| #ifndef INT_BLK_MQ_TAG_H |
| #define INT_BLK_MQ_TAG_H |
| |
| struct blk_mq_tags; |
| |
| extern struct blk_mq_tags *blk_mq_init_tags(unsigned int nr_tags, unsigned int reserved_tags, int node); |
| extern void blk_mq_free_tags(struct blk_mq_tags *tags); |
| |
| extern unsigned int blk_mq_get_tag(struct blk_mq_tags *tags, gfp_t gfp, bool reserved); |
| extern void blk_mq_wait_for_tags(struct blk_mq_tags *tags); |
| extern void blk_mq_put_tag(struct blk_mq_tags *tags, unsigned int tag); |
| extern void blk_mq_tag_busy_iter(struct blk_mq_tags *tags, void (*fn)(void *data, unsigned long *), void *data); |
| extern bool blk_mq_has_free_tags(struct blk_mq_tags *tags); |
| extern ssize_t blk_mq_tag_sysfs_show(struct blk_mq_tags *tags, char *page); |
| |
| enum { |
| BLK_MQ_TAG_CACHE_MIN = 1, |
| BLK_MQ_TAG_CACHE_MAX = 64, |
| }; |
| |
| enum { |
| BLK_MQ_TAG_FAIL = -1U, |
| BLK_MQ_TAG_MIN = BLK_MQ_TAG_CACHE_MIN, |
| BLK_MQ_TAG_MAX = BLK_MQ_TAG_FAIL - 1, |
| }; |
| |
| #endif |
