block: Add bio_clone_bioset(), bio_clone_kmalloc()
Previously, there was bio_clone() but it only allocated from the fs bio
set; as a result various users were open coding it and using
__bio_clone().
This changes bio_clone() to become bio_clone_bioset(), and then we add
bio_clone() and bio_clone_kmalloc() as wrappers around it, making use of
the functionality the last patch adedd.
This will also help in a later patch changing how bio cloning works.
Signed-off-by: Kent Overstreet <koverstreet@google.com>
CC: Jens Axboe <axboe@kernel.dk>
CC: NeilBrown <neilb@suse.de>
CC: Alasdair Kergon <agk@redhat.com>
CC: Boaz Harrosh <bharrosh@panasas.com>
CC: Jeff Garzik <jeff@garzik.org>
Acked-by: Jeff Garzik <jgarzik@redhat.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
diff --git a/drivers/md/dm-crypt.c b/drivers/md/dm-crypt.c
index 3c0acba..bbf459b 100644
--- a/drivers/md/dm-crypt.c
+++ b/drivers/md/dm-crypt.c
@@ -979,19 +979,14 @@
* copy the required bvecs because we need the original
* one in order to decrypt the whole bio data *afterwards*.
*/
- clone = bio_alloc_bioset(gfp, bio_segments(base_bio), cc->bs);
+ clone = bio_clone_bioset(base_bio, gfp, cc->bs);
if (!clone)
return 1;
crypt_inc_pending(io);
clone_init(io, clone);
- clone->bi_idx = 0;
- clone->bi_vcnt = bio_segments(base_bio);
- clone->bi_size = base_bio->bi_size;
clone->bi_sector = cc->start + io->sector;
- memcpy(clone->bi_io_vec, bio_iovec(base_bio),
- sizeof(struct bio_vec) * clone->bi_vcnt);
generic_make_request(clone);
return 0;