Kill CL_PROPAGATION, sanitize fs/pnode.c:get_source()

First of all, get_source() never results in CL_PROPAGATION
alone.  We either get CL_MAKE_SHARED (for the continuation
of peer group) or CL_SLAVE (slave that is not shared) or both
(beginning of peer group among slaves).  Massage the code to
make that explicit, kill CL_PROPAGATION test in clone_mnt()
(nothing sets CL_MAKE_SHARED without CL_PROPAGATION and in
clone_mnt() we are checking CL_PROPAGATION after we'd found
that there's no CL_SLAVE, so the check for CL_MAKE_SHARED
would do just as well).

Fix comments, while we are at it...

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>

1 files changed, 1 insertions, 1 deletions

diff --git a/fs/namespace.c b/fs/namespace.c
index c768f733c8d6..25c1dcf9e9eb 100644
--- a/fs/namespace.c
+++ b/fs/namespace.c
@@ -573,7 +573,7 @@ static struct vfsmount *clone_mnt(struct vfsmount *old, struct dentry *root,
                         mnt->mnt_master = old;
                         CLEAR_MNT_SHARED(mnt);
                 } else if (!(flag & CL_PRIVATE)) {
-                        if ((flag & CL_PROPAGATION) || IS_MNT_SHARED(old))
+                        if ((flag & CL_MAKE_SHARED) || IS_MNT_SHARED(old))
                                 list_add(&mnt->mnt_share, &old->mnt_share);
                         if (IS_MNT_SLAVE(old))
                                 list_add(&mnt->mnt_slave, &old->mnt_slave);