Messages in this thread | | | Date | Wed, 15 Jun 2022 09:26:13 +0200 | Subject | Re: [PATCH] mm/slub: Simplify __kmem_cache_alias() | From | Vlastimil Babka <> |
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On 5/31/22 02:55, sxwjean@me.com wrote: > From: Xiongwei Song <xiongwei.song@windriver.com> > > There is no need to do anything if sysfs_slab_alias() return nonzero > value after getting a mergeable cache. > > Signed-off-by: Xiongwei Song <xiongwei.song@windriver.com>
Thanks, added to slab/for-5.20/cleanup
> --- > mm/slub.c | 8 +++----- > 1 file changed, 3 insertions(+), 5 deletions(-) > > diff --git a/mm/slub.c b/mm/slub.c > index d8d5abf49f5f..9444277d669a 100644 > --- a/mm/slub.c > +++ b/mm/slub.c > @@ -4861,6 +4861,9 @@ __kmem_cache_alias(const char *name, unsigned int size, unsigned int align, > > s = find_mergeable(size, align, flags, name, ctor); > if (s) { > + if (sysfs_slab_alias(s, name)) > + return NULL; > + > s->refcount++; > > /* > @@ -4869,11 +4872,6 @@ __kmem_cache_alias(const char *name, unsigned int size, unsigned int align, > */ > s->object_size = max(s->object_size, size); > s->inuse = max(s->inuse, ALIGN(size, sizeof(void *))); > - > - if (sysfs_slab_alias(s, name)) { > - s->refcount--; > - s = NULL; > - } > } > > return s;
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