From: "Mizuma, Masayoshi" <[email protected]> Subject: mm/hugetlb.c: add cond_resched_lock() in return_unused_surplus_pages()
soft lockup in freeing gigantic hugepage fixed in commit 55f67141a892 "mm: hugetlb: fix softlockup when a large number of hugepages are freed." can happen in return_unused_surplus_pages(), so let's fix it. Signed-off-by: Masayoshi Mizuma <[email protected]> Signed-off-by: Naoya Horiguchi <[email protected]> Cc: Joonsoo Kim <[email protected]> Cc: Michal Hocko <[email protected]> Cc: Aneesh Kumar <[email protected]> Cc: KOSAKI Motohiro <[email protected]> Cc: <[email protected]> Signed-off-by: Andrew Morton <[email protected]> --- mm/hugetlb.c | 1 + 1 file changed, 1 insertion(+) diff -puN mm/hugetlb.c~mm-hugetlbc-add-cond_resched_lock-in-return_unused_surplus_pages mm/hugetlb.c --- a/mm/hugetlb.c~mm-hugetlbc-add-cond_resched_lock-in-return_unused_surplus_pages +++ a/mm/hugetlb.c @@ -1172,6 +1172,7 @@ static void return_unused_surplus_pages( while (nr_pages--) { if (!free_pool_huge_page(h, &node_states[N_MEMORY], 1)) break; + cond_resched_lock(&hugetlb_lock); } } _ -- To unsubscribe from this list: send the line "unsubscribe stable" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html
