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block: remove unused function blk_bio_map_sg

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Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Jens Axboe <axboe@fb.com>
This commit is contained in:
Christoph Hellwig 2015-02-11 14:07:50 +01:00 committed by Jens Axboe
parent a0763b27bf
commit d427e3c82e
2 changed files with 0 additions and 31 deletions
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29
block/blk-merge.c
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@ -283,35 +283,6 @@ int blk_rq_map_sg(struct request_queue *q, struct request *rq,
} }
EXPORT_SYMBOL(blk_rq_map_sg); EXPORT_SYMBOL(blk_rq_map_sg);
/**
* blk_bio_map_sg - map a bio to a scatterlist
* @q: request_queue in question
* @bio: bio being mapped
* @sglist: scatterlist being mapped
*
* Note:
* Caller must make sure sg can hold bio->bi_phys_segments entries
*
* Will return the number of sg entries setup
*/
int blk_bio_map_sg(struct request_queue *q, struct bio *bio,
struct scatterlist *sglist)
{
struct scatterlist *sg = NULL;
int nsegs;
struct bio *next = bio->bi_next;
bio->bi_next = NULL;
nsegs = __blk_bios_map_sg(q, bio, sglist, &sg);
bio->bi_next = next;
if (sg)
sg_mark_end(sg);
BUG_ON(bio->bi_phys_segments && nsegs > bio->bi_phys_segments);
return nsegs;
}
EXPORT_SYMBOL(blk_bio_map_sg);
static inline int ll_new_hw_segment(struct request_queue *q, static inline int ll_new_hw_segment(struct request_queue *q,
struct request *req, struct request *req,
struct bio *bio) struct bio *bio)

2
include/linux/blkdev.h
View file

@ -1049,8 +1049,6 @@ extern void blk_queue_flush_queueable(struct request_queue *q, bool queueable);
extern struct backing_dev_info *blk_get_backing_dev_info(struct block_device *bdev); extern struct backing_dev_info *blk_get_backing_dev_info(struct block_device *bdev);
extern int blk_rq_map_sg(struct request_queue *, struct request *, struct scatterlist *); extern int blk_rq_map_sg(struct request_queue *, struct request *, struct scatterlist *);
extern int blk_bio_map_sg(struct request_queue *q, struct bio *bio,
struct scatterlist *sglist);
extern void blk_dump_rq_flags(struct request *, char *); extern void blk_dump_rq_flags(struct request *, char *);
extern long nr_blockdev_pages(void); extern long nr_blockdev_pages(void);