netdev - linux-next: manual merge of the tip tree with the net-next tree

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Date:	Mon, 5 May 2014 14:29:34 +1000
From:	Stephen Rothwell <sfr@...b.auug.org.au>
To:	Thomas Gleixner <tglx@...utronix.de>, Ingo Molnar <mingo@...e.hu>,
	"H. Peter Anvin" <hpa@...or.com>,
	Peter Zijlstra <peterz@...radead.org>,
	David Miller <davem@...emloft.net>, <netdev@...r.kernel.org>
Cc:	linux-next@...r.kernel.org, linux-kernel@...r.kernel.org,
	Eric Dumazet <edumazet@...gle.com>,
	Neal Cardwell <ncardwell@...gle.com>,
	Yuchung Cheng <ycheng@...gle.com>
Subject: linux-next: manual merge of the tip tree with the net-next tree

Hi all,

Today's linux-next merge of the tip tree got a conflict in
net/ipv4/tcp_output.c between commit e114a710aa50 ("tcp: fix cwnd limited
checking to improve congestion control") from the  tree and commit
4e857c58efeb ("arch: Mass conversion of smp_mb__*()") from the tip tree.

I fixed it up (see below) and can carry the fix as necessary (no action
is required).

-- 
Cheers,
Stephen Rothwell                    sfr@...b.auug.org.au

diff --cc net/ipv4/tcp_output.c
index 694711a140d4,366cf06587b8..000000000000
--- a/net/ipv4/tcp_output.c
+++ b/net/ipv4/tcp_output.c
@@@ -1946,18 -1930,10 +1946,16 @@@ static bool tcp_write_xmit(struct sock 
  			/* It is possible TX completion already happened
  			 * before we set TSQ_THROTTLED, so we must
  			 * test again the condition.
- 			 * We abuse smp_mb__after_clear_bit() because
- 			 * there is no smp_mb__after_set_bit() yet
  			 */
- 			smp_mb__after_clear_bit();
+ 			smp_mb__after_atomic();
 -			if (atomic_read(&sk->sk_wmem_alloc) > limit)
 +			if (atomic_read(&sk->sk_wmem_alloc) > limit) {
 +				u32 unsent_bytes;
 +
 +compute_unsent_segs:
 +				unsent_bytes = tp->write_seq - tp->snd_nxt;
 +				unsent_segs = DIV_ROUND_UP(unsent_bytes, mss_now);
  				break;
 +			}
  		}
  
  		limit = mss_now;

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