Re: hwpoison, shmem: fix data lost issue for 5.15.y

On Mon, Nov 14, 2022 at 10:14:03PM +0900, Naoya Horiguchi wrote:

Hi,

I'd like to request the follow commits to be backported to 5.15.y.

• dd0f230a0a80 ("mm: hwpoison: refactor refcount check handling")
• 4966455d9100 ("mm: hwpoison: handle non-anonymous THP correctly")
• a76054266661 ("mm: shmem: don't truncate page if memory failure happens")

These patches fixed a data lost issue by preventing shmem pagecache from being removed by memory error. These were not tagged for stable originally, but that's revisited recently.

And have you tested that these all apply properly (and in which order?) and work correctly?

thanks,

greg k-h