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Message-Id: <20121225.133753.1383155065923849678.davem@davemloft.net> Date: Tue, 25 Dec 2012 13:37:53 -0800 (PST) From: David Miller <davem@...emloft.net> To: akinobu.mita@...il.com Cc: ordex@...istici.org, linux-kernel@...r.kernel.org, akpm@...ux-foundation.org, lindner_marek@...oo.de, siwu@....tu-chemnitz.de, b.a.t.m.a.n@...ts.open-mesh.org, netdev@...r.kernel.org Subject: Re: [PATCH 19/29] batman-adv: fix random jitter calculation From: Akinobu Mita <akinobu.mita@...il.com> Date: Wed, 26 Dec 2012 06:35:37 +0900 > 2012/12/25 Antonio Quartulli <ordex@...istici.org>: >> On Mon, Dec 24, 2012 at 11:14:06AM +0900, Akinobu Mita wrote: >>> batadv_iv_ogm_emit_send_time() attempts to calculates a random integer >>> in the range of 'orig_interval +- BATADV_JITTER' by the below lines. >>> >>> msecs = atomic_read(&bat_priv->orig_interval) - BATADV_JITTER; >>> msecs += (random32() % 2 * BATADV_JITTER); >>> >>> But it actually gets 'orig_interval' or 'orig_interval - BATADV_JITTER' >>> because '%' and '*' have same precedence and associativity is >>> left-to-right. >>> >>> This adds the parentheses at the appropriate position so that it matches >>> original intension. >>> >>> Signed-off-by: Akinobu Mita <akinobu.mita@...il.com> >>> Cc: Marek Lindner <lindner_marek@...oo.de> >>> Cc: Simon Wunderlich <siwu@....tu-chemnitz.de> >>> Cc: Antonio Quartulli <ordex@...istici.org> >>> Cc: b.a.t.m.a.n@...ts.open-mesh.org >>> Cc: "David S. Miller" <davem@...emloft.net> >>> Cc: netdev@...r.kernel.org >>> --- >> >> Acked-by: Antonio Quartulli <ordex@...istici.org> >> >> But I would suggest to apply this change to net, since it is a fix. > > I agree. > David, please consider to apply this patch for 3.8-rc*. > All patches I should consider seriously should be properly reposted for review and inclusion. -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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