vfs: spread struct mount - umount_tree argument

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

diff --git a/fs/namespace.c b/fs/namespace.c
index 121e003..5bb40c5 100644 (file)
--- a/fs/namespace.c
+++ b/fs/namespace.c
@@ -1217,12 +1217,12 @@ void release_mounts(struct list_head *head)
  * vfsmount lock must be held for write
  * namespace_sem must be held for write
  */
-void umount_tree(struct vfsmount *mnt, int propagate, struct list_head *kill)
+void umount_tree(struct mount *mnt, int propagate, struct list_head *kill)
 {
        LIST_HEAD(tmp_list);
        struct mount *p;
 
-       for (p = real_mount(mnt); p; p = next_mnt(p, mnt))
+       for (p = mnt; p; p = next_mnt(p, &mnt->mnt))
                list_move(&p->mnt_hash, &tmp_list);
 
        if (propagate)
@@ -1327,7 +1327,7 @@ static int do_umount(struct vfsmount *mnt, int flags)
        retval = -EBUSY;
        if (flags & MNT_DETACH || !propagate_mount_busy(mnt, 2)) {
                if (!list_empty(&mnt->mnt_list))
-                       umount_tree(mnt, 1, &umount_list);
+                       umount_tree(real_mount(mnt), 1, &umount_list);
                retval = 0;
        }
        br_write_unlock(vfsmount_lock);
@@ -1455,7 +1455,7 @@ Enomem:
        if (res) {
                LIST_HEAD(umount_list);
                br_write_lock(vfsmount_lock);
-               umount_tree(&res->mnt, 0, &umount_list);
+               umount_tree(res, 0, &umount_list);
                br_write_unlock(vfsmount_lock);
                release_mounts(&umount_list);
        }
@@ -1476,7 +1476,7 @@ void drop_collected_mounts(struct vfsmount *mnt)
        LIST_HEAD(umount_list);
        down_write(&namespace_sem);
        br_write_lock(vfsmount_lock);
-       umount_tree(mnt, 0, &umount_list);
+       umount_tree(real_mount(mnt), 0, &umount_list);
        br_write_unlock(vfsmount_lock);
        up_write(&namespace_sem);
        release_mounts(&umount_list);
@@ -1773,7 +1773,7 @@ static int do_loopback(struct path *path, char *old_name,
        err = graft_tree(&mnt->mnt, path);
        if (err) {
                br_write_lock(vfsmount_lock);
-               umount_tree(&mnt->mnt, 0, &umount_list);
+               umount_tree(mnt, 0, &umount_list);
                br_write_unlock(vfsmount_lock);
        }
 out2:
@@ -2080,7 +2080,7 @@ EXPORT_SYMBOL(mnt_set_expiry);
  */
 void mark_mounts_for_expiry(struct list_head *mounts)
 {
-       struct vfsmount *mnt, *next;
+       struct mount *mnt, *next;
        LIST_HEAD(graveyard);
        LIST_HEAD(umounts);
 
@@ -2096,15 +2096,15 @@ void mark_mounts_for_expiry(struct list_head *mounts)
         * - still marked for expiry (marked on the last call here; marks are
         *   cleared by mntput())
         */
-       list_for_each_entry_safe(mnt, next, mounts, mnt_expire) {
-               if (!xchg(&mnt->mnt_expiry_mark, 1) ||
-                       propagate_mount_busy(mnt, 1))
+       list_for_each_entry_safe(mnt, next, mounts, mnt.mnt_expire) {
+               if (!xchg(&mnt->mnt.mnt_expiry_mark, 1) ||
+                       propagate_mount_busy(&mnt->mnt, 1))
                        continue;
-               list_move(&mnt->mnt_expire, &graveyard);
+               list_move(&mnt->mnt.mnt_expire, &graveyard);
        }
        while (!list_empty(&graveyard)) {
-               mnt = list_first_entry(&graveyard, struct vfsmount, mnt_expire);
-               touch_mnt_namespace(mnt->mnt_ns);
+               mnt = list_first_entry(&graveyard, struct mount, mnt.mnt_expire);
+               touch_mnt_namespace(mnt->mnt.mnt_ns);
                umount_tree(mnt, 1, &umounts);
        }
        br_write_unlock(vfsmount_lock);
@@ -2170,14 +2170,14 @@ resume:
 static void shrink_submounts(struct vfsmount *mnt, struct list_head *umounts)
 {
        LIST_HEAD(graveyard);
-       struct vfsmount *m;
+       struct mount *m;
 
        /* extract submounts of 'mountpoint' from the expiration list */
        while (select_submounts(mnt, &graveyard)) {
                while (!list_empty(&graveyard)) {
-                       m = list_first_entry(&graveyard, struct vfsmount,
-                                               mnt_expire);
-                       touch_mnt_namespace(m->mnt_ns);
+                       m = list_first_entry(&graveyard, struct mount,
+                                               mnt.mnt_expire);
+                       touch_mnt_namespace(m->mnt.mnt_ns);
                        umount_tree(m, 1, umounts);
                }
        }
@@ -2750,7 +2750,7 @@ void put_mnt_ns(struct mnt_namespace *ns)
                return;
        down_write(&namespace_sem);
        br_write_lock(vfsmount_lock);
-       umount_tree(ns->root, 0, &umount_list);
+       umount_tree(real_mount(ns->root), 0, &umount_list);
        br_write_unlock(vfsmount_lock);
        up_write(&namespace_sem);
        release_mounts(&umount_list);

diff --git a/fs/pnode.c b/fs/pnode.c
index a2f0f3e..efbe0c0 100644 (file)
--- a/fs/pnode.c
+++ b/fs/pnode.c
@@ -262,7 +262,7 @@ out:
        br_write_lock(vfsmount_lock);
        while (!list_empty(&tmp_list)) {
                child = list_first_entry(&tmp_list, struct mount, mnt_hash);
-               umount_tree(&child->mnt, 0, &umount_list);
+               umount_tree(child, 0, &umount_list);
        }
        br_write_unlock(vfsmount_lock);
        release_mounts(&umount_list);

diff --git a/fs/pnode.h b/fs/pnode.h
index ed8a84d..3f9ab4f 100644 (file)
--- a/fs/pnode.h
+++ b/fs/pnode.h
@@ -40,7 +40,7 @@ unsigned int mnt_get_count(struct vfsmount *mnt);
 void mnt_set_mountpoint(struct vfsmount *, struct dentry *,
                        struct vfsmount *);
 void release_mounts(struct list_head *);
-void umount_tree(struct vfsmount *, int, struct list_head *);
+void umount_tree(struct mount *, int, struct list_head *);
 struct mount *copy_tree(struct vfsmount *, struct dentry *, int);
 bool is_path_reachable(struct vfsmount *, struct dentry *,
                         const struct path *root);