block: rename and export rq_init()

This rename rq_init() blk_rq_init() and export it. Any path that hands
the request to the block layer needs to call it to initialize the
request.

This is a preparation for large command support, which needs to
initialize the request in a proper way (that is, just doing a memset()
will not work).

Signed-off-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp>
Cc: Jens Axboe <jens.axboe@oracle.com>
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>

1 files changed, 3 insertions, 2 deletions

diff --git a/block/blk-core.c b/block/blk-core.c
index d2f23ec5ebfa..fe0d1390b743 100644
--- a/block/blk-core.c
+++ b/block/blk-core.c
@@ -107,7 +107,7 @@ struct backing_dev_info *blk_get_backing_dev_info(struct block_device *bdev)
 }
 EXPORT_SYMBOL(blk_get_backing_dev_info);
 
-void rq_init(struct request_queue *q, struct request *rq)
+void blk_rq_init(struct request_queue *q, struct request *rq)
 {
         memset(rq, 0, sizeof(*rq));
 
@@ -120,6 +120,7 @@ void rq_init(struct request_queue *q, struct request *rq)
         rq->tag = -1;
         rq->ref_count = 1;
 }
+EXPORT_SYMBOL(blk_rq_init);
 
 static void req_bio_endio(struct request *rq, struct bio *bio,
                           unsigned int nbytes, int error)
@@ -598,7 +599,7 @@ blk_alloc_request(struct request_queue *q, int rw, int priv, gfp_t gfp_mask)
         if (!rq)
                 return NULL;
 
-        rq_init(q, rq);
+        blk_rq_init(q, rq);
 
         /*
          * first three bits are identical in rq->cmd_flags and bio->bi_rw,