vfs: spread struct mount - is_path_reachable
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
diff --git a/fs/namespace.c b/fs/namespace.c
index ced3aa5..b117d94 100644
--- a/fs/namespace.c
+++ b/fs/namespace.c
@@ -2559,21 +2559,21 @@
*
* namespace_sem or vfsmount_lock is held
*/
-bool is_path_reachable(struct vfsmount *mnt, struct dentry *dentry,
+bool is_path_reachable(struct mount *mnt, struct dentry *dentry,
const struct path *root)
{
- while (mnt != root->mnt && mnt_has_parent(real_mount(mnt))) {
- dentry = mnt->mnt_mountpoint;
- mnt = mnt->mnt_parent;
+ while (&mnt->mnt != root->mnt && mnt_has_parent(mnt)) {
+ dentry = mnt->mnt.mnt_mountpoint;
+ mnt = real_mount(mnt->mnt.mnt_parent);
}
- return mnt == root->mnt && is_subdir(dentry, root->dentry);
+ return &mnt->mnt == root->mnt && is_subdir(dentry, root->dentry);
}
int path_is_under(struct path *path1, struct path *path2)
{
int res;
br_read_lock(vfsmount_lock);
- res = is_path_reachable(path1->mnt, path1->dentry, path2);
+ res = is_path_reachable(real_mount(path1->mnt), path1->dentry, path2);
br_read_unlock(vfsmount_lock);
return res;
}
@@ -2659,7 +2659,7 @@
if (!mnt_has_parent(new_mnt))
goto out4; /* not attached */
/* make sure we can reach put_old from new_root */
- if (!is_path_reachable(old.mnt, old.dentry, &new))
+ if (!is_path_reachable(real_mount(old.mnt), old.dentry, &new))
goto out4;
br_write_lock(vfsmount_lock);
detach_mnt(new_mnt, &parent_path);