| Message ID | 20230104060605.930910-1-feng.tang@intel.com (mailing list archive) |
|---|---|
| State | New |
| Headers | show |
| Series | [v3,-mm,1/2] mm/slab: add is_kmalloc_cache() helper function | expand |
On Wed, 4 Jan 2023, Feng Tang wrote: > commit 6edf2576a6cc ("mm/slub: enable debugging memory wasting of > kmalloc") introduces 'SLAB_KMALLOC' bit specifying whether a > kmem_cache is a kmalloc cache for slab/slub (slob doesn't have > dedicated kmalloc caches). > > Add a helper inline function for other components like kasan to > simplify code. > > Signed-off-by: Feng Tang <feng.tang@intel.com> > Acked-by: Vlastimil Babka <vbabka@suse.cz> > Acked-by: Hyeonggon Yoo <42.hyeyoo@gmail.com> Acked-by: David Rientjes <rientjes@google.com>
diff --git a/mm/slab.h b/mm/slab.h index 7cc432969945..63fb4c00d529 100644 --- a/mm/slab.h +++ b/mm/slab.h @@ -323,6 +323,14 @@ static inline slab_flags_t kmem_cache_flags(unsigned int object_size, } #endif +static inline bool is_kmalloc_cache(struct kmem_cache *s) +{ +#ifndef CONFIG_SLOB + return (s->flags & SLAB_KMALLOC); +#else + return false; +#endif +} /* Legal flag mask for kmem_cache_create(), for various configurations */ #define SLAB_CORE_FLAGS (SLAB_HWCACHE_ALIGN | SLAB_CACHE_DMA | \
commit 6edf2576a6cc ("mm/slub: enable debugging memory wasting of kmalloc") introduces 'SLAB_KMALLOC' bit specifying whether a kmem_cache is a kmalloc cache for slab/slub (slob doesn't have dedicated kmalloc caches). Add a helper inline function for other components like kasan to simplify code. Signed-off-by: Feng Tang <feng.tang@intel.com> Acked-by: Vlastimil Babka <vbabka@suse.cz> Acked-by: Hyeonggon Yoo <42.hyeyoo@gmail.com> --- changlog: since v2: * fix type in subject(Vlastimil Babka) * collect Acked-by tag since v1: * don't use macro for the helper (Andrew Morton) * place the inline function in mm/slab.h to solve data structure definition issue (Vlastimil Babka) mm/slab.h | 8 ++++++++ 1 file changed, 8 insertions(+)