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block: display the correct diskname for bio
bio_devname use __bdevname to display the device name, and can
only show the major and minor of the part0,
Fix this by using disk_name to display the correct name.
Fixes: 74d46992e0
("block: replace bi_bdev with a gendisk pointer and partitions index")
Reviewed-by: Omar Sandoval <osandov@fb.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Jiufei Xue <jiufei.xue@linux.alibaba.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
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@ -51,6 +51,12 @@ const char *bdevname(struct block_device *bdev, char *buf)
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EXPORT_SYMBOL(bdevname);
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const char *bio_devname(struct bio *bio, char *buf)
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{
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return disk_name(bio->bi_disk, bio->bi_partno, buf);
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}
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EXPORT_SYMBOL(bio_devname);
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/*
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* There's very little reason to use this, you should really
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* have a struct block_device just about everywhere and use
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@ -511,6 +511,7 @@ void zero_fill_bio(struct bio *bio);
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extern struct bio_vec *bvec_alloc(gfp_t, int, unsigned long *, mempool_t *);
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extern void bvec_free(mempool_t *, struct bio_vec *, unsigned int);
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extern unsigned int bvec_nr_vecs(unsigned short idx);
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extern const char *bio_devname(struct bio *bio, char *buffer);
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#define bio_set_dev(bio, bdev) \
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do { \
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@ -529,9 +530,6 @@ do { \
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#define bio_dev(bio) \
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disk_devt((bio)->bi_disk)
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#define bio_devname(bio, buf) \
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__bdevname(bio_dev(bio), (buf))
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#ifdef CONFIG_BLK_CGROUP
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int bio_associate_blkcg(struct bio *bio, struct cgroup_subsys_state *blkcg_css);
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void bio_disassociate_task(struct bio *bio);
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