From c8b27acc775990bbd01f067ee7616f7abf2c98a1 Mon Sep 17 00:00:00 2001 From: Christoph Hellwig Date: Tue, 24 Jul 2018 09:52:30 +0200 Subject: [PATCH] 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 Reviewed-by: Ming Lei Acked-by: Coly Li Signed-off-by: Jens Axboe --- drivers/md/bcache/debug.c | 6 +++++- 1 file changed, 5 insertions(+), 1 deletion(-) diff --git a/drivers/md/bcache/debug.c b/drivers/md/bcache/debug.c index d030ce3025a6..04d146711950 100644 --- a/drivers/md/bcache/debug.c +++ b/drivers/md/bcache/debug.c @@ -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; -- 2.30.2