At 09/06/2012 03:27 PM, andywu106建国 Wrote: > 2012/9/5 <we...@cn.fujitsu.com> >> >> From: Wen Congyang <we...@cn.fujitsu.com> >> >> 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 <rient...@google.com> >> CC: Jiang Liu <liu...@gmail.com> >> CC: Len Brown <len.br...@intel.com> >> CC: Benjamin Herrenschmidt <b...@kernel.crashing.org> >> CC: Paul Mackerras <pau...@samba.org> >> CC: Christoph Lameter <c...@linux.com> >> Cc: Minchan Kim <minchan....@gmail.com> >> CC: Andrew Morton <a...@linux-foundation.org> >> CC: KOSAKI Motohiro <kosaki.motoh...@jp.fujitsu.com> >> CC: Yasuaki Ishimatsu <isimatu.yasu...@jp.fujitsu.com> >> Signed-off-by: Wen Congyang <we...@cn.fujitsu.com> >> --- >> 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);
Yes, thanks for pointing it out. Thanks Wen Congyang > >> >> +#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 majord...@kvack.org. For more info on Linux MM, >> see: http://www.linux-mm.org/ . >> Don't email: <a href=mailto:"d...@kvack.org"> em...@kvack.org </a> > _______________________________________________ Linuxppc-dev mailing list Linuxppc-dev@lists.ozlabs.org https://lists.ozlabs.org/listinfo/linuxppc-dev