linux-kernel - Re: [PATCH v5 03/37] mm/slub: Mark slab_free_freelist_hook() __always

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Message-ID: <b4e5a48f-9a43-4f80-a3e7-75c04dba9a0f@suse.cz>
Date: Wed, 13 Mar 2024 14:53:08 +0100
From: Vlastimil Babka <vbabka@...e.cz>
To: Suren Baghdasaryan <surenb@...gle.com>, akpm@...ux-foundation.org
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Subject: Re: [PATCH v5 03/37] mm/slub: Mark slab_free_freelist_hook()
 __always_inline

On 3/6/24 19:24, Suren Baghdasaryan wrote:
> From: Kent Overstreet <kent.overstreet@...ux.dev>
> 
> It seems we need to be more forceful with the compiler on this one.
> This is done for performance reasons only.
> 
> Signed-off-by: Kent Overstreet <kent.overstreet@...ux.dev>
> Signed-off-by: Suren Baghdasaryan <surenb@...gle.com>
> Reviewed-by: Kees Cook <keescook@...omium.org>
> Reviewed-by: Pasha Tatashin <pasha.tatashin@...een.com>

Reviewed-by: Vlastimil Babka <vbabka@...e.cz>

> ---
>  mm/slub.c | 6 +++---
>  1 file changed, 3 insertions(+), 3 deletions(-)
> 
> diff --git a/mm/slub.c b/mm/slub.c
> index 2ef88bbf56a3..0f3369f6188b 100644
> --- a/mm/slub.c
> +++ b/mm/slub.c
> @@ -2121,9 +2121,9 @@ bool slab_free_hook(struct kmem_cache *s, void *x, bool init)
>  	return !kasan_slab_free(s, x, init);
>  }
>  
> -static inline bool slab_free_freelist_hook(struct kmem_cache *s,
> -					   void **head, void **tail,
> -					   int *cnt)
> +static __fastpath_inline
> +bool slab_free_freelist_hook(struct kmem_cache *s, void **head, void **tail,
> +			     int *cnt)
>  {
>  
>  	void *object;