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author | Christoph Hellwig <hch@lst.de> | 2015-01-18 16:16:29 +0100 |
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committer | Jens Axboe <axboe@fb.com> | 2015-02-05 17:30:37 +0100 |
commit | ddad8dd0a162fde61646a627a3017c258601dc8a (patch) | |
tree | 62a0c931c0efb7cd86457e1908ceb1655997c595 /block/bio.c | |
parent | block: simplify bio_map_kern (diff) | |
download | linux-ddad8dd0a162fde61646a627a3017c258601dc8a.tar.xz linux-ddad8dd0a162fde61646a627a3017c258601dc8a.zip |
block: use blk_rq_map_user_iov to implement blk_rq_map_user
Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Ming Lei <tom.leiming@gmail.com>
Signed-off-by: Jens Axboe <axboe@fb.com>
Diffstat (limited to 'block/bio.c')
-rw-r--r-- | block/bio.c | 53 |
1 files changed, 1 insertions, 52 deletions
diff --git a/block/bio.c b/block/bio.c index 54da51ed43de..879921e6b049 100644 --- a/block/bio.c +++ b/block/bio.c @@ -1102,7 +1102,7 @@ static int __bio_copy_iov(struct bio *bio, const struct sg_iovec *iov, int iov_c * bio_uncopy_user - finish previously mapped bio * @bio: bio being terminated * - * Free pages allocated from bio_copy_user() and write back data + * Free pages allocated from bio_copy_user_iov() and write back data * to user space in case of a read. */ int bio_uncopy_user(struct bio *bio) @@ -1256,32 +1256,6 @@ out_bmd: return ERR_PTR(ret); } -/** - * bio_copy_user - copy user data to bio - * @q: destination block queue - * @map_data: pointer to the rq_map_data holding pages (if necessary) - * @uaddr: start of user address - * @len: length in bytes - * @write_to_vm: bool indicating writing to pages or not - * @gfp_mask: memory allocation flags - * - * Prepares and returns a bio for indirect user io, bouncing data - * to/from kernel pages as necessary. Must be paired with - * call bio_uncopy_user() on io completion. - */ -struct bio *bio_copy_user(struct request_queue *q, struct rq_map_data *map_data, - unsigned long uaddr, unsigned int len, - int write_to_vm, gfp_t gfp_mask) -{ - struct sg_iovec iov; - - iov.iov_base = (void __user *)uaddr; - iov.iov_len = len; - - return bio_copy_user_iov(q, map_data, &iov, 1, write_to_vm, gfp_mask); -} -EXPORT_SYMBOL(bio_copy_user); - static struct bio *__bio_map_user_iov(struct request_queue *q, struct block_device *bdev, const struct sg_iovec *iov, int iov_count, @@ -1395,31 +1369,6 @@ static struct bio *__bio_map_user_iov(struct request_queue *q, } /** - * bio_map_user - map user address into bio - * @q: the struct request_queue 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 - * @gfp_mask: memory allocation flags - * - * 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(struct request_queue *q, struct block_device *bdev, - unsigned long uaddr, unsigned int len, int write_to_vm, - gfp_t gfp_mask) -{ - struct sg_iovec iov; - - iov.iov_base = (void __user *)uaddr; - iov.iov_len = len; - - return bio_map_user_iov(q, bdev, &iov, 1, write_to_vm, gfp_mask); -} -EXPORT_SYMBOL(bio_map_user); - -/** * bio_map_user_iov - map user sg_iovec table into bio * @q: the struct request_queue for the bio * @bdev: destination block device |