new helper: inode_fake_hash()

[linux.git] / include / linux / fs.h

diff --git a/include/linux/fs.h b/include/linux/fs.h
index 5c91108846db20894ab70dafe43b7922fe08fb1f..43941e230e2b80be8843745f5d2e2f1f8f9f3342 100644 (file)
--- a/include/linux/fs.h
+++ b/include/linux/fs.h
@@ -684,6 +684,17 @@ static inline int inode_unhashed(struct inode *inode)
        return hlist_unhashed(&inode->i_hash);
 }
 
+/*
+ * __mark_inode_dirty expects inodes to be hashed.  Since we don't
+ * want special inodes in the fileset inode space, we make them
+ * appear hashed, but do not put on any lists.  hlist_del()
+ * will work fine and require no locking.
+ */
+static inline void inode_fake_hash(struct inode *inode)
+{
+       hlist_add_fake(&inode->i_hash);
+}
+
 /*
  * inode->i_mutex nesting subclasses for the lock validator:
  *
@@ -2016,6 +2027,8 @@ static inline void init_sync_kiocb(struct kiocb *kiocb, struct file *filp)
  * I_OVL_INUSE         Used by overlayfs to get exclusive ownership on upper
  *                     and work dirs among overlayfs mounts.
  *
+ * I_CREATING          New object's inode in the middle of setting up.
+ *
  * Q: What is the difference between I_WILL_FREE and I_FREEING?
  */
 #define I_DIRTY_SYNC           (1 << 0)
@@ -2036,7 +2049,8 @@ static inline void init_sync_kiocb(struct kiocb *kiocb, struct file *filp)
 #define __I_DIRTY_TIME_EXPIRED 12
 #define I_DIRTY_TIME_EXPIRED   (1 << __I_DIRTY_TIME_EXPIRED)
 #define I_WB_SWITCH            (1 << 13)
-#define I_OVL_INUSE                    (1 << 14)
+#define I_OVL_INUSE            (1 << 14)
+#define I_CREATING             (1 << 15)
 
 #define I_DIRTY_INODE (I_DIRTY_SYNC | I_DIRTY_DATASYNC)
 #define I_DIRTY (I_DIRTY_INODE | I_DIRTY_PAGES)
@@ -2919,6 +2933,7 @@ extern void lockdep_annotate_inode_mutex_key(struct inode *inode);
 static inline void lockdep_annotate_inode_mutex_key(struct inode *inode) { };
 #endif
 extern void unlock_new_inode(struct inode *);
+extern void discard_new_inode(struct inode *);
 extern unsigned int get_next_ino(void);
 extern void evict_inodes(struct super_block *sb);