Re: [PATCH v2 1/5] mm,hwpoison: Take free pages off the buddy freelists

2020-09-10 Thread 堀口 直也
On Tue, Sep 08, 2020 at 09:56:22AM +0200, Oscar Salvador wrote: > The crux of the matter is that historically we left poisoned pages > in the buddy system because we have some checks in place when > allocating a page that a gatekeeper for poisoned pages. > Unfortunately, we do have other users (e.g

[PATCH v2 1/5] mm,hwpoison: Take free pages off the buddy freelists

2020-09-08 Thread Oscar Salvador
The crux of the matter is that historically we left poisoned pages in the buddy system because we have some checks in place when allocating a page that a gatekeeper for poisoned pages. Unfortunately, we do have other users (e.g: compaction [1]) that scan buddy freelists and try to get a page from t