]> git.proxmox.com Git - mirror_ubuntu-eoan-kernel.git/commit
mm/memory-failure: set PageHWPoison before migrate_pages()
authorNaoya Horiguchi <n-horiguchi@ah.jp.nec.com>
Thu, 6 Aug 2015 22:47:11 +0000 (15:47 -0700)
committerLinus Torvalds <torvalds@linux-foundation.org>
Fri, 7 Aug 2015 01:39:42 +0000 (04:39 +0300)
commit4491f7126063ef51081f5662bd4fcae31621a333
tree0ebbdbf7d1eec49ec3727876524a95e48f317727
parentf4c18e6f7b5bbb5b528b3334115806b0d76f50f9
mm/memory-failure: set PageHWPoison before migrate_pages()

Now page freeing code doesn't consider PageHWPoison as a bad page, so by
setting it before completing the page containment, we can prevent the
error page from being reused just after successful page migration.

I added TTU_IGNORE_HWPOISON for try_to_unmap() to make sure that the
page table entry is transformed into migration entry, not to hwpoison
entry.

Signed-off-by: Naoya Horiguchi <n-horiguchi@ah.jp.nec.com>
Cc: Andi Kleen <andi@firstfloor.org>
Cc: Dean Nelson <dnelson@redhat.com>
Cc: Tony Luck <tony.luck@intel.com>
Cc: "Kirill A. Shutemov" <kirill@shutemov.name>
Cc: Hugh Dickins <hughd@google.com>
Cc: David Rientjes <rientjes@google.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
mm/memory-failure.c
mm/migrate.c