Re: [PATCH 1/3] mm: Add kvrealloc()

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On Fri, Jun 25, 2021 at 12:30:27PM +1000, Dave Chinner wrote:
> diff --git a/include/linux/mm.h b/include/linux/mm.h
> index 8ae31622deef..34d88ff00f31 100644
> --- a/include/linux/mm.h
> +++ b/include/linux/mm.h
> @@ -830,6 +830,20 @@ static inline void *kvcalloc(size_t n, size_t size, gfp_t flags)
>  extern void kvfree(const void *addr);
>  extern void kvfree_sensitive(const void *addr, size_t len);
>  
> +static inline void *kvrealloc(void *p, size_t oldsize, size_t newsize,
> +		gfp_t flags)
> +{
> +	void *newp;
> +
> +	if (oldsize >= newsize)
> +		return p;
> +	newp = kvmalloc(newsize, flags);
> +	memcpy(newp, p, oldsize);
> +	kvfree(p);
> +	return newp;
> +}

Why make this an inline function instead of putting it in mm/util.c?




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