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block: Add bio_clone_bioset(), bio_clone_kmalloc()

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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 <[email protected]>
CC: Jens Axboe <[email protected]>
CC: NeilBrown <[email protected]>
CC: Alasdair Kergon <[email protected]>
CC: Boaz Harrosh <[email protected]>
CC: Jeff Garzik <[email protected]>
Acked-by: Jeff Garzik <[email protected]>
Signed-off-by: Jens Axboe <[email protected]>
This commit is contained in:
Kent Overstreet 2012-09-06 15:35:02 -07:00 • committed by Jens Axboe
commit bf800ef181
8 changed files with 29 additions and 46 deletions
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3
drivers/block/osdblk.c
View file

@ -266,11 +266,10 @@ static struct bio *bio_chain_clone(struct bio *old_chain, gfp_t gfpmask)
struct bio *tmp, *new_chain = NULL, *tail = NULL;
while (old_chain) {
tmp = bio_kmalloc(gfpmask, old_chain->bi_max_vecs);
tmp = bio_clone_kmalloc(old_chain, gfpmask);
if (!tmp)
goto err_out;
__bio_clone(tmp, old_chain);
tmp->bi_bdev = NULL;
gfpmask &= ~__GFP_WAIT;
tmp->bi_next = NULL;