commit 0e75f9063f5c55fb0b0b546a7c356f8ec186825e
author Mike Christie <michaelc@cs.wisc.edu> Fri Dec 01 10:40:55 2006 +0100
committer Jens Axboe <jens.axboe@oracle.com> Fri Dec 01 10:40:55 2006 +0100
tree db138f641175403546c2147def4b405f3ff453a8
parent ad2d7225709b11da47e092634cbdf0591829ae9c

[PATCH] block: support larger block pc requests

This patch modifies blk_rq_map/unmap_user() and the cdrom and scsi_ioctl.c
users so that it supports requests larger than bio by chaining them together.

Signed-off-by: Mike Christie <michaelc@cs.wisc.edu>
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>

include/linux/blkdev.h

diff --git a/include/linux/blkdev.h b/include/linux/blkdev.h
index 7bfcde2..e1c7286 100644
--- a/include/linux/blkdev.h
+++ b/include/linux/blkdev.h
@@ -678,10 +678,11 @@
 extern void blk_run_queue(request_queue_t *);
 extern void blk_start_queueing(request_queue_t *);
 extern void blk_queue_activity_fn(request_queue_t *, activity_fn *, void *);
-extern int blk_rq_map_user(request_queue_t *, struct request *, void __user *, unsigned int);
-extern int blk_rq_unmap_user(struct bio *, unsigned int);
+extern int blk_rq_map_user(request_queue_t *, struct request *, void __user *, unsigned long);
+extern int blk_rq_unmap_user(struct request *);
 extern int blk_rq_map_kern(request_queue_t *, struct request *, void *, unsigned int, gfp_t);
-extern int blk_rq_map_user_iov(request_queue_t *, struct request *, struct sg_iovec *, int);
+extern int blk_rq_map_user_iov(request_queue_t *, struct request *,
+			       struct sg_iovec *, int, unsigned int);
 extern int blk_execute_rq(request_queue_t *, struct gendisk *,
 			  struct request *, int);
 extern void blk_execute_rq_nowait(request_queue_t *, struct gendisk *,