linux-kernel - Re: [PATCH 1/4] stringbuf: A string buffer implementation

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Message-Id: <200710301526.31664.vda.linux@googlemail.com>
Date:	Tue, 30 Oct 2007 15:26:31 +0000
From:	Denys Vlasenko <vda.linux@...glemail.com>
To:	Matthew Wilcox <matthew@....cx>
Cc:	torvalds@...ux-foundation.org, akpm@...ux-foundation.org,
	linux-kernel@...r.kernel.org,
	Matthew Wilcox <willy@...ux.intel.com>
Subject: Re: [PATCH 1/4] stringbuf: A string buffer implementation

On Tuesday 23 October 2007 22:12, Matthew Wilcox wrote:
> Consecutive calls to printk are non-atomic, which leads to various
> implementations for accumulating strings which can be printed in one call.
> This is a generic string buffer which can also be used for non-printk
> purposes.  There is no sb_scanf implementation yet as I haven't identified
> a user for it.
> 
> Signed-off-by: Matthew Wilcox <willy@...ux.intel.com>

> +static inline void sb_free(struct stringbuf *sb)
> +{
> +	if (sb->alloc > 0)
> +		kfree(sb->s);
> +	sb_init(sb);
> +}

> +static inline char *sb_to_string(struct stringbuf *sb)
> +{
> +	char *s = sb->s;
> +	if (sb_error(sb))
> +		s = kstrdup(s, GFP_ATOMIC);
> +	sb_init(sb);
> +	return s;
> +}

I am not sure inlining these functions is a win.
--
vda
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