linux-kernel - Re: [EXTERNAL] Re: [PATCH 4.19 013/247] cifs: Set CIFS_MOUNT_USE_PREFIX_PATH flag on setting cifs

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Message-ID: <878s5e9x8s.fsf@cjr.nz>
Date:   Mon, 19 Apr 2021 11:15:15 -0300
From:   Paulo Alcantara <pc@....nz>
To:     Salvatore Bonaccorso <carnil@...ian.org>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>
Cc:     Shyam Prasad <Shyam.Prasad@...rosoft.com>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        "stable@...r.kernel.org" <stable@...r.kernel.org>,
        Aurelien Aptel <aaptel@...e.com>,
        Steven French <Steven.French@...rosoft.com>,
        Sasha Levin <sashal@...nel.org>
Subject: Re: [EXTERNAL] Re: [PATCH 4.19 013/247] cifs: Set
 CIFS_MOUNT_USE_PREFIX_PATH flag on setting cifs_sb->prepath.

Salvatore Bonaccorso <carnil@...ian.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.