mm, hwpoison: add comment describing when to add new cases

Here's another comment fix for hwpoison.

It describes the "guiding principle" on when to add new
memory error recovery code.

Signed-off-by: Andi Kleen <ak@linux.intel.com>
Acked-by: Naoya Horiguchi <n-horiguchi@ah.jp.nec.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Andi Kleen 2015-06-24 16:56:02 -07:00 • committed by Linus Torvalds
commit e0de78dfb4