357 int blk_alloc_devt(struct hd_struct *part, dev_t *devt);
364 void delete_partition(struct hd_struct *part);
371 int hd_ref_init(struct hd_struct *part);
374 static inline int hd_struct_try_get(struct hd_struct *part)  in hd_struct_try_get()  argument
376 	if (part->partno)  in hd_struct_try_get()
377 		return percpu_ref_tryget_live(&part->ref);  in hd_struct_try_get()
381 static inline void hd_struct_put(struct hd_struct *part)  in hd_struct_put()  argument
383 	if (part->partno)  in hd_struct_put()
384 		percpu_ref_put(&part->ref);  in hd_struct_put()
387 static inline void hd_free_part(struct hd_struct *part)  in hd_free_part()  argument
389 	free_percpu(part->dkstats);  in hd_free_part()
390 	kfree(part->info);  in hd_free_part()
391 	percpu_ref_exit(&part->ref);  in hd_free_part()
403 static inline sector_t part_nr_sects_read(struct hd_struct *part)  in part_nr_sects_read()  argument
409 		seq = read_seqcount_begin(&part->nr_sects_seq);  in part_nr_sects_read()
410 		nr_sects = part->nr_sects;  in part_nr_sects_read()
411 	} while (read_seqcount_retry(&part->nr_sects_seq, seq));  in part_nr_sects_read()
417 	nr_sects = part->nr_sects;  in part_nr_sects_read()
421 	return part->nr_sects;  in part_nr_sects_read()
430 static inline void part_nr_sects_write(struct hd_struct *part, sector_t size)  in part_nr_sects_write()  argument
434 	write_seqcount_begin(&part->nr_sects_seq);  in part_nr_sects_write()
435 	part->nr_sects = size;  in part_nr_sects_write()
436 	write_seqcount_end(&part->nr_sects_seq);  in part_nr_sects_write()
440 	part->nr_sects = size;  in part_nr_sects_write()
443 	part->nr_sects = size;  in part_nr_sects_write()