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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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5
fs/exofs/ore.c
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@ -814,8 +814,8 @@ static int _write_mirror(struct ore_io_state *ios, int cur_comp)
struct bio *bio;
if (per_dev != master_dev) {
bio = bio_kmalloc(GFP_KERNEL,
master_dev->bio->bi_max_vecs);
bio = bio_clone_kmalloc(master_dev->bio,
GFP_KERNEL);
if (unlikely(!bio)) {
ORE_DBGMSG(
"Failed to allocate BIO size=%u\n",
@ -824,7 +824,6 @@ static int _write_mirror(struct ore_io_state *ios, int cur_comp)
goto out;
}
__bio_clone(bio, master_dev->bio);
bio->bi_bdev = NULL;
bio->bi_next = NULL;
per_dev->offset = master_dev->offset;