[PATCH v2 1/3] mm/slub: remove the check of !kmem_cache_has_cpu_partial()

From: xiongwei.song
Date: Thu Apr 04 2024 - 01:59:27 EST


From: Xiongwei Song <xiongwei.song@xxxxxxxxxxxxx>

The check of !kmem_cache_has_cpu_partial(s) with
CONFIG_SLUB_CPU_PARTIAL enabled here is always false.

We have already checked kmem_cache_debug() earlier and if it was true,
then we either continued or broke from the loop so we can't reach this
code in that case and don't need to check kmem_cache_debug() as part of
kmem_cache_has_cpu_partial() again. Here we can remove it.

Signed-off-by: Xiongwei Song <xiongwei.song@xxxxxxxxxxxxx>
---
mm/slub.c | 3 +--
1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/mm/slub.c b/mm/slub.c
index 1bb2a93cf7b6..059922044a4f 100644
--- a/mm/slub.c
+++ b/mm/slub.c
@@ -2610,8 +2610,7 @@ static struct slab *get_partial_node(struct kmem_cache *s,
partial_slabs++;
}
#ifdef CONFIG_SLUB_CPU_PARTIAL
- if (!kmem_cache_has_cpu_partial(s)
- || partial_slabs > s->cpu_partial_slabs / 2)
+ if (partial_slabs > s->cpu_partial_slabs / 2)
break;
#else
break;
--
2.34.1