Messages in this thread Patch in this message | | | From | Jianfeng Wang <> | Subject | [PATCH v3 2/2] slub: use count_partial_free_approx() in slab_out_of_memory() | Date | Fri, 19 Apr 2024 10:56:11 -0700 |
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slab_out_of_memory() uses count_partial() to get the exact count of free objects for each node. As it may get called in the slab allocation path, count_partial_free_approx() can be used to avoid the risk and overhead of traversing a long partial slab list.
At the same time, show_slab_objects() still uses count_partial(). Thus, slub users can still have the option to access the exact count of objects via sysfs if the overhead is acceptable to them.
Signed-off-by: Jianfeng Wang <jianfeng.w.wang@oracle.com> --- mm/slub.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/mm/slub.c b/mm/slub.c index 993cbbdd2b6c..fa55699aa21a 100644 --- a/mm/slub.c +++ b/mm/slub.c @@ -3292,7 +3292,7 @@ slab_out_of_memory(struct kmem_cache *s, gfp_t gfpflags, int nid) unsigned long nr_objs; unsigned long nr_free; - nr_free = count_partial(n, count_free); + nr_free = count_partial_free_approx(n); nr_slabs = node_nr_slabs(n); nr_objs = node_nr_objs(n); -- 2.42.1
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