2012/9/5 <[email protected]> > > From: Wen Congyang <[email protected]> > > hwpoisoned may set when we offline a page by the sysfs interface > /sys/devices/system/memory/soft_offline_page or > /sys/devices/system/memory/hard_offline_page. If we don't clear > this flag when onlining pages, this page can't be freed, and will > not in free list. So we can't offline these pages again. So we > should clear this flag when onlining pages. > > CC: David Rientjes <[email protected]> > CC: Jiang Liu <[email protected]> > CC: Len Brown <[email protected]> > CC: Benjamin Herrenschmidt <[email protected]> > CC: Paul Mackerras <[email protected]> > CC: Christoph Lameter <[email protected]> > Cc: Minchan Kim <[email protected]> > CC: Andrew Morton <[email protected]> > CC: KOSAKI Motohiro <[email protected]> > CC: Yasuaki Ishimatsu <[email protected]> > Signed-off-by: Wen Congyang <[email protected]> > --- > mm/memory_hotplug.c | 5 +++++ > 1 files changed, 5 insertions(+), 0 deletions(-) > > diff --git a/mm/memory_hotplug.c b/mm/memory_hotplug.c > index 270c249..140c080 100644 > --- a/mm/memory_hotplug.c > +++ b/mm/memory_hotplug.c > @@ -661,6 +661,11 @@ EXPORT_SYMBOL_GPL(__online_page_increment_counters); > > void __online_page_free(struct page *page) > { > +#ifdef CONFIG_MEMORY_FAILURE > + /* The page may be marked HWPoisoned by soft/hard offline page */ > + ClearPageHWPoison(page);
Hi Congyang, I think you should decrease mce_bad_pages counter her atomic_long_sub(1, &mce_bad_pages); > > +#endif > + > ClearPageReserved(page); > init_page_count(page); > __free_page(page); > -- > 1.7.1 > > -- > To unsubscribe, send a message with 'unsubscribe linux-mm' in > the body to [email protected]. For more info on Linux MM, > see: http://www.linux-mm.org/ . > Don't email: <a href=mailto:"[email protected]";> [email protected] </a> -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
