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SubjectRe: [PATCH] HWPOISON: Implement hwpoison-on-free for soft offlining
On Tue, Oct 12, 2010 at 02:23:15PM +0000, Penttilä Mika wrote:
> > >> bad_page(page);
> > >> return 1;
> > >> }
> > > And of course PAGE_FLAGS_CHECK_AT_FREE should include
> > > pahehwpoisononfree this to be effective
> >
> > It is of course (__PG_HWPOISON_ON_FREE)
> >
> Yes but it's not included in PAGE_FLAGS_CHECK_AT_FREE, if I'm not missing something

#ifdef CONFIG_HWPOISON_ON_FREE
PAGEFLAG(HWPoisonOnFree, hwpoison_on_free)
TESTSCFLAG(HWPoisonOnFree, hwpoison_on_free)
#define __PG_HWPOISON_ON_FREE (1UL << PG_hwpoison_on_free)
#else
PAGEFLAG_FALSE(HWPoisonOnFree)
SETPAGEFLAG_NOOP(HWPoisonOnFree)
#define __PG_HWPOISON_ON_FREE 0
#endif

...

#define PAGE_FLAGS_CHECK_AT_FREE \
(1 << PG_lru | 1 << PG_locked | \
1 << PG_private | 1 << PG_private_2 | \
1 << PG_buddy | 1 << PG_writeback | 1 << PG_reserved | \
1 << PG_slab | 1 << PG_swapcache | 1 << PG_active | \
1 << PG_unevictable | __PG_MLOCKED | __PG_HWPOISON | \
__PG_HWPOISON_ON_FREE)

-Andi
--
ak@linux.intel.com -- Speaking for myself only.
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