linux-kernel - Re: [PATCH v4 27/30] fs: Add iput() cleanup helper

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Message-ID: <20250113164541.GY1977892@ZenIV>
Date: Mon, 13 Jan 2025 16:45:41 +0000
From: Al Viro <viro@...iv.linux.org.uk>
To: Mickaël Salaün <mic@...ikod.net>
Cc: Christian Brauner <brauner@...nel.org>,
	Jeff Layton <jlayton@...nel.org>,
	Josef Bacik <josef@...icpanda.com>, Eric Paris <eparis@...hat.com>,
	Paul Moore <paul@...l-moore.com>,
	Günther Noack <gnoack@...gle.com>,
	"Serge E . Hallyn" <serge@...lyn.com>,
	Ben Scarlato <akhna@...gle.com>,
	Casey Schaufler <casey@...aufler-ca.com>,
	Charles Zaffery <czaffery@...lox.com>,
	Daniel Burgener <dburgener@...ux.microsoft.com>,
	Francis Laniel <flaniel@...ux.microsoft.com>,
	James Morris <jmorris@...ei.org>, Jann Horn <jannh@...gle.com>,
	Jeff Xu <jeffxu@...gle.com>,
	Jorge Lucangeli Obes <jorgelo@...gle.com>,
	Kees Cook <kees@...nel.org>,
	Konstantin Meskhidze <konstantin.meskhidze@...wei.com>,
	Matt Bobrowski <mattbobrowski@...gle.com>,
	Mikhail Ivanov <ivanov.mikhail1@...wei-partners.com>,
	Phil Sutter <phil@....cc>,
	Praveen K Paladugu <prapal@...ux.microsoft.com>,
	Robert Salvet <robert.salvet@...lox.com>,
	Shervin Oloumi <enlightened@...gle.com>, Song Liu <song@...nel.org>,
	Tahera Fahimi <fahimitahera@...il.com>,
	Tyler Hicks <code@...icks.com>, audit@...r.kernel.org,
	linux-kernel@...r.kernel.org, linux-security-module@...r.kernel.org,
	linux-fsdevel@...r.kernel.org
Subject: Re: [PATCH v4 27/30] fs: Add iput() cleanup helper

On Mon, Jan 13, 2025 at 12:15:05PM +0100, Mickaël Salaün wrote:
> Al, Christian, this standalone patch could be useful to others.  Feel
> free to pick it in your tree.

Bad idea - we'll end up having to treat uses of that as a serious red flag;
it's too easy to end up with lifetime extended too far.