linux-kernel - Re: Q. d_alloc() in pipe(2)

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Date:	Tue, 29 Dec 2009 23:02:35 +0800
From:	Américo Wang <xiyou.wangcong@...il.com>
To:	hooanon05@...oo.co.jp
Cc:	viro@...IV.linux.org.uk, linux-kernel@...r.kernel.org
Subject: Re: Q. d_alloc() in pipe(2)

On Tue, Dec 29, 2009 at 02:55:20PM +0900, hooanon05@...oo.co.jp wrote:
>
>In pipe(2), create_write_pipe() creates a dentry by
>	struct qstr name = { .name = "" };
>	d_alloc(root, &name);
>
>But d_alloc() refers name->len which is uninitialized.

Well, it is initialized to 0. :)

>Isn't it better to replace d_alloc() by d_alloc_name(root, "")?
>

Maybe not, they totally equal in this case, IMO.

-- 
Live like a child, think like the god.

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