linux-kernel - Re: [PATCH v2] fs: xattr: rewrite simple_xattr

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Date:	Wed, 31 Oct 2012 14:11:04 -0700
From:	Tejun Heo <tj@...nel.org>
To:	Aristeu Rozanski <aris@...hat.com>
Cc:	linux-kernel@...r.kernel.org, Li Zefan <lizefan@...wei.com>,
	Al Viro <viro@...iv.linux.org.uk>,
	linux-fsdevel@...r.kernel.org, Hugh Dickins <hughd@...gle.com>
Subject: Re: [PATCH v2] fs: xattr: rewrite simple_xattr_set()

Hello, sorry about the delay.

Just one nitpick.

On Thu, Oct 25, 2012 at 02:30:18PM -0400, Aristeu Rozanski wrote:
> +static int __simple_xattr_remove(struct simple_xattrs *xattrs,
> +				 const char *name)
> +{
> +	struct simple_xattr *xattr;
> +
> +	xattr = __find_xattr(xattrs, name);
>  	if (xattr) {
> +		list_del(&xattr->list);
>  		kfree(xattr->name);
>  		kfree(xattr);
> +		return 0;
>  	}
> -	return err;
>  
> +	return -ENODATA;
> +}
> +
> +/*
> + * xattr REMOVE operation for in-memory/pseudo filesystems
> + */
> +int simple_xattr_remove(struct simple_xattrs *xattrs, const char *name)
> +{
> +	int rc;
> +
> +	spin_lock(&xattrs->lock);
> +	rc = __simple_xattr_remove(xattrs, name);
> +	spin_unlock(&xattrs->lock);
> +
> +	return rc;

Do we need these two functions?  Can't you either collapse
__simple_xttar_remove() into simple_xattr_remove() or just call
__simple_xattr_remove() directly from simple_xattr_set() with locking
handled there?  Also, why doesn't simple_xattr_remove() have static?

Thanks.

-- 
tejun
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