linux-kernel - Re: [PATCH v1 1/1] dm table: Fix W=1 build warning when mempool_needs

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Message-ID: <a0b1fcbf-9cda-9da2-ecbe-ac5cbc75b775@redhat.com>
Date: Mon, 14 Apr 2025 14:13:18 +0200 (CEST)
From: Mikulas Patocka <mpatocka@...hat.com>
To: Andy Shevchenko <andriy.shevchenko@...ux.intel.com>
cc: Jens Axboe <axboe@...nel.dk>, dm-devel@...ts.linux.dev, 
    linux-kernel@...r.kernel.org, llvm@...ts.linux.dev, 
    Alasdair Kergon <agk@...hat.com>, Mike Snitzer <snitzer@...nel.org>, 
    Nathan Chancellor <nathan@...nel.org>, 
    Nick Desaulniers <nick.desaulniers+lkml@...il.com>, 
    Bill Wendling <morbo@...gle.com>, Justin Stitt <justinstitt@...gle.com>
Subject: Re: [PATCH v1 1/1] dm table: Fix W=1 build warning when
 mempool_needs_integrity is unused



On Mon, 14 Apr 2025, Andy Shevchenko wrote:

> On Mon, Apr 14, 2025 at 01:04:49PM +0300, Andy Shevchenko wrote:
> > On Mon, Apr 07, 2025 at 10:21:26AM +0300, Andy Shevchenko wrote:
> > > The mempool_needs_integrity is unused. This, in particular, prevents
> > > kernel builds with Clang, `make W=1` and CONFIG_WERROR=y:
> > > 
> > > drivers/md/dm-table.c:1052:7: error: variable 'mempool_needs_integrity' set but not used [-Werror,-Wunused-but-set-variable]
> > >  1052 |         bool mempool_needs_integrity = t->integrity_supported;
> > >       |              ^
> > > 
> > > Fix this by removing the leftover.
> > 
> > This issue is still present in v6.15-rc1.
> 
> I meant v6.15-rc2, of course.
> 
> -- 
> With Best Regards,
> Andy Shevchenko

I will send it to Linus (maybe with other changes) before 6.15 comes out.

Mikulas