Merge branch 'for-2.6.39/core' of git://git.kernel.dk/linux-2.6-block

[pandora-kernel.git] / include / linux / dcache.h

diff --git a/include/linux/dcache.h b/include/linux/dcache.h
index bd07758..f2afed4 100644 (file)
--- a/include/linux/dcache.h
+++ b/include/linux/dcache.h
@@ -167,6 +167,8 @@ struct dentry_operations {
        void (*d_release)(struct dentry *);
        void (*d_iput)(struct dentry *, struct inode *);
        char *(*d_dname)(struct dentry *, char *, int);
+       struct vfsmount *(*d_automount)(struct path *);
+       int (*d_manage)(struct dentry *, bool);
 } ____cacheline_aligned;
 
 /*
@@ -205,13 +207,18 @@ struct dentry_operations {
 
 #define DCACHE_CANT_MOUNT      0x0100
 #define DCACHE_GENOCIDE                0x0200
-#define DCACHE_MOUNTED         0x0400  /* is a mountpoint */
 
 #define DCACHE_OP_HASH         0x1000
 #define DCACHE_OP_COMPARE      0x2000
 #define DCACHE_OP_REVALIDATE   0x4000
 #define DCACHE_OP_DELETE       0x8000
 
+#define DCACHE_MOUNTED         0x10000 /* is a mountpoint */
+#define DCACHE_NEED_AUTOMOUNT  0x20000 /* handle automount on this dir */
+#define DCACHE_MANAGE_TRANSIT  0x40000 /* manage transit from this dirent */
+#define DCACHE_MANAGED_DENTRY \
+       (DCACHE_MOUNTED|DCACHE_NEED_AUTOMOUNT|DCACHE_MANAGE_TRANSIT)
+
 extern seqlock_t rename_lock;
 
 static inline int dname_external(struct dentry *dentry)
@@ -307,7 +314,7 @@ extern struct dentry *__d_lookup_rcu(struct dentry *parent, struct qstr *name,
  * __d_rcu_to_refcount - take a refcount on dentry if sequence check is ok
  * @dentry: dentry to take a ref on
  * @seq: seqcount to verify against
- * @Returns: 0 on failure, else 1.
+ * Returns: 0 on failure, else 1.
  *
  * __d_rcu_to_refcount operates on a dentry,seq pair that was returned
  * by __d_lookup_rcu, to get a reference on an rcu-walk dentry.
@@ -399,12 +406,16 @@ static inline void dont_mount(struct dentry *dentry)
 
 extern void dput(struct dentry *);
 
-static inline int d_mountpoint(struct dentry *dentry)
+static inline bool d_managed(struct dentry *dentry)
+{
+       return dentry->d_flags & DCACHE_MANAGED_DENTRY;
+}
+
+static inline bool d_mountpoint(struct dentry *dentry)
 {
        return dentry->d_flags & DCACHE_MOUNTED;
 }
 
-extern struct vfsmount *lookup_mnt(struct path *);
 extern struct dentry *lookup_create(struct nameidata *nd, int is_dir);
 
 extern int sysctl_vfs_cache_pressure;