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authorMizuma, Masayoshi <[email protected]>2014-04-18 15:07:18 -0700
committerLinus Torvalds <[email protected]>2014-04-18 16:40:08 -0700
commit7848a4bf51b34f41fcc9bd77e837126d99ae84e3 (patch)
tree229cc0ba9f40530d043ec153ec688de86249bde0
parent8b32201de1f87878ace971bfdc2846a4f3a5bb2b (diff)
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]> Signed-off-by: Linus Torvalds <[email protected]>
-rw-r--r--mm/hugetlb.c1
1 files changed, 1 insertions, 0 deletions
diff --git a/mm/hugetlb.c b/mm/hugetlb.c
index dd30f22b35e0..246192929a2d 100644
--- a/mm/hugetlb.c
+++ b/mm/hugetlb.c
@@ -1172,6 +1172,7 @@ static void return_unused_surplus_pages(struct hstate *h,
while (nr_pages--) {
if (!free_pool_huge_page(h, &node_states[N_MEMORY], 1))
break;
+ cond_resched_lock(&hugetlb_lock);
}
}