Re: [PATCH v2 12/15] slab: create kmem_cache_create() compatibility layer

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On Wed, Sep 04, 2024 at 08:14:24AM GMT, Mike Rapoport wrote:
> On Tue, Sep 03, 2024 at 04:20:53PM +0200, Christian Brauner wrote:
> > Use _Generic() to create a compatibility layer that type switches on the
> > third argument to either call __kmem_cache_create() or
> > __kmem_cache_create_args(). This can be kept in place until all callers
> > have been ported to struct kmem_cache_args.
> > 
> > Signed-off-by: Christian Brauner <brauner@xxxxxxxxxx>
> 
> Reviewed-by: Mike Rapoport (Microsoft) <rppt@xxxxxxxxxx>
> 
> > ---
> >  include/linux/slab.h | 13 ++++++++++---
> >  mm/slab_common.c     | 10 +++++-----
> >  2 files changed, 15 insertions(+), 8 deletions(-)
> > 
> > diff --git a/include/linux/slab.h b/include/linux/slab.h
> > index aced16a08700..4292d67094c3 100644
> > --- a/include/linux/slab.h
> > +++ b/include/linux/slab.h
> > @@ -261,9 +261,10 @@ struct kmem_cache *__kmem_cache_create_args(const char *name,
> >  					    unsigned int object_size,
> >  					    struct kmem_cache_args *args,
> >  					    slab_flags_t flags);
> > -struct kmem_cache *kmem_cache_create(const char *name, unsigned int size,
> > -			unsigned int align, slab_flags_t flags,
> > -			void (*ctor)(void *));
> > +
> > +struct kmem_cache *__kmem_cache_create(const char *name, unsigned int size,
> > +				       unsigned int align, slab_flags_t flags,
> > +				       void (*ctor)(void *));
> 
> As I said earlier, this can become _kmem_cache_create and
> __kmem_cache_create_args can be __kmem_cache_create from the beginning.
> 
> And as a followup cleanup both kmem_cache_create_usercopy() and
> kmem_cache_create() can be made static inlines.

Seems an ok suggestion to me. See the two patches I sent out now.




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