From: "Paul E. McKenney" <[email protected]> This commit applies the __GFP_NOMEMALLOC gfp flag to memory allocations carried out by the single-argument variant of kvfree_rcu(), thus avoiding this can-sleep code path from dipping into the emergency reserves.
Acked-by: Michal Hocko <[email protected]> Suggested-by: Michal Hocko <[email protected]> Signed-off-by: Paul E. McKenney <[email protected]> Signed-off-by: Uladzislau Rezki (Sony) <[email protected]> --- kernel/rcu/tree.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/kernel/rcu/tree.c b/kernel/rcu/tree.c index 2014fb22644d..454809514c91 100644 --- a/kernel/rcu/tree.c +++ b/kernel/rcu/tree.c @@ -3491,7 +3491,7 @@ add_ptr_to_bulk_krc_lock(struct kfree_rcu_cpu **krcp, if (!bnode && can_alloc) { krc_this_cpu_unlock(*krcp, *flags); bnode = (struct kvfree_rcu_bulk_data *) - __get_free_page(GFP_KERNEL | __GFP_RETRY_MAYFAIL | __GFP_NOWARN); + __get_free_page(GFP_KERNEL | __GFP_RETRY_MAYFAIL | __GFP_NOMEMALLOC | __GFP_NOWARN); *krcp = krc_this_cpu_lock(flags); } -- 2.20.1
