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Date:   Sat, 9 Apr 2022 03:08:22 +0300
From:   Vladimir Oltean <olteanv@...il.com>
To:     Jakob Koschel <jakobkoschel@...il.com>
Cc:     Jakub Kicinski <kuba@...nel.org>,
        "David S. Miller" <davem@...emloft.net>,
        Paolo Abeni <pabeni@...hat.com>, Andrew Lunn <andrew@...n.ch>,
        Vivien Didelot <vivien.didelot@...il.com>,
        Florian Fainelli <f.fainelli@...il.com>,
        Lars Povlsen <lars.povlsen@...rochip.com>,
        Steen Hegelund <Steen.Hegelund@...rochip.com>,
        UNGLinuxDriver@...rochip.com, Ariel Elior <aelior@...vell.com>,
        Manish Chopra <manishc@...vell.com>,
        Edward Cree <ecree.xilinx@...il.com>,
        Martin Habets <habetsm.xilinx@...il.com>,
        Michael Ellerman <mpe@...erman.id.au>,
        Benjamin Herrenschmidt <benh@...nel.crashing.org>,
        Paul Mackerras <paulus@...ba.org>,
        Jiri Pirko <jiri@...nulli.us>,
        Casper Andersson <casper.casan@...il.com>,
        Bjarni Jonasson <bjarni.jonasson@...rochip.com>,
        Colin Ian King <colin.king@...el.com>,
        Michael Walle <michael@...le.cc>,
        Christophe JAILLET <christophe.jaillet@...adoo.fr>,
        Arnd Bergmann <arnd@...db.de>,
        Eric Dumazet <edumazet@...gle.com>,
        Di Zhu <zhudi21@...wei.com>, Xu Wang <vulab@...as.ac.cn>,
        netdev@...r.kernel.org, linux-kernel@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org,
        linuxppc-dev@...ts.ozlabs.org, Mike Rapoport <rppt@...nel.org>,
        Brian Johannesmeyer <bjohannesmeyer@...il.com>,
        Cristiano Giuffrida <c.giuffrida@...nl>,
        "Bos, H.J." <h.j.bos@...nl>
Subject: Re: [PATCH net-next 02/15] net: dsa: sja1105: Remove usage of
 iterator for list_add() after loop

On Sat, Apr 09, 2022 at 01:58:29AM +0200, Jakob Koschel wrote:
> Hello Jakub,
> > Also the list_add() could be converted to list_add_tail().
> 
> Good point, I wasn't sure if that's considered as something that should be
> done as a separate change. I'm happy to include it in v2.

By now you probably studied more list access patterns than I did,
but I wrote that deliberately using list_add(..., pos->prev) rather than
list_add_tail(), because even though the code is the same, I tend to
think of the "head" argument of list_add_tail() as being the actual head
of the list, and therefore the head->prev being the tail of the list
(hence the name), something which doesn't hold true here where we're
inserting in the middle of the list. Anyway it's just a name and that's
what felt natural to me at the time, I won't oppose the change, but do
make it a separate change and not clump it together with the unrelated
list_for_each_entry() -> list_for_each() change.

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