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From: Andrew Lunn <andrew@lunn.ch>
To: The list for a Better Approach To Mobile Ad-hoc Networking
	<b.a.t.m.a.n@lists.open-mesh.net>
Subject: Re: [B.A.T.M.A.N.] [PATCHv2 no pgp] batman-adv: receive packets	directly using skbs
Date: Thu, 31 Dec 2009 12:17:55 +0100	[thread overview]
Message-ID: <20091231111755.GA1884@lunn.ch> (raw)
In-Reply-To: <20091229154328.GA17851@WGT634U>

> I try to summarize where each lock is used so we can decide if it is ok to
> revert some of them to spin_lock again. This should also resolve a request I
> got from Andrew some time ago.

Hi Sven

Thanks for this.

[...]

> So it is complete correct to use irqsave everywhere (as you have commited it
> now).

This also means we don't need to worry about the order we take
spinlocks in resulting in deadlocks. Since we disable interrupts, it
is not possible for some other thread to be holding a lock we need.

   Andrew

      reply	other threads:[~2009-12-31 11:17 UTC|newest]

Thread overview: 5+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2009-12-27 17:23 [B.A.T.M.A.N.] [PATCHv2] batman-adv: receive packets directly using skbs Simon Wunderlich
2009-12-28 15:10 ` [B.A.T.M.A.N.] [PATCHv2 no pgp] " Simon Wunderlich
2009-12-29 15:05   ` Simon Wunderlich
2009-12-29 15:43   ` Sven Eckelmann
2009-12-31 11:17     ` Andrew Lunn [this message]

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