It's only used by blk_rq_map_user and that's the only sensible caller.
So do the iov wrapping there and kill bio_map_user.
Index: linux-2.6/drivers/block/ll_rw_blk.c
===================================================================
--- linux-2.6.orig/drivers/block/ll_rw_blk.c 2005-06-18 17:15:17.000000000 +0200
+++ linux-2.6/drivers/block/ll_rw_blk.c 2005-06-18 17:26:55.000000000 +0200
@@ -2126,9 +2126,10 @@
* direct dma. else, set up kernel bounce buffers
*/
uaddr = (unsigned long) ubuf;
- if (!(uaddr & queue_dma_alignment(q)) && !(len & queue_dma_alignment(q)))
- bio = bio_map_user(q, NULL, uaddr, len, reading);
- else
+ if (!(uaddr & queue_dma_alignment(q)) && !(len & queue_dma_alignment(q))) {
+ struct sg_iovec iov = { .iov_base = ubuf, .iov_len = len };
+ bio = bio_map_user_iov(q, NULL, &iov, 1, reading);
+ } else
bio = bio_copy_user(q, uaddr, len, reading);
if (!IS_ERR(bio)) {
Index: linux-2.6/fs/bio.c
===================================================================
--- linux-2.6.orig/fs/bio.c 2005-06-18 17:15:21.000000000 +0200
+++ linux-2.6/fs/bio.c 2005-06-18 17:26:42.000000000 +0200
@@ -662,28 +662,6 @@
}
/**
- * bio_map_user - map user address into bio
- * @q: the request_queue_t for the bio
- * @bdev: destination block device
- * @uaddr: start of user address
- * @len: length in bytes
- * @write_to_vm: bool indicating writing to pages or not
- *
- * Map the user space address into a bio suitable for io to a block
- * device. Returns an error pointer in case of error.
- */
-struct bio *bio_map_user(request_queue_t *q, struct block_device *bdev,
- unsigned long uaddr, unsigned int len, int write_to_vm)
-{
- struct sg_iovec iov;
-
- iov.iov_base = (__user void *)uaddr;
- iov.iov_len = len;
-
- return bio_map_user_iov(q, bdev, &iov, 1, write_to_vm);
-}
-
-/**
* bio_map_user_iov - map user sg_iovec table into bio
* @q: the request_queue_t for the bio
* @bdev: destination block device
@@ -1222,7 +1200,6 @@
EXPORT_SYMBOL(bio_hw_segments);
EXPORT_SYMBOL(bio_add_page);
EXPORT_SYMBOL(bio_get_nr_vecs);
-EXPORT_SYMBOL(bio_map_user);
EXPORT_SYMBOL(bio_unmap_user);
EXPORT_SYMBOL(bio_map_kern);
EXPORT_SYMBOL(bio_pair_release);
Index: linux-2.6/include/linux/bio.h
===================================================================
--- linux-2.6.orig/include/linux/bio.h 2005-06-18 17:15:21.000000000 +0200
+++ linux-2.6/include/linux/bio.h 2005-06-18 17:26:16.000000000 +0200
@@ -279,8 +279,6 @@
extern int bio_add_page(struct bio *, struct page *, unsigned int,unsigned int);
extern int bio_get_nr_vecs(struct block_device *);
-extern struct bio *bio_map_user(struct request_queue *, struct block_device *,
- unsigned long, unsigned int, int);
struct sg_iovec;
extern struct bio *bio_map_user_iov(struct request_queue *,
struct block_device *,
-
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