shrink_slab_memcg() may iterate for a long time without resched if we have many memcg with small amount of objects. Add cond_resched() to avoid potential softlockup.
https://jira.sw.ru/browse/PSBM-125095 Signed-off-by: Andrey Ryabinin <aryabi...@virtuozzo.com> --- mm/vmscan.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/mm/vmscan.c b/mm/vmscan.c index 080500f4e366..17a7ed60f525 100644 --- a/mm/vmscan.c +++ b/mm/vmscan.c @@ -527,6 +527,8 @@ static unsigned long shrink_slab_memcg(gfp_t gfp_mask, int nid, struct shrinker *shrinker; bool is_nfs; + cond_resched(); + shrinker = idr_find(&shrinker_idr, i); if (unlikely(!shrinker)) { clear_bit(i, map->map); -- 2.26.2 _______________________________________________ Devel mailing list Devel@openvz.org https://lists.openvz.org/mailman/listinfo/devel
