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bh=daXjtGTfmlVfqWEsV/tKRDwuwZG19vc4O33UsaVuyC4=; b=PKJoiaAIeJUIezjpIUvwLfhLOU ljSMzyiy8niSruUOPj8Yhae/1tEMXXOfdDkBPWvk228fa+x3gT5ziOetsoIlPS6qPOcomc49/VYEg TXRw9lJUhkDbPABnmZAwnrgsKAmLUH7AQ4AnGZOBwiLlkTJITaGg5cRexxsqxsIPyy0pfvevgI10V EkVCPliHzrpbNBjpdQZtf8BtLMu9Kcsy7J4hQT6WtNuW7LYoAAzyuI/C3HY4Xp5Pm7lL1/zj5aQ3N KpLYJej9U/8afrfofjKQFQuivnbtyPIWzjnE64luVJY6SlrAo9HkNbF8Ew4ypXGp7RUjQj7TvDxC5 7aSVGjaw==; Received: from viro by zeniv.linux.org.uk with local (Exim 4.99.1 #2 (Red Hat Linux)) id 1vkxek-00000007aLd-3OJ0; Wed, 28 Jan 2026 04:59:54 +0000 Date: Wed, 28 Jan 2026 04:59:54 +0000 From: Al Viro To: Samuel Wu Cc: Greg KH , linux-fsdevel@vger.kernel.org, torvalds@linux-foundation.org, brauner@kernel.org, jack@suse.cz, raven@themaw.net, miklos@szeredi.hu, neil@brown.name, a.hindborg@kernel.org, linux-mm@kvack.org, linux-efi@vger.kernel.org, ocfs2-devel@lists.linux.dev, kees@kernel.org, rostedt@goodmis.org, linux-usb@vger.kernel.org, paul@paul-moore.com, casey@schaufler-ca.com, linuxppc-dev@lists.ozlabs.org, john.johansen@canonical.com, selinux@vger.kernel.org, borntraeger@linux.ibm.com, bpf@vger.kernel.org, clm@meta.com, android-kernel-team Subject: Re: [PATCH v4 00/54] tree-in-dcache stuff Message-ID: <20260128045954.GS3183987@ZenIV> References: <20251118051604.3868588-1-viro@zeniv.linux.org.uk> <2026012715-mantra-pope-9431@gregkh> X-Mailing-List: linuxppc-dev@lists.ozlabs.org List-Id: List-Help: List-Owner: List-Post: List-Archive: , List-Subscribe: , , List-Unsubscribe: Precedence: list MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: Sender: Al Viro On Tue, Jan 27, 2026 at 06:02:25PM -0800, Samuel Wu wrote: > Thanks for the suggestion. I tried a few different setups, and now I'm > fairly confident e5bf5ee26663 ("functionfs: fix the open/removal > races") is the culprit. I did have to revert 6ca67378d0e7 ("convert > functionfs") and c7747fafaba0 ("functionfs: switch to > simple_remove_by_name()") to successfully build, but reverting only > those two in isolation did not fix the issue. Very interesting... Does 1544775687f0 (parent of e5bf5ee26663) demonstrate that behaviour?