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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>
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@ -143,7 +143,7 @@ static void queue_flush(struct request_queue *q, unsigned which)
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end_io = post_flush_end_io;
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}
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rq_init(q, rq);
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blk_rq_init(q, rq);
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rq->cmd_flags = REQ_HARDBARRIER;
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rq->rq_disk = q->bar_rq.rq_disk;
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rq->end_io = end_io;
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@ -165,7 +165,7 @@ static inline struct request *start_ordered(struct request_queue *q,
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blkdev_dequeue_request(rq);
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q->orig_bar_rq = rq;
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rq = &q->bar_rq;
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rq_init(q, rq);
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blk_rq_init(q, rq);
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if (bio_data_dir(q->orig_bar_rq->bio) == WRITE)
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rq->cmd_flags |= REQ_RW;
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if (q->ordered & QUEUE_ORDERED_FUA)
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@ -107,7 +107,7 @@ struct backing_dev_info *blk_get_backing_dev_info(struct block_device *bdev)
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}
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EXPORT_SYMBOL(blk_get_backing_dev_info);
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void rq_init(struct request_queue *q, struct request *rq)
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void blk_rq_init(struct request_queue *q, struct request *rq)
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{
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memset(rq, 0, sizeof(*rq));
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@ -120,6 +120,7 @@ void rq_init(struct request_queue *q, struct request *rq)
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rq->tag = -1;
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rq->ref_count = 1;
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}
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EXPORT_SYMBOL(blk_rq_init);
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static void req_bio_endio(struct request *rq, struct bio *bio,
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unsigned int nbytes, int error)
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@ -598,7 +599,7 @@ blk_alloc_request(struct request_queue *q, int rw, int priv, gfp_t gfp_mask)
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if (!rq)
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return NULL;
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rq_init(q, rq);
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blk_rq_init(q, rq);
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/*
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* first three bits are identical in rq->cmd_flags and bio->bi_rw,
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@ -10,7 +10,6 @@
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extern struct kmem_cache *blk_requestq_cachep;
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extern struct kobj_type blk_queue_ktype;
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void rq_init(struct request_queue *q, struct request *rq);
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void init_request_from_bio(struct request *req, struct bio *bio);
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void blk_rq_bio_prep(struct request_queue *q, struct request *rq,
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struct bio *bio);
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@ -607,6 +607,7 @@ extern int blk_register_queue(struct gendisk *disk);
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extern void blk_unregister_queue(struct gendisk *disk);
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extern void register_disk(struct gendisk *dev);
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extern void generic_make_request(struct bio *bio);
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extern void blk_rq_init(struct request_queue *q, struct request *rq);
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extern void blk_put_request(struct request *);
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extern void __blk_put_request(struct request_queue *, struct request *);
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extern void blk_end_sync_rq(struct request *rq, int error);
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