linux-kernel - Re: [Patch] Scm: Remove unnecessary pid & credential references in Unix socket's send and receive path

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Message-Id: <20110822.174013.353730308624819543.davem@davemloft.net>
Date:	Mon, 22 Aug 2011 17:40:13 -0700 (PDT)
From:	David Miller <davem@...emloft.net>
To:	tim.c.chen@...ux.intel.com
Cc:	eric.dumazet@...il.com, viro@...iv.linux.org.uk,
	ebiederm@...ssion.com, ak@...ux.intel.com,
	matt.fleming@...ux.intel.com, linux-kernel@...r.kernel.org,
	netdev@...r.kernel.org
Subject: Re: [Patch] Scm: Remove unnecessary pid & credential references in
 Unix socket's send and receive path

From: Tim Chen <tim.c.chen@...ux.intel.com>
Date: Fri, 19 Aug 2011 09:44:58 -0700

> -		/* Only send the fds in the first buffer */
> -		err = unix_scm_to_skb(siocb->scm, skb, !fds_sent);
> +		/* Only send the fds and no ref to pid in the first buffer */
> +		if (fds_sent)
> +			err = unix_scm_to_skb(siocb->scm, skb, !fds_sent, true);
> +		else
> +			err = unix_scm_to_skb(siocb->scm, skb, !fds_sent, false);

Just set this final boolean the way the third argument is, there is no
reason to replicate the entire function call twice just to set the
final argument to what "fds_sent" evaluates to as a boolean.

		err = unix_scm_to_skb(siocb->scm, skb, !fds_sent, fds_sent);

ought to suffice.
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