[PATCH 2/3] mm/slub: Use node_nr_slabs() instead of slabs_node()

[Muchun Song]

In the some code, we already get the kmem_cache_node, so we can
use node_nr_slabs() directly instead of slabs_node(). Check the
condition of n->nr_partial can also be removed because we can get
the correct result via node_nr_slabs().

Signed-off-by: Muchun Song <songmuc...@bytedance.com>
---
 mm/slub.c | 8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)

diff --git a/mm/slub.c b/mm/slub.c
index 1a3e6a5b7287..b73505df3de2 100644
--- a/mm/slub.c
+++ b/mm/slub.c
@@ -3829,7 +3829,7 @@ bool __kmem_cache_empty(struct kmem_cache *s)
        struct kmem_cache_node *n;
 
        for_each_kmem_cache_node(s, node, n)
-               if (n->nr_partial || slabs_node(s, node))
+               if (node_nr_slabs(n))
                        return false;
        return true;
 }
@@ -3846,7 +3846,7 @@ int __kmem_cache_shutdown(struct kmem_cache *s)
        /* Attempt to free all objects */
        for_each_kmem_cache_node(s, node, n) {
                free_partial(s, n);
-               if (n->nr_partial || slabs_node(s, node))
+               if (node_nr_slabs(n))
                        return 1;
        }
        sysfs_slab_remove(s);
@@ -4126,7 +4126,7 @@ int __kmem_cache_shrink(struct kmem_cache *s)
                list_for_each_entry_safe(page, t, &discard, slab_list)
                        discard_slab(s, page);
 
-               if (slabs_node(s, node))
+               if (node_nr_slabs(n))
                        ret = 1;
        }
 
@@ -4201,7 +4201,7 @@ static void slab_mem_offline_callback(void *arg)
                         * and offline_pages() function shouldn't call this
                         * callback. So, we must fail.
                         */
-                       BUG_ON(slabs_node(s, offline_node));
+                       BUG_ON(node_nr_slabs(n));
 
                        s->node[offline_node] = NULL;
                        kmem_cache_free(kmem_cache_node, n);
-- 
2.11.0