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slub: Remove slabs_node() function 

When traversing nodes one by one, the get_node() function called in
for_each_kmem_cache_node macro, no need to call get_node() again in
slabs_node(), just reading nr_slabs field should be enough. However, the
node_nr_slabs() function can do this. Hence, the slabs_node() function
is not needed anymore.

Signed-off-by: Xiongwei Song <xiongwei.song@windriver.com>
Signed-off-by: Vlastimil Babka <vbabka@suse.cz>
This commit is contained in:
Xiongwei Song 2023-04-13 22:34:51 +08:00 committed by Vlastimil Babka
parent c6c17c4dc3
commit 4f174a8bac
1 changed files with 3 additions and 13 deletions
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16
mm/slub.c
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@ -1344,14 +1344,6 @@ static void remove_full(struct kmem_cache *s, struct kmem_cache_node *n, struct
list_del(&slab->slab_list);
}
/* Tracking of the number of slabs for debugging purposes */
static inline unsigned long slabs_node(struct kmem_cache *s, int node)
{
struct kmem_cache_node *n = get_node(s, node);
return atomic_long_read(&n->nr_slabs);
}
static inline unsigned long node_nr_slabs(struct kmem_cache_node *n)
{
return atomic_long_read(&n->nr_slabs);
@ -1722,8 +1714,6 @@ slab_flags_t kmem_cache_flags(unsigned int object_size,
#define disable_higher_order_debug 0
static inline unsigned long slabs_node(struct kmem_cache *s, int node)
{ return 0; }
static inline unsigned long node_nr_slabs(struct kmem_cache_node *n)
{ return 0; }
static inline void inc_slabs_node(struct kmem_cache *s, int node,
@ -4598,7 +4588,7 @@ 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 (n->nr_partial || node_nr_slabs(n))
return false;
return true;
}
@ -4615,7 +4605,7 @@ 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 (n->nr_partial || node_nr_slabs(n))
return 1;
}
return 0;
@ -4828,7 +4818,7 @@ static int __kmem_cache_do_shrink(struct kmem_cache *s)
list_for_each_entry_safe(slab, t, &discard, slab_list)
free_slab(s, slab);
if (slabs_node(s, node))
if (node_nr_slabs(n))
ret = 1;
}