[PATCH] death of hfs rename_lock

	Useless (lock,waitqueue) pair killed - we have fs-wide
exclusion between renames enforced by VFS, so hfs rename_{lock,wait}
can be removed.

fs/hfs/catalog.c

@@ -1346,13 +1346,6 @@ int hfs_cat_move(struct hfs_cat_entry *old_dir, struct hfs_cat_entry *new_dir,
 		return -EINVAL;
 	}
 
-	while (mdb->rename_lock) {
-		hfs_sleep_on(&mdb->rename_wait);
-	}
-	spin_lock(&entry_lock);
-	mdb->rename_lock = 1; /* XXX: should be atomic_inc */
-	spin_unlock(&entry_lock);
-
 	/* keep readers from getting confused by changing dir size */
 	start_write(new_dir);
 	if (old_dir != new_dir) {
@@ -1567,11 +1560,6 @@ int hfs_cat_move(struct hfs_cat_entry *old_dir, struct hfs_cat_entry *new_dir,
 		end_write(old_dir);
 	}
 	end_write(new_dir);
-	spin_lock(&entry_lock);
-	mdb->rename_lock = 0; /* XXX: should use atomic_dec */
-	hfs_wake_up(&mdb->rename_wait);
-	spin_unlock(&entry_lock);
-
 	return error;
 }
 

fs/hfs/hfs.h

@@ -271,8 +271,6 @@ struct hfs_mdb {
 						   512-byte blocks per
 						   "allocation block" */
 	hfs_u16			attrib;		/* Attribute word */
-	hfs_wait_queue		rename_wait;
-	int			rename_lock;
 	hfs_wait_queue		bitmap_wait;
 	int			bitmap_lock;
         struct list_head        entry_dirty;

fs/hfs/mdb.c

@@ -100,7 +100,6 @@ struct hfs_mdb *hfs_mdb_get(hfs_sysmdb sys_mdb, int readonly,
 	mdb->magic = HFS_MDB_MAGIC;
 	mdb->sys_mdb = sys_mdb;
 	INIT_LIST_HEAD(&mdb->entry_dirty);
-	hfs_init_waitqueue(&mdb->rename_wait);
 	hfs_init_waitqueue(&mdb->bitmap_wait);
 
 	/* See if this is an HFS filesystem */