block: Add interface to abort queued requests

Signed-off-by: Mike Anderson <andmike@linux.vnet.ibm.com>
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>

3 files changed, 4 insertions, 0 deletions

diff --git a/include/linux/blkdev.h b/include/linux/blkdev.h
index 067f28b80072..37781d6fe045 100644
--- a/include/linux/blkdev.h
+++ b/include/linux/blkdev.h
@@ -788,6 +788,7 @@ extern int blk_end_request_callback(struct request *rq, int error,
 extern void blk_complete_request(struct request *);
 extern void __blk_complete_request(struct request *);
 extern void blk_abort_request(struct request *);
+extern void blk_abort_queue(struct request_queue *);
 
 /*
  * blk_end_request() takes bytes instead of sectors as a complete size.
diff --git a/include/linux/blktrace_api.h b/include/linux/blktrace_api.h
index 27da2cc682ee..dcaf2452ed1f 100644
--- a/include/linux/blktrace_api.h
+++ b/include/linux/blktrace_api.h
@@ -48,6 +48,7 @@ enum blktrace_act {
         __BLK_TA_SPLIT,                 /* bio was split */
         __BLK_TA_BOUNCE,                /* bio was bounced */
         __BLK_TA_REMAP,                 /* bio was remapped */
+        __BLK_TA_ABORT,                 /* request aborted */
 };
 
 /*
@@ -78,6 +79,7 @@ enum blktrace_notify {
 #define BLK_TA_SPLIT            (__BLK_TA_SPLIT)
 #define BLK_TA_BOUNCE           (__BLK_TA_BOUNCE)
 #define BLK_TA_REMAP            (__BLK_TA_REMAP | BLK_TC_ACT(BLK_TC_QUEUE))
+#define BLK_TA_ABORT            (__BLK_TA_ABORT | BLK_TC_ACT(BLK_TC_QUEUE))
 
 #define BLK_TN_PROCESS          (__BLK_TN_PROCESS | BLK_TC_ACT(BLK_TC_NOTIFY))
 #define BLK_TN_TIMESTAMP        (__BLK_TN_TIMESTAMP | BLK_TC_ACT(BLK_TC_NOTIFY))
diff --git a/include/linux/elevator.h b/include/linux/elevator.h
index bb791c311a56..92f6f634e3e6 100644
--- a/include/linux/elevator.h
+++ b/include/linux/elevator.h
@@ -112,6 +112,7 @@ extern struct request *elv_latter_request(struct request_queue *, struct request
 extern int elv_register_queue(struct request_queue *q);
 extern void elv_unregister_queue(struct request_queue *q);
 extern int elv_may_queue(struct request_queue *, int);
+extern void elv_abort_queue(struct request_queue *);
 extern void elv_completed_request(struct request_queue *, struct request *);
 extern int elv_set_request(struct request_queue *, struct request *, gfp_t);
 extern void elv_put_request(struct request_queue *, struct request *);