On Thu, Apr 20, 2017 at 03:38:50PM +1000, NeilBrown wrote:
> This function allocates a bio, then a collection
> of pages. It copes with failure.
>
> It currently uses a mempool() to allocate the bio,
> but alloc_page() to allocate the pages. These fail
> in different ways, so the usage is inconsistent.
>
> Change the bio_clone() to bio_clone_kmalloc()
> so that no pool is used either for the bio or the pages.
>
> Signed-off-by: NeilBrown <ne...@suse.com>
Acked-by: Kent Overstreet <kent.overstr...@gmail.com>`
> ---
> drivers/md/bcache/debug.c | 2 +-
> 1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/drivers/md/bcache/debug.c b/drivers/md/bcache/debug.c
> index 06f55056aaae..35a5a7210e51 100644
> --- a/drivers/md/bcache/debug.c
> +++ b/drivers/md/bcache/debug.c
> @@ -110,7 +110,7 @@ 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(bio, GFP_NOIO);
> + check = bio_clone_kmalloc(bio, GFP_NOIO);
> if (!check)
> return;
> check->bi_opf = REQ_OP_READ;
>
>
