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-rw-r--r--block/blk.h4
1 files changed, 4 insertions, 0 deletions
diff --git a/block/blk.h b/block/blk.h
index 79be2cbce7fd..95cab70000e3 100644
--- a/block/blk.h
+++ b/block/blk.h
@@ -9,6 +9,9 @@
/* Number of requests a "batching" process may submit */
#define BLK_BATCH_REQ 32
+/* Max future timer expiry for timeouts */
+#define BLK_MAX_TIMEOUT (5 * HZ)
+
extern struct kmem_cache *blk_requestq_cachep;
extern struct kmem_cache *request_cachep;
extern struct kobj_type blk_queue_ktype;
@@ -37,6 +40,7 @@ bool __blk_end_bidi_request(struct request *rq, int error,
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);
+unsigned long blk_rq_timeout(unsigned long timeout);
void blk_add_timer(struct request *req);
void blk_delete_timer(struct request *);