On Wed, Dec 30, 2020 at 8:45 PM Matthew Wilcox <willy@xxxxxxxxxxxxx> wrote: > > On Wed, Dec 30, 2020 at 07:40:14PM +0800, Hui Su wrote: > > local variable node_order do not need the static here. > > It bloody well does. It can be up to 2^10 entries on x86 (and larger > on others) That's 4kB which you've now moved onto the stack. This is not the first time I have seen similar changes. So what do you think about adding a comment here to avoid another one do this in the feature? > > Please, learn more about what you're doing. I suggest sending patches > to drivers/staging; that will help you learn how to submit patches to > linux.