Re: [PATCH] mm: avoid possible multiple call to swap_node()

[Matthew Wilcox]

On Thu, Sep 17, 2020 at 07:44:49AM -0400, Miaohe Lin wrote:
> Cache the swap_node() in a local variable to avoid possible multiple call
> to swap_node(), though compiler may do this for us.

Why don't you find out?  Compare the assembly before and after, see what
the compiler did.