Messages in this thread |  | | Date | Wed, 23 Mar 2011 15:58:53 -0700 | From | Greg KH <> | Subject | Re: [stable] [PATCH] mm: PageBuddy and mapcount underflows robustness |
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On Fri, Mar 18, 2011 at 02:34:03PM -0700, Hugh Dickins wrote: > On Fri, 18 Mar 2011, Andrea Arcangeli wrote: > > On Mon, Mar 14, 2011 at 10:30:11AM -0700, Linus Torvalds wrote: > > Subject: mm: PageBuddy and mapcount robustness > > > > From: Andrea Arcangeli <aarcange@redhat.com> > > > > Change the _mapcount value indicating PageBuddy from -2 to -128 for > > more robusteness against page_mapcount() undeflows. > > > > Use reset_page_mapcount instead of __ClearPageBuddy in bad_page to > > ignore the previous retval of PageBuddy(). > > > > Signed-off-by: Andrea Arcangeli <aarcange@redhat.com> > > Reported-by: Hugh Dickins <hughd@google.com> > > Yes, this version satisfies my objections too. > I'd say Acked-by but I see that it's already in, great. > > I've Cc'ed stable@kernel.org: please can we have this in 2.6.38.1, > since 2.6.38 regressed the recovery from bad page states, > inadvertently changing them to a fatal error when CONFIG_DEBUG_VM.
Now queued up for 2.6.38.2, thanks.
greg k-h
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