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authorAl Viro <viro@zeniv.linux.org.uk>2011-11-24 23:35:54 -0500
committerAl Viro <viro@zeniv.linux.org.uk>2012-01-03 22:57:06 -0500
commit6fc7871fed915914ef441efbe0f9a7c3d0f3bff1 (patch)
treecbbab1aaa3c5f86d5253914a4720b1acf0d109e4 /fs/pnode.c
parent6b41d536f7c84e7cb1c1462073150277e46f6ea8 (diff)
vfs: spread struct mount - get_dominating_id / do_make_slave
next pile of horrors, similar to mnt_parent one; this time it's mnt_master. Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Diffstat (limited to 'fs/pnode.c')
-rw-r--r--fs/pnode.c58
1 files changed, 29 insertions, 29 deletions
diff --git a/fs/pnode.c b/fs/pnode.c
index 8cd90d2ec05e..29e366dec024 100644
--- a/fs/pnode.c
+++ b/fs/pnode.c
@@ -28,19 +28,19 @@ static inline struct vfsmount *next_slave(struct vfsmount *p)
return list_entry(p->mnt_slave.next, struct vfsmount, mnt_slave);
}
-static struct vfsmount *get_peer_under_root(struct vfsmount *mnt,
- struct mnt_namespace *ns,
- const struct path *root)
+static struct mount *get_peer_under_root(struct mount *mnt,
+ struct mnt_namespace *ns,
+ const struct path *root)
{
- struct mount *m = real_mount(mnt);
+ struct mount *m = mnt;
do {
/* Check the namespace first for optimization */
if (m->mnt.mnt_ns == ns && is_path_reachable(m, m->mnt.mnt_root, root))
- return &m->mnt;
+ return m;
m = real_mount(next_peer(&m->mnt));
- } while (&m->mnt != mnt);
+ } while (m != mnt);
return NULL;
}
@@ -51,22 +51,22 @@ static struct vfsmount *get_peer_under_root(struct vfsmount *mnt,
*
* Caller must hold namespace_sem
*/
-int get_dominating_id(struct vfsmount *mnt, const struct path *root)
+int get_dominating_id(struct mount *mnt, const struct path *root)
{
- struct vfsmount *m;
+ struct mount *m;
- for (m = mnt->mnt_master; m != NULL; m = m->mnt_master) {
- struct vfsmount *d = get_peer_under_root(m, mnt->mnt_ns, root);
+ for (m = real_mount(mnt->mnt.mnt_master); m != NULL; m = real_mount(m->mnt.mnt_master)) {
+ struct mount *d = get_peer_under_root(m, mnt->mnt.mnt_ns, root);
if (d)
- return d->mnt_group_id;
+ return d->mnt.mnt_group_id;
}
return 0;
}
-static int do_make_slave(struct vfsmount *mnt)
+static int do_make_slave(struct mount *mnt)
{
- struct vfsmount *peer_mnt = mnt, *master = mnt->mnt_master;
+ struct mount *peer_mnt = mnt, *master = real_mount(mnt->mnt.mnt_master);
struct vfsmount *slave_mnt;
/*
@@ -74,31 +74,31 @@ static int do_make_slave(struct vfsmount *mnt)
* same root dentry. If none is available then
* slave it to anything that is available.
*/
- while ((peer_mnt = next_peer(peer_mnt)) != mnt &&
- peer_mnt->mnt_root != mnt->mnt_root) ;
+ while ((peer_mnt = real_mount(next_peer(&peer_mnt->mnt))) != mnt &&
+ peer_mnt->mnt.mnt_root != mnt->mnt.mnt_root) ;
if (peer_mnt == mnt) {
- peer_mnt = next_peer(mnt);
+ peer_mnt = real_mount(next_peer(&mnt->mnt));
if (peer_mnt == mnt)
peer_mnt = NULL;
}
- if (IS_MNT_SHARED(mnt) && list_empty(&mnt->mnt_share))
- mnt_release_group_id(real_mount(mnt));
+ if (IS_MNT_SHARED(&mnt->mnt) && list_empty(&mnt->mnt.mnt_share))
+ mnt_release_group_id(mnt);
- list_del_init(&mnt->mnt_share);
- mnt->mnt_group_id = 0;
+ list_del_init(&mnt->mnt.mnt_share);
+ mnt->mnt.mnt_group_id = 0;
if (peer_mnt)
master = peer_mnt;
if (master) {
- list_for_each_entry(slave_mnt, &mnt->mnt_slave_list, mnt_slave)
- slave_mnt->mnt_master = master;
- list_move(&mnt->mnt_slave, &master->mnt_slave_list);
- list_splice(&mnt->mnt_slave_list, master->mnt_slave_list.prev);
- INIT_LIST_HEAD(&mnt->mnt_slave_list);
+ list_for_each_entry(slave_mnt, &mnt->mnt.mnt_slave_list, mnt_slave)
+ slave_mnt->mnt_master = &master->mnt;
+ 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);
} else {
- struct list_head *p = &mnt->mnt_slave_list;
+ struct list_head *p = &mnt->mnt.mnt_slave_list;
while (!list_empty(p)) {
slave_mnt = list_first_entry(p,
struct vfsmount, mnt_slave);
@@ -106,8 +106,8 @@ static int do_make_slave(struct vfsmount *mnt)
slave_mnt->mnt_master = NULL;
}
}
- mnt->mnt_master = master;
- CLEAR_MNT_SHARED(mnt);
+ mnt->mnt.mnt_master = &master->mnt;
+ CLEAR_MNT_SHARED(&mnt->mnt);
return 0;
}
@@ -120,7 +120,7 @@ void change_mnt_propagation(struct mount *mnt, int type)
set_mnt_shared(mnt);
return;
}
- do_make_slave(&mnt->mnt);
+ do_make_slave(mnt);
if (type != MS_SLAVE) {
list_del_init(&mnt->mnt.mnt_slave);
mnt->mnt.mnt_master = NULL;