Re: [PATCH 1/2] ipc sem: use kvmalloc for sem_undo allocation

[Shakeel Butt]

On Mon, Apr 26, 2021 at 3:18 AM Vasily Averin <vvs@xxxxxxxxxxxxx> wrote:
>
> size of sem_undo can exceed one page and with the maximum possible
> nsems = 32000 it can grow up to 64Kb. Let's switch its allocation
> to kvmalloc to avoid user-triggered disruptive actions like OOM killer
> in case of high-order memory shortage.
>
> Signed-off-by: Vasily Averin <vvs@xxxxxxxxxxxxx>

Reviewed-by: Shakeel Butt <shakeelb@xxxxxxxxxx>