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mm, slab: remove the corner case of inc_slabs_node()

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We already have the inc_slabs_node() after kmem_cache_node->node[node]
initialized in early_kmem_cache_node_alloc(), this special case of
inc_slabs_node() can be removed. Then we don't need to consider the
existence of kmem_cache_node in inc_slabs_node() anymore.

Signed-off-by: Chengming Zhou <chengming.zhou@linux.dev>
Signed-off-by: Vlastimil Babka <vbabka@suse.cz>
This commit is contained in:
Chengming Zhou 2024-02-22 13:02:33 +00:00 committed by Vlastimil Babka
parent 011568eb31
commit 3dd549a557
1 changed files with 2 additions and 11 deletions
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13
mm/slub.c
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@ -1498,16 +1498,8 @@ static inline void inc_slabs_node(struct kmem_cache *s, int node, int objects)
{
struct kmem_cache_node *n = get_node(s, node);
/*
* May be called early in order to allocate a slab for the
* kmem_cache_node structure. Solve the chicken-egg
* dilemma by deferring the increment of the count during
* bootstrap (see early_kmem_cache_node_alloc).
*/
if (likely(n)) {
atomic_long_inc(&n->nr_slabs);
atomic_long_add(objects, &n->total_objects);
}
atomic_long_inc(&n->nr_slabs);
atomic_long_add(objects, &n->total_objects);
}
static inline void dec_slabs_node(struct kmem_cache *s, int node, int objects)
{
@ -4855,7 +4847,6 @@ static void early_kmem_cache_node_alloc(int node)
slab = new_slab(kmem_cache_node, GFP_NOWAIT, node);
BUG_ON(!slab);
inc_slabs_node(kmem_cache_node, slab_nid(slab), slab->objects);
if (slab_nid(slab) != node) {
pr_err("SLUB: Unable to allocate memory from node %d\n", node);
pr_err("SLUB: Allocating a useless per node structure in order to be able to continue\n");