linux-kernel - Re: [PATCH net 0/8] net: stmmac: Fixes for -net

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Date:   Mon, 16 Dec 2019 12:21:06 -0800
From:   Jakub Kicinski <jakub.kicinski@...ronome.com>
To:     Jose Abreu <Jose.Abreu@...opsys.com>
Cc:     "netdev@...r.kernel.org" <netdev@...r.kernel.org>,
        Joao Pinto <Joao.Pinto@...opsys.com>,
        Giuseppe Cavallaro <peppe.cavallaro@...com>,
        Alexandre Torgue <alexandre.torgue@...com>,
        "David S. Miller" <davem@...emloft.net>,
        Maxime Coquelin <mcoquelin.stm32@...il.com>,
        "linux-stm32@...md-mailman.stormreply.com" 
        <linux-stm32@...md-mailman.stormreply.com>,
        "linux-arm-kernel@...ts.infradead.org" 
        <linux-arm-kernel@...ts.infradead.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH net 0/8] net: stmmac: Fixes for -net

On Mon, 16 Dec 2019 09:26:22 +0000, Jose Abreu wrote:
> From: Jakub Kicinski <jakub.kicinski@...ronome.com>
> Date: Dec/14/2019, 00:22:16 (UTC+00:00)
> 
> > On Tue, 10 Dec 2019 20:33:52 +0100, Jose Abreu wrote:  
> > > Fixes for stmmac.
> > > 
> > > 1) Fixes the filtering selftests (again) for cases when the number of multicast
> > > filters are not enough.
> > > 
> > > 2) Fixes SPH feature for MTU > default.
> > > 
> > > 3) Fixes the behavior of accepting invalid MTU values.
> > > 
> > > 4) Fixes FCS stripping for multi-descriptor packets.
> > > 
> > > 5) Fixes the change of RX buffer size in XGMAC.
> > > 
> > > 6) Fixes RX buffer size alignment.
> > > 
> > > 7) Fixes the 16KB buffer alignment.
> > > 
> > > 8) Fixes the enabling of 16KB buffer size feature.  
> > 
> > Hi Jose!
> > 
> > Patches directed at net should have a Fixes tag identifying the commit
> > which introduced the problem. The commit messages should also describe
> > user-visible outcomes of the bugs. Without those two its hard to judge
> > which patches are important for stable backports.
> > 
> > Could you please repost with appropriate Fixes tags?  
> 
> I agree with you Jakub but although these are bugs they are either for 
> recently introduced features (such as SPH and selftests), or for 
> features that are not commonly used. I can dig into the GIT history and 
> provide fixes tag for them all or I can always provide a backport fix if 
> any user requires so. Can you please comment on which one you prefer ?

I think Fixes tags helps either way, if the fix is not important enough
upstream maintainers should be able to figure that out based on the
commit message (or you can give advice on backporting below the ---
line, like "Probably not worth backporting").

For the recent features it's quite useful to see the fixes tag so both
humans and bots can immediately see its a recent feature and we don't
have to worry about backports.