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Merge branch 'for-3.16/blk-mq-tagging' into for-3.16/core

Browse source 
Signed-off-by: Jens Axboe <axboe@fb.com>

Conflicts:
	block/blk-mq-tag.c
This commit is contained in:
Jens Axboe 2014-05-19 11:52:35 -06:00
commit 39a9f97e5e
9 changed files with 236 additions and 27 deletions
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7
include/linux/blk-mq.h
View file

@ -54,6 +54,8 @@ struct blk_mq_hw_ctx {
unsigned int numa_node;
unsigned int cmd_size; /* per-request extra data */
atomic_t nr_active;
struct blk_mq_cpu_notifier cpu_notifier;
struct kobject kobj;
};
@ -70,6 +72,9 @@ struct blk_mq_tag_set {
void *driver_data;
struct blk_mq_tags **tags;
struct mutex tag_list_lock;
struct list_head tag_list;
};
typedef int (queue_rq_fn)(struct blk_mq_hw_ctx *, struct request *);
@ -132,8 +137,10 @@ enum {
BLK_MQ_F_SHOULD_MERGE = 1 << 0,
BLK_MQ_F_SHOULD_SORT = 1 << 1,
BLK_MQ_F_TAG_SHARED = 1 << 2,
BLK_MQ_S_STOPPED = 0,
BLK_MQ_S_TAG_ACTIVE = 1,
BLK_MQ_MAX_DEPTH = 2048,

2
include/linux/blk_types.h
View file

@ -190,6 +190,7 @@ enum rq_flag_bits {
__REQ_PM, /* runtime pm request */
__REQ_END, /* last of chain of requests */
__REQ_HASHED, /* on IO scheduler merge hash */
__REQ_MQ_INFLIGHT, /* track inflight for MQ */
__REQ_NR_BITS, /* stops here */
};
@ -243,5 +244,6 @@ enum rq_flag_bits {
#define REQ_PM (1ULL << __REQ_PM)
#define REQ_END (1ULL << __REQ_END)
#define REQ_HASHED (1ULL << __REQ_HASHED)
#define REQ_MQ_INFLIGHT (1ULL << __REQ_MQ_INFLIGHT)
#endif /* __LINUX_BLK_TYPES_H */

3
include/linux/blkdev.h
View file

@ -481,6 +481,9 @@ struct request_queue {
wait_queue_head_t mq_freeze_wq;
struct percpu_counter mq_usage_counter;
struct list_head all_q_node;
struct blk_mq_tag_set *tag_set;
struct list_head tag_set_list;
};
#define QUEUE_FLAG_QUEUED 1 /* uses generic tag queueing */