__tag_set
#define arch_kasan_set_tag(addr, tag) __tag_set(addr, tag)
(void *)__tag_set((const void *)__addr, page_kasan_tag(__page));\
(void *)__tag_set((const void *)__addr, page_kasan_tag(__page));\
curr = (u64)__tag_set(addr, tag);
struct blk_mq_tag_set *__tag_set = (q)->tag_set; \
srcu_idx = srcu_read_lock(__tag_set->srcu); \
srcu_read_unlock(__tag_set->srcu, srcu_idx); \
if (nullb->tag_set == &nullb->__tag_set)
nullb->tag_set = &nullb->__tag_set;
if (nullb->tag_set == &nullb->__tag_set)
struct blk_mq_tag_set __tag_set;