vfs: all counters taken to struct mount

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

1 files changed, 12 insertions, 0 deletions

diff --git a/fs/mount.h b/fs/mount.h
index 853738f5897f..452ae41e0131 100644
--- a/fs/mount.h
+++ b/fs/mount.h
@@ -1,10 +1,22 @@
 #include <linux/mount.h>
 
+struct mnt_pcp {
+        int mnt_count;
+        int mnt_writers;
+};
+
 struct mount {
         struct list_head mnt_hash;
         struct mount *mnt_parent;
         struct dentry *mnt_mountpoint;
         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;
+#endif
 };
 
 static inline struct mount *real_mount(struct vfsmount *mnt)