linux-kernel - Re: [PATCH 0/4] char-TPM: Adjustments for ten function implementations

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Date:   Thu, 19 Oct 2017 09:16:11 -0400
From:   Mimi Zohar <zohar@...ux.vnet.ibm.com>
To:     Michael Ellerman <mpe@...erman.id.au>,
        Julia Lawall <julia.lawall@...6.fr>,
        Dan Carpenter <dan.carpenter@...cle.com>
Cc:     Jarkko Sakkinen <jarkko.sakkinen@...ux.intel.com>,
        SF Markus Elfring <elfring@...rs.sourceforge.net>,
        linux-integrity@...r.kernel.org, linuxppc-dev@...ts.ozlabs.org,
        Andy Shevchenko <andriy.shevchenko@...ux.intel.com>,
        Benjamin Herrenschmidt <benh@...nel.crashing.org>,
        Corentin Labbe <clabbe.montjoie@...il.com>,
        Jason Gunthorpe <jgunthorpe@...idianresearch.com>,
        Jerry Snitselaar <jsnitsel@...hat.com>,
        Kenneth Goldman <kgold@...ux.vnet.ibm.com>,
        Nayna Jain <nayna@...ux.vnet.ibm.com>,
        Paul Mackerras <paulus@...ba.org>,
        Peter Hüwe <PeterHuewe@....de>,
        Stefan Berger <stefanb@...ux.vnet.ibm.com>,
        LKML <linux-kernel@...r.kernel.org>,
        kernel-janitors@...r.kernel.org
Subject: Re: [PATCH 0/4] char-TPM: Adjustments for ten function
 implementations

On Wed, 2017-10-18 at 14:18 +1100, Michael Ellerman wrote:
> Mimi Zohar <zohar@...ux.vnet.ibm.com> writes:
> > On Tue, 2017-10-17 at 12:11 +0200, Julia Lawall wrote:
> >> On Tue, 17 Oct 2017, Dan Carpenter wrote:
> >> > On Tue, Oct 17, 2017 at 10:56:42AM +0200, Julia Lawall wrote:
> >> > > On Tue, 17 Oct 2017, Dan Carpenter wrote:
> >> > > > On Mon, Oct 16, 2017 at 09:35:12PM +0300, Jarkko Sakkinen wrote:
> >> > > > >
> >> > > > > A minor complaint: all commits are missing "Fixes:" tag.
> >> > > > >
> >> > > >
> >> > > > Fixes is only for bug fixes.  These don't fix any bugs.
> >> > >
> >> > > 0-day seems to put Fixes for everything.  Should they be removed when the
> >> > > old code is undesirable but doesn't actually cause a crash, eg out of date
> >> > > API.
> >> >
> >> > Yeah, I feel like Fixes tags don't belong for API updates and cleanups.
> >> 
> >> OK, I will remove them from the patches that go through me where they
> >> don't seem appropriate.
> >
> > The "Fixes" tag is an indication that the patch should be backported.
> 
> No it's not that strong. It's an indication that the patch fixes another
> commit, which may or may not mean it should be backported depending on
> the preferences of the backporter. If it *does* need backporting then
> the Fixes tag helps identify where it should go.

Thank you for setting the record straight.

> The doco is actually pretty well worded IMO:
> 
>   https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/tree/Documentation/process/submitting-patches.rst#n183
> 
>   If your patch fixes a bug in a specific commit, e.g. you found an issue using
>   ``git bisect``, please use the 'Fixes:' tag with the first 12 characters of
>   the SHA-1 ID, and the one line summary.
> 
> and:
> 
>   https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/tree/Documentation/process/submitting-patches.rst#n602
> 
>   A Fixes: tag indicates that the patch fixes an issue in a previous commit. It
>   is used to make it easy to determine where a bug originated, which can help
>   review a bug fix. This tag also assists the stable kernel team in determining
>   which stable kernel versions should receive your fix. This is the preferred
>   method for indicating a bug fixed by the patch. See :ref:`describe_changes`
>   for more details.
> 
> 
> cheers
>