linux-kernel - Re: [PATCH 1/2] iov_iter: iterate_folioq: fix handling of offset >= folio size

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Message-ID: <aJyYp-3VA9kJ5YMd@smile.fi.intel.com>
Date: Wed, 13 Aug 2025 16:52:39 +0300
From: Andy Shevchenko <andriy.shevchenko@...el.com>
To: Dominique Martinet <asmadeus@...ewreck.org>
Cc: Nathan Chancellor <nathan@...nel.org>,
	kernel test robot <lkp@...el.com>,
	Dominique Martinet via B4 Relay <devnull+asmadeus.codewreck.org@...nel.org>,
	"Matthew Wilcox (Oracle)" <willy@...radead.org>,
	Christian Brauner <brauner@...nel.org>,
	David Howells <dhowells@...hat.com>,
	Alexander Viro <viro@...iv.linux.org.uk>,
	Andrew Morton <akpm@...ux-foundation.org>, llvm@...ts.linux.dev,
	oe-kbuild-all@...ts.linux.dev,
	Linux Memory Management List <linux-mm@...ck.org>,
	Maximilian Bosch <maximilian@...sch.me>,
	Ryan Lahfa <ryan@...fa.xyz>, Christian Theune <ct@...ingcircus.io>,
	Arnout Engelen <arnout@...t.net>, linux-kernel@...r.kernel.org,
	linux-block@...r.kernel.org, linux-fsdevel@...r.kernel.org,
	stable@...r.kernel.org
Subject: Re: [PATCH 1/2] iov_iter: iterate_folioq: fix handling of offset >=
 folio size

On Wed, Aug 13, 2025 at 10:45:33PM +0900, Dominique Martinet wrote:
> Andy Shevchenko wrote on Wed, Aug 13, 2025 at 03:39:09PM +0200:
> > > I assume Andrew will pick it up eventually?
> > 
> > I hope this to happen sooner as it broke my builds too (I always do now `make W=1`
> > and suggest all developers should follow).
> 
> I actually test with W=1 too, but somehow this warning doesn't show up
> in my build, I'm not quite sure why :/
> (even if I try clang like the test robot... But there's plenty of
> other warnings all around everywhere else, so I agree this is all way
> too manual)

Depends on your config, last few releases I was specifically targetting x86
defconfigs (32- and 64-bit) to be build with `make W=1`. There are a couple of
changes that are still pending, but otherwise it builds with GCC and clang.

-- 
With Best Regards,
Andy Shevchenko