[PATCH] add end_request helpers that deal in bytes, not sectors

This adds an end_that_request_chunk() helper, that puts the core
functionality in __end_that_request_first().  This one deals in bytes.
end_that_request_first() does the 512 multiply, and then
end_that_request_chunk() can just use it directly.

This enables ide-cd to do proper dma in sizes that are not sector
aligned.  Some of the most important CD functions (ripping audio dma,
burning audio cds, burning raw cds) _require_ this or we will be in pio.
That stinks.  We simply cannot use pio for these, not on writers much
that are fast!

1 files changed, 1 insertions, 0 deletions

diff --git a/include/linux/blk.h b/include/linux/blk.h
index b225609f2ee7..6f47ea7c853c 100644
--- a/include/linux/blk.h
+++ b/include/linux/blk.h
@@ -39,6 +39,7 @@ void initrd_init(void);
  */
 
 extern int end_that_request_first(struct request *, int, int);
+extern int end_that_request_chunk(struct request *, int, int);
 extern void end_that_request_last(struct request *);
 struct request *elv_next_request(request_queue_t *q);