linux-kernel - Re: [patch V2 14/29] dm bufio: Simplify stack trace retrieval

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Message-ID: <CAG_fn=WL0yLqavV_mhodT=B6KcAzJ+LS0hss1jqany9Cn92RHw@mail.gmail.com>
Date:   Thu, 18 Apr 2019 14:11:44 +0200
From:   Alexander Potapenko <glider@...gle.com>
To:     Thomas Gleixner <tglx@...utronix.de>
Cc:     LKML <linux-kernel@...r.kernel.org>,
        Josh Poimboeuf <jpoimboe@...hat.com>, x86@...nel.org,
        Andy Lutomirski <luto@...nel.org>,
        Steven Rostedt <rostedt@...dmis.org>, dm-devel@...hat.com,
        Mike Snitzer <snitzer@...hat.com>,
        Alasdair Kergon <agk@...hat.com>,
        Alexey Dobriyan <adobriyan@...il.com>,
        Andrew Morton <akpm@...ux-foundation.org>,
        Pekka Enberg <penberg@...nel.org>,
        Linux Memory Management List <linux-mm@...ck.org>,
        David Rientjes <rientjes@...gle.com>,
        Christoph Lameter <cl@...ux.com>,
        Catalin Marinas <catalin.marinas@....com>,
        Dmitry Vyukov <dvyukov@...gle.com>,
        Andrey Ryabinin <aryabinin@...tuozzo.com>,
        kasan-dev <kasan-dev@...glegroups.com>,
        Mike Rapoport <rppt@...ux.vnet.ibm.com>,
        Akinobu Mita <akinobu.mita@...il.com>,
        iommu@...ts.linux-foundation.org,
        Robin Murphy <robin.murphy@....com>,
        Christoph Hellwig <hch@....de>,
        Marek Szyprowski <m.szyprowski@...sung.com>,
        Johannes Thumshirn <jthumshirn@...e.de>,
        David Sterba <dsterba@...e.com>, Chris Mason <clm@...com>,
        Josef Bacik <josef@...icpanda.com>,
        linux-btrfs@...r.kernel.org, intel-gfx@...ts.freedesktop.org,
        Joonas Lahtinen <joonas.lahtinen@...ux.intel.com>,
        Maarten Lankhorst <maarten.lankhorst@...ux.intel.com>,
        dri-devel@...ts.freedesktop.org, David Airlie <airlied@...ux.ie>,
        Jani Nikula <jani.nikula@...ux.intel.com>,
        Daniel Vetter <daniel@...ll.ch>,
        Rodrigo Vivi <rodrigo.vivi@...el.com>,
        linux-arch@...r.kernel.org
Subject: Re: [patch V2 14/29] dm bufio: Simplify stack trace retrieval

On Thu, Apr 18, 2019 at 1:54 PM Thomas Gleixner <tglx@...utronix.de> wrote:
>
> On Thu, 18 Apr 2019, Alexander Potapenko wrote:
> > On Thu, Apr 18, 2019 at 11:06 AM Thomas Gleixner <tglx@...utronix.de> wrote:
> > > -       save_stack_trace(&b->stack_trace);
> > > +       b->stack_len = stack_trace_save(b->stack_entries, MAX_STACK, 2);
> > As noted in one of similar patches before, can we have an inline
> > comment to indicate what does this "2" stand for?
>
> Come on. We have gazillion of functions which take numerical constant
> arguments. Should we add comments to all of them?
Ok, sorry. I might not be familiar enough with the kernel style guide.
> Thanks,
>
>         tglx



-- 
Alexander Potapenko
Software Engineer

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