| Message ID | 1600601186-7420-8-git-send-email-Julia.Lawall@inria.fr (mailing list archive) |
|---|---|
| State | Not Applicable |
| Headers | show |
| Series | drop double zeroing | expand |
From: Julia Lawall <Julia.Lawall@inria.fr> Date: Sun, 20 Sep 2020 13:26:19 +0200 > sg_init_table zeroes its first argument, so the allocation of that argument > doesn't have to. > > the semantic patch that makes this change is as follows: > (http://coccinelle.lip6.fr/) > > // <smpl> > @@ > expression x,n,flags; > @@ > > x = > - kcalloc > + kmalloc_array > (n,sizeof(*x),flags) > ... > sg_init_table(x,n) > // </smpl> > > Signed-off-by: Julia Lawall <Julia.Lawall@inria.fr> Applied.
diff -u -p a/net/rds/rdma.c b/net/rds/rdma.c --- a/net/rds/rdma.c +++ b/net/rds/rdma.c @@ -269,7 +269,7 @@ static int __rds_rdma_map(struct rds_soc goto out; } else { nents = ret; - sg = kcalloc(nents, sizeof(*sg), GFP_KERNEL); + sg = kmalloc_array(nents, sizeof(*sg), GFP_KERNEL); if (!sg) { ret = -ENOMEM; goto out;
sg_init_table zeroes its first argument, so the allocation of that argument doesn't have to. the semantic patch that makes this change is as follows: (http://coccinelle.lip6.fr/) // <smpl> @@ expression x,n,flags; @@ x = - kcalloc + kmalloc_array (n,sizeof(*x),flags) ... sg_init_table(x,n) // </smpl> Signed-off-by: Julia Lawall <Julia.Lawall@inria.fr> --- net/rds/rdma.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)