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From:   Richard Weinberger <richard@nod.at>
To:     linux-nfs@vger.kernel.org
Cc:     linux-kernel@vger.kernel.org, linux-fsdevel@vger.kernel.org,
        jlayton@kernel.org, chuck.lever@oracle.com, anna@kernel.org,
        trond.myklebust@hammerspace.com, viro@zeniv.linux.org.uk,
        raven@themaw.net, chris.chilvers@appsbroker.com,
        david.young@appsbroker.com, luis.turcitu@appsbroker.com,
        david@sigma-star.at, Richard Weinberger <richard@nod.at>
Subject: [PATCH 2/3] fs: namei: Allow follow_down() to uncover auto mounts
Date:   Thu, 17 Nov 2022 20:11:50 +0100
Message-Id: <20221117191151.14262-3-richard@nod.at>
In-Reply-To: <20221117191151.14262-1-richard@nod.at>
References: <20221117191151.14262-1-richard@nod.at>
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This function is only used by NFSD to cross mount points.
If a mount point is of type auto mount, follow_down() will
not uncover it. Add LOOKUP_AUTOMOUNT to the lookup flags
to have ->d_automount() called when NFSD walks down the
mount tree.

Signed-off-by: Richard Weinberger <richard@nod.at>
---
 fs/namei.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/fs/namei.c b/fs/namei.c
index 578c2110df02..000c4b84e6be 100644
--- a/fs/namei.c
+++ b/fs/namei.c
@@ -1462,7 +1462,7 @@ int follow_down(struct path *path)
 {
 	struct vfsmount *mnt =3D path->mnt;
 	bool jumped;
-	int ret =3D traverse_mounts(path, &jumped, NULL, 0);
+	int ret =3D traverse_mounts(path, &jumped, NULL, LOOKUP_AUTOMOUNT);
=20
 	if (path->mnt !=3D mnt)
 		mntput(mnt);
--=20
2.26.2