linux-kernel - Re: [PATCH 05/41] VFS: Make real

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Message-Id: <200911300211.nAU2BBrT007283@agora.fsl.cs.sunysb.edu>
Date:	Sun, 29 Nov 2009 21:11:11 -0500
From:	Erez Zadok <ezk@...sunysb.edu>
To:	Valerie Aurora <vaurora@...hat.com>
Cc:	Jan Blunck <jblunck@...e.de>,
	Alexander Viro <viro@...iv.linux.org.uk>,
	Christoph Hellwig <hch@...radead.org>,
	Andy Whitcroft <apw@...onical.com>,
	Scott James Remnant <scott@...onical.com>,
	Sandu Popa Marius <sandupopamarius@...il.com>,
	Jan Rekorajski <baggins@...h.mimuw.edu.pl>,
	"J. R. Okajima" <hooanon05@...oo.co.jp>,
	Arnd Bergmann <arnd@...db.de>,
	Vladimir Dronnikov <dronnikov@...il.com>,
	Felix Fietkau <nbd@...nwrt.org>, linux-fsdevel@...r.kernel.org,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH 05/41] VFS: Make real_lookup() return a struct path 

In message <1256152779-10054-6-git-send-email-vaurora@...hat.com>, Valerie Aurora writes:
> From: Jan Blunck <jblunck@...e.de>
> 
> This patch changes real_lookup() into returning a struct path.
> 
> Signed-off-by: Jan Blunck <jblunck@...e.de>
> Signed-off-by: Valerie Aurora <vaurora@...hat.com>
> ---
>  fs/namei.c |   82 +++++++++++++++++++++++++++++++++++++----------------------
>  1 files changed, 51 insertions(+), 31 deletions(-)
> 
> diff --git a/fs/namei.c b/fs/namei.c
> index 9c9ecfa..a338496 100644
> --- a/fs/namei.c
> +++ b/fs/namei.c
> @@ -462,10 +462,11 @@ ok:
>   * make sure that nobody added the entry to the dcache in the meantime..
>   * SMP-safe
>   */
> -static struct dentry * real_lookup(struct dentry * parent, struct qstr * name, struct nameidata *nd)
> +static int real_lookup(struct nameidata *nd, struct qstr *name,
> +		       struct path *path)
>  {

Same comments I had on patch 3:

- document in comment and patch header the new @path parameter, who is
  responsible for it, new return err, etc.

- consider adding BUG_ON(!path)

- perhaps VFS this should also be pushed upstream before UM

Erez.
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