mm/hwpoison: retry with shake_page() for unhandlable pages
[ Upstream commit fcc00621 ] HWPoisonHandlable() sometimes returns false for typical user pages due to races with average memory events like transfers over LRU lists. This causes failures in hwpoison handling. There's retry code for such a case but does not work because the retry loop reaches the retry limit too quickly before the page settles down to handlable state. Let get_any_page() call shake_page() to fix it. [naoya.horiguchi@nec.com: get_any_page(): return -EIO when retry limit reached] Link: https://lkml.kernel.org/r/20210819001958.2365157-1-naoya.horiguchi@linux.dev Link: https://lkml.kernel.org/r/20210817053703.2267588-1-naoya.horiguchi@linux.dev Fixes: 25182f05 ("mm,hwpoison: fix race with hugetlb page allocation") Signed-off-by:Naoya Horiguchi <naoya.horiguchi@nec.com> Reported-by:
Tony Luck <tony.luck@intel.com> Reviewed-by:
Yang Shi <shy828301@gmail.com> Cc: Oscar Salvador <osalvador@suse.de> Cc: Muchun Song <songmuchun@bytedance.com> Cc: Mike Kravetz <mike.kravetz@oracle.com> Cc: Michal Hocko <mhocko@suse.com> Cc: <stable@vger.kernel.org> [5.13+] Signed-off-by:
Andrew Morton <akpm@linux-foundation.org> Signed-off-by:
Linus Torvalds <torvalds@linux-foundation.org> Signed-off-by:
Sasha Levin <sashal@kernel.org>
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