On 2020/6/18 06:33, Gustavo A. R. Silva wrote: > Make use of the struct_size() helper instead of an open-coded version > in order to avoid any potential type mistakes. > > This code was detected with the help of Coccinelle and, audited and > fixed manually. > > Signed-off-by: Gustavo A. R. Silva <gustavoars@xxxxxxxxxx> The patch looks good to me, and I assume you already test and verify the change. I will add them in my for-test directory. Thanks. Coly Li > --- > drivers/md/bcache/movinggc.c | 4 ++-- > 1 file changed, 2 insertions(+), 2 deletions(-) > > diff --git a/drivers/md/bcache/movinggc.c b/drivers/md/bcache/movinggc.c > index 7891fb512736..b7dd2d75f58c 100644 > --- a/drivers/md/bcache/movinggc.c > +++ b/drivers/md/bcache/movinggc.c > @@ -145,8 +145,8 @@ static void read_moving(struct cache_set *c) > continue; > } > > - io = kzalloc(sizeof(struct moving_io) + sizeof(struct bio_vec) > - * DIV_ROUND_UP(KEY_SIZE(&w->key), PAGE_SECTORS), > + io = kzalloc(struct_size(io, bio.bio.bi_inline_vecs, > + DIV_ROUND_UP(KEY_SIZE(&w->key), PAGE_SECTORS)), > GFP_KERNEL); > if (!io) > goto err; >
