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Commit 31d33baf authored by Christoph Lameter's avatar Christoph Lameter Committed by Pekka Enberg
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slub: Simplify any_slab_object checks 



Since we now have total_objects counter per node use that to
check for the presence of any objects. The loop over all cpu slabs
is not that useful since any cpu slab would require an object allocation
first. So drop that.

Signed-off-by: default avatarChristoph Lameter <clameter@sgi.com>
Signed-off-by: default avatarPekka Enberg <penberg@cs.helsinki.fi>
parent 06b285dc

mm/slub.c

+1 −9
Original line number Diff line number Diff line
@@ -3775,14 +3775,6 @@ static ssize_t show_slab_objects(struct kmem_cache *s, 
static int any_slab_objects(struct kmem_cache *s)

{

	int node;

	int cpu;



	for_each_possible_cpu(cpu) {

		struct kmem_cache_cpu *c = get_cpu_slab(s, cpu);



		if (c && c->page)

			return 1;

	}



	for_each_online_node(node) {

		struct kmem_cache_node *n = get_node(s, node);
@@ -3790,7 +3782,7 @@ static int any_slab_objects(struct kmem_cache *s) 
		if (!n)

			continue;



		if (n->nr_partial || atomic_long_read(&n->nr_slabs))

		if (atomic_read(&n->total_objects))

			return 1;

	}

	return 0;