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From:   Paulo Alcantara <pc@cjr.nz>
To:     Salvatore Bonaccorso <carnil@debian.org>,
        Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc:     Shyam Prasad <Shyam.Prasad@microsoft.com>,
        "linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
        "stable@vger.kernel.org" <stable@vger.kernel.org>,
        Aurelien Aptel <aaptel@suse.com>,
        Steven French <Steven.French@microsoft.com>,
        Sasha Levin <sashal@kernel.org>
Subject: Re: [EXTERNAL] Re: [PATCH 4.19 013/247] cifs: Set
 CIFS_MOUNT_USE_PREFIX_PATH flag on setting cifs_sb->prepath.
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References: <20210301161031.684018251@linuxfoundation.org>
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 <YHP+XbVWfGv21EL1@kroah.com> <YHwo5prs4MbXEzER@eldamar.lan>
Date:   Mon, 19 Apr 2021 11:15:15 -0300
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Salvatore Bonaccorso <carnil@debian.org> writes:

> Thanks Greg! Shyam, Steven, now the commit was reverted for the older
> brnaches. But did you got a chance to find why it breaks for the older
> series?

That commit has revealed another bug in cifs_mount() where we failed to
update the super's prefix path after chasing DFS referrals.

Newer kernel versions do not have it because the code & logic in
cifs_mount() changed entirely.