linux-kernel - Re: IB/core: Fine-tuning for ib_is_udata

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Date:   Mon, 22 Aug 2016 11:46:55 +0200
From:   Yann Droneaud <ydroneaud@...eya.com>
To:     SF Markus Elfring <elfring@...rs.sourceforge.net>,
        Joe Perches <joe@...ches.com>
Cc:     linux-rdma@...r.kernel.org, Doug Ledford <dledford@...hat.com>,
        Hal Rosenstock <hal.rosenstock@...il.com>,
        Sean Hefty <sean.hefty@...el.com>,
        LKML <linux-kernel@...r.kernel.org>,
        kernel-janitors@...r.kernel.org,
        Julia Lawall <julia.lawall@...6.fr>
Subject: Re: IB/core: Fine-tuning for ib_is_udata_cleared()

Hi,

Le dimanche 21 août 2016 à 22:15 +0200, SF Markus Elfring a écrit :
> > 
> > > 
> > > > 
> > > > Don't introduce a defect in patch 1 and correct
> > > > that introduced defect in patch 2.
> > > Which detail do you not like here?
> > 
> > See above.
> 
> This feedback is not clearer.
> 

It's clear enough: your second patch fixes an issue you introduced in
your first patch by removing the code which made use of the ret
initialization value:

-       if (copy_from_user(buf, p, len))
-               goto free;

> I find that the two update steps should work in principle,
> shouldn't they?
> 

It would be better to squash them here.

Regards.

-- 
Yann Droneaud
OPTEYA