blk_end_request: add/export functions to get request size (take 4)

[linux-2.6-omap-h63xx.git] / include / linux / blkdev.h

diff --git a/include/linux/blkdev.h b/include/linux/blkdev.h
index 3b212f02db8df6b5570306e24fe8d482e7a69fec..aa2341df7932f9ab673857f43f3ebe4b3e64c4f7 100644 (file)
--- a/include/linux/blkdev.h
+++ b/include/linux/blkdev.h
@@ -736,6 +736,14 @@ extern void end_queued_request(struct request *, int);
 extern void end_dequeued_request(struct request *, int);
 extern void blk_complete_request(struct request *);
 
+/*
+ * blk_end_request() takes bytes instead of sectors as a complete size.
+ * blk_rq_bytes() returns bytes left to complete in the entire request.
+ * blk_rq_cur_bytes() returns bytes left to complete in the current segment.
+ */
+extern unsigned int blk_rq_bytes(struct request *rq);
+extern unsigned int blk_rq_cur_bytes(struct request *rq);
+
 /*
  * end_that_request_first/chunk() takes an uptodate argument. we account
  * any value <= as an io error. 0 means -EIO for compatability reasons,