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Date: Fri, 15 Sep 2023 16:40:06 +0200
From: Christian Brauner <brauner@kernel.org>
To: Al Viro <viro@zeniv.linux.org.uk>
Cc: Jan Kara <jack@suse.cz>, Christoph Hellwig <hch@lst.de>,
	Heiko Carstens <hca@linux.ibm.com>,
	Vasily Gorbik <gor@linux.ibm.com>,
	Alexander Gordeev <agordeev@linux.ibm.com>,
	Fenghua Yu <fenghua.yu@intel.com>,
	Reinette Chatre <reinette.chatre@intel.com>,
	Miquel Raynal <miquel.raynal@bootlin.com>,
	Richard Weinberger <richard@nod.at>,
	Vignesh Raghavendra <vigneshr@ti.com>,
	Dennis Dalessandro <dennis.dalessandro@cornelisnetworks.com>,
	Tejun Heo <tj@kernel.org>,
	Trond Myklebust <trond.myklebust@hammerspace.com>,
	Anna Schumaker <anna@kernel.org>, Kees Cook <keescook@chromium.org>,
	Damien Le Moal <dlemoal@kernel.org>,
	Naohiro Aota <naohiro.aota@wdc.com>,
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	linux-nfs@vger.kernel.org, linux-hardening@vger.kernel.org,
	cgroups@vger.kernel.org
Subject: Re: [PATCH 03/19] fs: release anon dev_t in deactivate_locked_super
Message-ID: <20230915-brust-gratis-156b7572a7c9@brauner>
References: <20230913111013.77623-1-hch@lst.de>
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 <20230915-elstern-etatplanung-906c6780af19@brauner>
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In-Reply-To: <20230915142814.GL800259@ZenIV>

> Lifetime rules for fs-private parts of superblock are really private to

Fine, I'll drop that. It's still correct that a filesystem needs to take
care when it frees sb->s_fs_info. See the RCU fun you just encountered.