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bcache: don't clone bio in bch_data_verify 

We immediately overwrite the biovec array, so instead just allocate
a new bio and copy over the disk, setor and size.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Ming Lei <ming.lei@redhat.com>
Acked-by: Coly Li <colyli@suse.de>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
hifive-unleashed-5.1
Christoph Hellwig 2018-07-24 09:52:30 +02:00 committed by Jens Axboe
parent 3bb5098310
commit c8b27acc77
1 changed files with 5 additions and 1 deletions
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6
drivers/md/bcache/debug.c
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@ -110,11 +110,15 @@ void bch_data_verify(struct cached_dev *dc, struct bio *bio)
struct bio_vec bv, cbv;
struct bvec_iter iter, citer = { 0 };
check = bio_clone_kmalloc(bio, GFP_NOIO);
check = bio_kmalloc(GFP_NOIO, bio_segments(bio));
if (!check)
return;
check->bi_disk = bio->bi_disk;
check->bi_opf = REQ_OP_READ;
check->bi_iter.bi_sector = bio->bi_iter.bi_sector;
check->bi_iter.bi_size = bio->bi_iter.bi_size;
bch_bio_map(check, NULL);
if (bch_bio_alloc_pages(check, GFP_NOIO))
goto out_put;