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-rw-r--r--block/blk.h17
1 files changed, 17 insertions, 0 deletions
diff --git a/block/blk.h b/block/blk.h
index e837b8f619b..c90e1d8f7a2 100644
--- a/block/blk.h
+++ b/block/blk.h
@@ -10,6 +10,7 @@
#define BLK_BATCH_REQ 32
extern struct kmem_cache *blk_requestq_cachep;
+extern struct kmem_cache *request_cachep;
extern struct kobj_type blk_queue_ktype;
extern struct ida blk_queue_ida;
@@ -34,14 +35,30 @@ bool __blk_end_bidi_request(struct request *rq, int error,
unsigned int nr_bytes, unsigned int bidi_bytes);
void blk_rq_timed_out_timer(unsigned long data);
+void blk_rq_check_expired(struct request *rq, unsigned long *next_timeout,
+ unsigned int *next_set);
+void __blk_add_timer(struct request *req, struct list_head *timeout_list);
void blk_delete_timer(struct request *);
void blk_add_timer(struct request *);
+
+bool bio_attempt_front_merge(struct request_queue *q, struct request *req,
+ struct bio *bio);
+bool bio_attempt_back_merge(struct request_queue *q, struct request *req,
+ struct bio *bio);
+bool blk_attempt_plug_merge(struct request_queue *q, struct bio *bio,
+ unsigned int *request_count);
+
+void blk_account_io_start(struct request *req, bool new_io);
+void blk_account_io_completion(struct request *req, unsigned int bytes);
+void blk_account_io_done(struct request *req);
+
/*
* Internal atomic flags for request handling
*/
enum rq_atomic_flags {
REQ_ATOM_COMPLETE = 0,
+ REQ_ATOM_STARTED,
};
/*