " cdb: ");
- for (bit = 0; bit < BLK_MAX_CDB; bit++)
- printk("%02x ", rq->cmd[bit]);
- printk("\n");
- }
}
EXPORT_SYMBOL(blk_dump_rq_flags);
@@ -1316,18 +1305,6 @@ struct request *blk_get_request(struct request_queue *q, int rw, gfp_t gfp_mask)
EXPORT_SYMBOL(blk_get_request);
/**
- * blk_rq_set_block_pc - initialize a request to type BLOCK_PC
- * @rq: request to be initialized
- *
- */
-void blk_rq_set_block_pc(struct request *rq)
-{
- rq->cmd_type = REQ_TYPE_BLOCK_PC;
- memset(rq->__cmd, 0, sizeof(rq->__cmd));
-}
-EXPORT_SYMBOL(blk_rq_set_block_pc);
-
-/**
* blk_requeue_request - put a request back on queue
* @q: request queue where request should be inserted
* @rq: request to be inserted
@@ -2459,14 +2436,6 @@ void blk_start_request(struct request *req)
wbt_issue(req->q->rq_wb, &req->issue_stat);
}
- /*
- * We are now handing the request to the hardware, initialize
- * resid_len to full count and add the timeout handler.
- */
- req->resid_len = blk_rq_bytes(req);
- if (unlikely(blk_bidi_rq(req)))
- req->next_rq->resid_len = blk_rq_bytes(req->next_rq);
-
BUG_ON(test_bit(REQ_ATOM_COMPLETE, &req->atomic_flags));
blk_add_timer(req);
}