linux-kernel - Re: [PATCH v3 01/35] lib/string_helpers: Add flags param to string_get

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Date: Wed, 14 Feb 2024 20:11:05 +0000
From: Matthew Wilcox <willy@...radead.org>
To: Suren Baghdasaryan <surenb@...gle.com>
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	Noralf Trønnes <noralf@...nnes.org>
Subject: Re: [PATCH v3 01/35] lib/string_helpers: Add flags param to
 string_get_size()

On Mon, Feb 12, 2024 at 01:38:47PM -0800, Suren Baghdasaryan wrote:
> -	string_get_size(size, 1, STRING_UNITS_2, buf, sizeof(buf));
> +	string_get_size(size, 1, STRING_SIZE_BASE2, buf, sizeof(buf));

This patch could be a whole lot smaller if ...

> +++ b/include/linux/string_helpers.h
> @@ -17,14 +17,13 @@ static inline bool string_is_terminated(const char *s, int len)
>  	return memchr(s, '\0', len) ? true : false;
>  }
>  
> -/* Descriptions of the types of units to
> - * print in */
> -enum string_size_units {
> -	STRING_UNITS_10,	/* use powers of 10^3 (standard SI) */
> -	STRING_UNITS_2,		/* use binary powers of 2^10 */
> +enum string_size_flags {
> +	STRING_SIZE_BASE2	= (1 << 0),
> +	STRING_SIZE_NOSPACE	= (1 << 1),
> +	STRING_SIZE_NOBYTES	= (1 << 2),

you just added:

#define	STRING_UNITS_10		0
#define STRING_UNITS_2		STRING_SIZE_BASE2

and you wouldn't need to change any of the callers.