netdev - Re: [PATCH for-next 0/8] Add Mellanox mlx5 driver for Connect-IB devices

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Message-ID: <CAJZOPZJLSTaTwp7EBE2OLCpnWZTyEsUF84X0aw9XEzTFN-fW+A@mail.gmail.com>
Date:	Wed, 3 Jul 2013 23:25:11 +0300
From:	Or Gerlitz <or.gerlitz@...il.com>
To:	Roland Dreier <roland@...nel.org>
Cc:	Or Gerlitz <ogerlitz@...lanox.com>,
	Eli Cohen <eli@....mellanox.co.il>,
	"linux-rdma@...r.kernel.org" <linux-rdma@...r.kernel.org>,
	Eli Cohen <eli@...lanox.com>,
	"netdev@...r.kernel.org" <netdev@...r.kernel.org>,
	Jack Morgenstein <jackm@....mellanox.co.il>
Subject: Re: [PATCH for-next 0/8] Add Mellanox mlx5 driver for Connect-IB devices

On Wed, Jul 3, 2013 at 10:26 PM, Roland Dreier <roland@...nel.org> wrote:
> On Wed, Jul 3, 2013 at 9:41 AM, Or Gerlitz <ogerlitz@...lanox.com> wrote:
> > Jack looked on this comment/code and he says that the active flag is used
> > to prevent re-scheduling the timer from inside the timer handling routine.
> >
> > In the kernel, the comment header in the source file for del_timer_sync
> > explicitly states that re-scheduling the timer must be prevented,
> > or the sync is useless:Callers must prevent restarting of the timer,
> > otherwise
> > this function is meaningless
> >
> > So we believe that code should remain.
>
> Look at the actual timer code.  del_timer_sync() won't work if
> something unrelated re-adds the timer, but it will work if the timer
> itself is what re-adds itself.

[...]

OK, we will re-look into that tomorrow. So how V2 looks?

Or.
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