vfs: and now we can make ->mnt_master point to struct mount

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

diff --git a/fs/mount.h b/fs/mount.h
index 7071d8fa9307e6874fcbb1fa03c0844598b84519..d4db4c7e1815a69b8faa07c069c68b253ed42993 100644 (file)
--- a/fs/mount.h
+++ b/fs/mount.h
@@ -20,7 +20,7 @@ struct mount {
        struct list_head mnt_mounts;    /* list of children, anchored here */
        struct list_head mnt_child;     /* and going through their mnt_child */
        /* yet to be moved - up to mnt_slave */
-       struct vfsmount *mnt_master;    /* slave is on master->mnt_slave_list */
+       struct mount *mnt_master;       /* slave is on master->mnt_slave_list */
 };
 
 static inline struct mount *real_mount(struct vfsmount *mnt)

diff --git a/fs/namespace.c b/fs/namespace.c
index 3439042fc9f2f95ed9eefa3dd3b41b168833e331..847b7240c512d7a6a4415769266e4341b7c006c8 100644 (file)
--- a/fs/namespace.c
+++ b/fs/namespace.c
@@ -715,7 +715,7 @@ static struct mount *clone_mnt(struct mount *old, struct dentry *root,
 
                if (flag & CL_SLAVE) {
                        list_add(&mnt->mnt.mnt_slave, &old->mnt.mnt_slave_list);
-                       mnt->mnt_master = &old->mnt;
+                       mnt->mnt_master = old;
                        CLEAR_MNT_SHARED(&mnt->mnt);
                } else if (!(flag & CL_PRIVATE)) {
                        if ((flag & CL_MAKE_SHARED) || IS_MNT_SHARED(&old->mnt))
@@ -1052,7 +1052,7 @@ static int show_mountinfo(struct seq_file *m, void *v)
        if (IS_MNT_SHARED(mnt))
                seq_printf(m, " shared:%i", mnt->mnt_group_id);
        if (IS_MNT_SLAVE(r)) {
-               int master = r->mnt_master->mnt_group_id;
+               int master = r->mnt_master->mnt.mnt_group_id;
                int dom = get_dominating_id(r, &p->root);
                seq_printf(m, " master:%i", master);
                if (dom && dom != master)

diff --git a/fs/pnode.c b/fs/pnode.c
index 3ac44d15fe58063e4b0fdda0aa07dacd7d2071ac..9bf22b61f8fbc5e7e9f71609abf980e961f45b8b 100644 (file)
--- a/fs/pnode.c
+++ b/fs/pnode.c
@@ -55,7 +55,7 @@ int get_dominating_id(struct mount *mnt, const struct path *root)
 {
        struct mount *m;
 
-       for (m = real_mount(mnt->mnt_master); m != NULL; m = real_mount(m->mnt_master)) {
+       for (m = mnt->mnt_master; m != NULL; m = m->mnt_master) {
                struct mount *d = get_peer_under_root(m, mnt->mnt.mnt_ns, root);
                if (d)
                        return d->mnt.mnt_group_id;
@@ -66,7 +66,7 @@ int get_dominating_id(struct mount *mnt, const struct path *root)
 
 static int do_make_slave(struct mount *mnt)
 {
-       struct mount *peer_mnt = mnt, *master = real_mount(mnt->mnt_master);
+       struct mount *peer_mnt = mnt, *master = mnt->mnt_master;
        struct mount *slave_mnt;
 
        /*
@@ -93,7 +93,7 @@ static int do_make_slave(struct mount *mnt)
 
        if (master) {
                list_for_each_entry(slave_mnt, &mnt->mnt.mnt_slave_list, mnt.mnt_slave)
-                       slave_mnt->mnt_master = &master->mnt;
+                       slave_mnt->mnt_master = master;
                list_move(&mnt->mnt.mnt_slave, &master->mnt.mnt_slave_list);
                list_splice(&mnt->mnt.mnt_slave_list, master->mnt.mnt_slave_list.prev);
                INIT_LIST_HEAD(&mnt->mnt.mnt_slave_list);
@@ -106,7 +106,7 @@ static int do_make_slave(struct mount *mnt)
                        slave_mnt->mnt_master = NULL;
                }
        }
-       mnt->mnt_master = &master->mnt;
+       mnt->mnt_master = master;
        CLEAR_MNT_SHARED(&mnt->mnt);
        return 0;
 }
@@ -149,9 +149,9 @@ static struct mount *propagation_next(struct mount *m,
                return first_slave(m);
 
        while (1) {
-               struct mount *master = real_mount(m->mnt_master);
+               struct mount *master = m->mnt_master;
 
-               if (&master->mnt == origin->mnt_master) {
+               if (master == origin->mnt_master) {
                        struct mount *next = next_peer(m);
                        return (next == origin) ? NULL : next;
                } else if (m->mnt.mnt_slave.next != &master->mnt.mnt_slave_list)
@@ -179,11 +179,11 @@ static struct mount *get_source(struct mount *dest,
        struct mount *p_last_src = NULL;
        struct mount *p_last_dest = NULL;
 
-       while (&last_dest->mnt != dest->mnt_master) {
+       while (last_dest != dest->mnt_master) {
                p_last_dest = last_dest;
                p_last_src = last_src;
-               last_dest = real_mount(last_dest->mnt_master);
-               last_src = real_mount(last_src->mnt_master);
+               last_dest = last_dest->mnt_master;
+               last_src = last_src->mnt_master;
        }
 
        if (p_last_dest) {