linux-kernel - Re: [PATCH v3 00/12] man2: document "new" mount API

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Message-ID: <198c74541c8.c835b65275081.1338200284666207736@zohomail.com>
Date: Wed, 20 Aug 2025 15:37:41 +0400
From: Askar Safin <safinaskar@...omail.com>
To: "Aleksa Sarai" <cyphar@...har.com>
Cc: "alx" <alx@...nel.org>, "brauner" <brauner@...nel.org>,
	"dhowells" <dhowells@...hat.com>,
	"g.branden.robinson" <g.branden.robinson@...il.com>,
	"jack" <jack@...e.cz>, "linux-api" <linux-api@...r.kernel.org>,
	"linux-fsdevel" <linux-fsdevel@...r.kernel.org>,
	"linux-kernel" <linux-kernel@...r.kernel.org>,
	"linux-man" <linux-man@...r.kernel.org>,
	"mtk.manpages" <mtk.manpages@...il.com>,
	"viro" <viro@...iv.linux.org.uk>, "Ian Kent" <raven@...maw.net>,
	"autofs mailing list" <autofs@...r.kernel.org>
Subject: Re: [PATCH v3 00/12] man2: document "new" mount API

 ---- On Sun, 17 Aug 2025 20:16:04 +0400  Aleksa Sarai <cyphar@...har.com> wrote --- 
 > They are not tested by fstests AFAICS, but that's more of a flaw in
 > fstests (automount requires you to have a running autofs daemon, which
 > probably makes testing it in fstests or selftests impractical) not the
 > feature itself.

I suggest testing automounts in fstests/selftests using "tracing" automount.
This is what I do in my reproducers.

 > The automount behaviour of tracefs is different to the general automount
 > mechanism which is managed by userspace with the autofs daemon.

Yes. But I still was able to write reproducers using "tracing", so this
automount point is totally okay for tests. (At least for some tests,
such as RESOLVE_NO_XDEV.)

--
Askar Safin
https://types.pl/@safinaskar