1 files changed, 7 insertions, 0 deletions

diff --git a/include/linux/dcache.h b/include/linux/dcache.h
index 19d90a55541d..5fa5bd33b979 100644
--- a/include/linux/dcache.h
+++ b/include/linux/dcache.h
@@ -216,6 +216,7 @@ struct dentry_operations {
 #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_NEED_LOOKUP      0x80000 /* dentry requires i_op->lookup */
 #define DCACHE_MANAGED_DENTRY \
         (DCACHE_MOUNTED|DCACHE_NEED_AUTOMOUNT|DCACHE_MANAGE_TRANSIT)
 
@@ -416,6 +417,12 @@ static inline bool d_mountpoint(struct dentry *dentry)
         return dentry->d_flags & DCACHE_MOUNTED;
 }
 
+static inline bool d_need_lookup(struct dentry *dentry)
+{
+        return dentry->d_flags & DCACHE_NEED_LOOKUP;
+}
+
+extern void d_clear_need_lookup(struct dentry *dentry);
 extern struct dentry *lookup_create(struct nameidata *nd, int is_dir);
 
 extern int sysctl_vfs_cache_pressure;