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dm: remove dm_get_mapinfo
Remove dm_get_mapinfo() because no target uses it. Targets can allocate per-bio data using ti->per_bio_data_size, this is much more flexible than union map_info. Leave union map_info only for the request-based multipath target's use. Also delete the unused "unsigned long long ll" field of union map_info. Signed-off-by: Mikulas Patocka <mpatocka@redhat.com> Signed-off-by: Mike Snitzer <snitzer@redhat.com>
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2 changed files with 0 additions and 13 deletions
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@ -94,13 +94,6 @@ struct dm_rq_clone_bio_info {
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struct bio clone;
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};
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union map_info *dm_get_mapinfo(struct bio *bio)
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{
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if (bio && bio->bi_private)
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return &((struct dm_target_io *)bio->bi_private)->info;
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return NULL;
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}
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union map_info *dm_get_rq_mapinfo(struct request *rq)
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{
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if (rq && rq->end_io_data)
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@ -1195,7 +1188,6 @@ static struct dm_target_io *alloc_tio(struct clone_info *ci,
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tio->io = ci->io;
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tio->ti = ti;
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memset(&tio->info, 0, sizeof(tio->info));
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tio->target_bio_nr = target_bio_nr;
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return tio;
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@ -2873,8 +2865,6 @@ static const struct block_device_operations dm_blk_dops = {
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.owner = THIS_MODULE
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};
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EXPORT_SYMBOL(dm_get_mapinfo);
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/*
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* module hooks
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*/
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@ -23,7 +23,6 @@ typedef enum { STATUSTYPE_INFO, STATUSTYPE_TABLE } status_type_t;
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union map_info {
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void *ptr;
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unsigned long long ll;
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};
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/*
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@ -291,7 +290,6 @@ struct dm_target_callbacks {
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struct dm_target_io {
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struct dm_io *io;
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struct dm_target *ti;
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union map_info info;
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unsigned target_bio_nr;
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struct bio clone;
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};
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@ -403,7 +401,6 @@ int dm_copy_name_and_uuid(struct mapped_device *md, char *name, char *uuid);
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struct gendisk *dm_disk(struct mapped_device *md);
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int dm_suspended(struct dm_target *ti);
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int dm_noflush_suspending(struct dm_target *ti);
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union map_info *dm_get_mapinfo(struct bio *bio);
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union map_info *dm_get_rq_mapinfo(struct request *rq);
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struct queue_limits *dm_get_queue_limits(struct mapped_device *md);
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