From: "Gustavo A. R. Silva" <[email protected]>
Date: Tue, 15 Jan 2019 17:05:39 -0600
> One of the more common cases of allocation size calculations is finding
> the size of a structure that has a zero-sized array at the end, along
> with memory for some number of elements for that array. For example:
>
> struct foo {
> int stuff;
> void *entry[];
> };
>
> instance = kzalloc(sizeof(struct foo) + sizeof(void *) * count, GFP_KERNEL);
>
> Instead of leaving these open-coded and prone to type mistakes, we can
> now use the new struct_size() helper:
>
> instance = kzalloc(struct_size(instance, entry, count), GFP_KERNEL);
>
> This issue was detected with the help of Coccinelle.
>
> Reviewed-by: Ido Schimmel <[email protected]>
> Signed-off-by: Gustavo A. R. Silva <[email protected]>
Applied.
