diff mbox series

[08/14] xprtrdma: drop double zeroing

Message ID 1600601186-7420-9-git-send-email-Julia.Lawall@inria.fr
State New
Headers show
Series drop double zeroing | expand

Commit Message

Julia Lawall Sept. 20, 2020, 11:26 a.m. UTC
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/sunrpc/xprtrdma/frwr_ops.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

Comments

Chuck Lever Sept. 20, 2020, 3:37 p.m. UTC | #1
Thanks, Julia!

> On Sep 20, 2020, at 7:26 AM, Julia Lawall <Julia.Lawall@inria.fr> wrote:
> 
> 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>

Acked-by: Chuck Lever <chuck.lever@oracle.com>

This one goes to Anna.


> ---
> net/sunrpc/xprtrdma/frwr_ops.c |    2 +-
> 1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff -u -p a/net/sunrpc/xprtrdma/frwr_ops.c b/net/sunrpc/xprtrdma/frwr_ops.c
> --- a/net/sunrpc/xprtrdma/frwr_ops.c
> +++ b/net/sunrpc/xprtrdma/frwr_ops.c
> @@ -124,7 +124,7 @@ int frwr_mr_init(struct rpcrdma_xprt *r_
> 	if (IS_ERR(frmr))
> 		goto out_mr_err;
> 
> -	sg = kcalloc(depth, sizeof(*sg), GFP_NOFS);
> +	sg = kmalloc_array(depth, sizeof(*sg), GFP_NOFS);
> 	if (!sg)
> 		goto out_list_err;
> 
> 

--
Chuck Lever
diff mbox series

Patch

diff -u -p a/net/sunrpc/xprtrdma/frwr_ops.c b/net/sunrpc/xprtrdma/frwr_ops.c
--- a/net/sunrpc/xprtrdma/frwr_ops.c
+++ b/net/sunrpc/xprtrdma/frwr_ops.c
@@ -124,7 +124,7 @@  int frwr_mr_init(struct rpcrdma_xprt *r_
 	if (IS_ERR(frmr))
 		goto out_mr_err;
 
-	sg = kcalloc(depth, sizeof(*sg), GFP_NOFS);
+	sg = kmalloc_array(depth, sizeof(*sg), GFP_NOFS);
 	if (!sg)
 		goto out_list_err;