get rid of ->mnt_longterm

[linux-2.6-block.git] / fs / mount.h

diff --git a/fs/mount.h b/fs/mount.h
index 4ef36d93e5a241822e10c21f93dc72d7137d32ec..05a2a1185efcf2e560012c33042ceb8c406dc119 100644 (file)
--- a/fs/mount.h
+++ b/fs/mount.h
@@ -22,7 +22,6 @@ struct mount {
        struct vfsmount mnt;
 #ifdef CONFIG_SMP
        struct mnt_pcp __percpu *mnt_pcp;
-       atomic_t mnt_longterm;          /* how many of the refs are longterm */
 #else
        int mnt_count;
        int mnt_writers;
@@ -49,6 +48,8 @@ struct mount {
        int mnt_ghosts;
 };
 
+#define MNT_NS_INTERNAL ERR_PTR(-EINVAL) /* distinct from any mnt_namespace */
+
 static inline struct mount *real_mount(struct vfsmount *mnt)
 {
        return container_of(mnt, struct mount, mnt);
@@ -59,6 +60,12 @@ static inline int mnt_has_parent(struct mount *mnt)
        return mnt != mnt->mnt_parent;
 }
 
+static inline int is_mounted(struct vfsmount *mnt)
+{
+       /* neither detached nor internal? */
+       return !IS_ERR_OR_NULL(real_mount(mnt));
+}
+
 extern struct mount *__lookup_mnt(struct vfsmount *, struct dentry *, int);
 
 static inline void get_mnt_ns(struct mnt_namespace *ns)