mm/hwpoison: retry with shake_page() for unhandlable pages
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>
Please register or sign in to comment