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From: Dominique Martinet <asmadeus@codewreck.org>
To: Andy Shevchenko <andriy.shevchenko@intel.com>,
	"Paul E. McKenney" <paulmck@kernel.org>
Cc: Nathan Chancellor <nathan@kernel.org>,
	kernel test robot <lkp@intel.com>,
	Dominique Martinet via B4 Relay
	<devnull+asmadeus.codewreck.org@kernel.org>,
	"Matthew Wilcox (Oracle)" <willy@infradead.org>,
	Christian Brauner <brauner@kernel.org>,
	David Howells <dhowells@redhat.com>,
	Alexander Viro <viro@zeniv.linux.org.uk>,
	Andrew Morton <akpm@linux-foundation.org>,
	llvm@lists.linux.dev, oe-kbuild-all@lists.linux.dev,
	Linux Memory Management List <linux-mm@kvack.org>,
	Maximilian Bosch <maximilian@mbosch.me>,
	Ryan Lahfa <ryan@lahfa.xyz>,
	Christian Theune <ct@flyingcircus.io>,
	Arnout Engelen <arnout@bzzt.net>,
	linux-kernel@vger.kernel.org, linux-block@vger.kernel.org,
	linux-fsdevel@vger.kernel.org, stable@vger.kernel.org
Subject: Re: [PATCH 1/2] iov_iter: iterate_folioq: fix handling of offset >= folio size
Date: Thu, 14 Aug 2025 10:14:34 +0900	[thread overview]
Message-ID: <aJ04ej2P3ZXiBjOG@codewreck.org> (raw)
In-Reply-To: <f389ac0d-de77-4443-9302-3d8895e39daf@paulmck-laptop> <aJyYp-3VA9kJ5YMd@smile.fi.intel.com>

Andy Shevchenko wrote on Wed, Aug 13, 2025 at 04:52:39PM +0300:
> > 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.

I meant it the other way around: the warning isn't showing up on master
+ these patches for my config.

But now I double-checked, 'CC=clang make W=1' doesn't actually use
clang, I should have tried 'make CC=clang W=1'...
And, yeah, it just doesn't show up with gcc so I'll know it's better to
check both compilers...

Paul E. McKenney wrote on Wed, Aug 13, 2025 at 04:04:19PM -0700:
> > 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).
> 
> This build failure is showing up in my testing as well.
> 
> In the service of preventing bisection issues, would it be possible to
> fold the fix into the original patch?

Andrew just picked v3 up, so there won't be any such problem, and -next
will stop failing after today's update

-- 
Dominique Martinet | Asmadeus

  reply	other threads:[~2025-08-14  1:15 UTC|newest]

Thread overview: 18+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2025-08-11  7:39 [PATCH 0/2] iterate_folioq bug when offset==size (Was: [REGRESSION] 9pfs issues on 6.12-rc1) Dominique Martinet via B4 Relay
2025-08-11  7:39 ` [PATCH 1/2] iov_iter: iterate_folioq: fix handling of offset >= folio size Dominique Martinet via B4 Relay
2025-08-11 18:55   ` kernel test robot
2025-08-13  5:16     ` Nathan Chancellor
2025-08-13  5:34       ` Dominique Martinet
2025-08-13 13:39         ` Andy Shevchenko
2025-08-13 13:45           ` Dominique Martinet
2025-08-13 13:52             ` Andy Shevchenko
2025-08-14  1:14               ` Dominique Martinet [this message]
2025-08-13 23:04           ` Paul E. McKenney
2025-08-13 13:49       ` David Howells
2025-08-11  7:39 ` [PATCH 2/2] iov_iter: iov_folioq_get_pages: don't leave empty slot behind Dominique Martinet via B4 Relay
2025-08-11 13:13   ` Arnout Engelen
2025-08-11 14:37 ` [PATCH 1/2] iov_iter: iterate_folioq: fix handling of offset >= folio size David Howells
2025-08-11 21:37   ` asmadeus
2025-08-12  9:34   ` David Howells
2025-08-12 21:13     ` asmadeus
2025-08-11 14:38 ` [PATCH 2/2] iov_iter: iov_folioq_get_pages: don't leave empty slot behind David Howells

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