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Date:   Sat, 8 May 2021 19:13:02 +0000
From:   Al Viro <viro@zeniv.linux.org.uk>
To:     Linus Torvalds <torvalds@linux-foundation.org>
Cc:     Jia He <justin.he@arm.com>, Petr Mladek <pmladek@suse.com>,
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        Rasmus Villemoes <linux@rasmusvillemoes.dk>,
        Jonathan Corbet <corbet@lwn.net>,
        Al Viro <viro@ftp.linux.org.uk>,
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        Vasily Gorbik <gor@linux.ibm.com>,
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Subject: Re: [PATCH RFC 1/3] fs: introduce helper d_path_fast()
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On Sat, May 08, 2021 at 08:30:43AM -0700, Linus Torvalds wrote:

> In fact, I think it would clean up prepend_path() and make it more
> legible to have the two layers of mount_lock / rename_lock be done in
> callers with the restarting being done as a loop in the caller rather
> than as "goto restart_*".

Potentiallty delicate question is how to pass bptr/blen to the caller
of that helper...