From: Chris Mason <chris.mason@oracle.com>
Date: Thu, 5 Apr 2007 01:22:22 +0000 (-0400)
Subject: Btrfs: add dir inode index
X-Git-Tag: v2.6.29-rc1~27^2~9^2~55^2~56^2~30^2~617
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=bae45de03c4d54a9893dedf8a015beb2608b896a;p=pandora-kernel.git

Btrfs: add dir inode index

Signed-off-by: Chris Mason <chris.mason@oracle.com>
---

diff --git a/fs/btrfs/ctree.h b/fs/btrfs/ctree.h
index 41cc013ef08d..87c56222a620 100644
--- a/fs/btrfs/ctree.h
+++ b/fs/btrfs/ctree.h
@@ -282,41 +282,42 @@ struct btrfs_root {
  * for every name in a directory.
  */
 #define BTRFS_DIR_ITEM_KEY	2
+#define BTRFS_DIR_INDEX_KEY	3
 /*
  * inline data is file data that fits in the btree.
  */
-#define BTRFS_INLINE_DATA_KEY	3
+#define BTRFS_INLINE_DATA_KEY	4
 /*
  * extent data is for data that can't fit in the btree.  It points to
  * a (hopefully) huge chunk of disk
  */
-#define BTRFS_EXTENT_DATA_KEY	4
+#define BTRFS_EXTENT_DATA_KEY	5
 /*
  * csum items have the checksums for data in the extents
  */
-#define BTRFS_CSUM_ITEM_KEY	5
+#define BTRFS_CSUM_ITEM_KEY	6
 
 /*
  * root items point to tree roots.  There are typically in the root
  * tree used by the super block to find all the other trees
  */
-#define BTRFS_ROOT_ITEM_KEY	6
+#define BTRFS_ROOT_ITEM_KEY	7
 /*
  * extent items are in the extent map tree.  These record which blocks
  * are used, and how many references there are to each block
  */
-#define BTRFS_EXTENT_ITEM_KEY	7
+#define BTRFS_EXTENT_ITEM_KEY	8
 
 /*
  * the inode map records which inode numbers are in use and where
  * they actually live on disk
  */
-#define BTRFS_INODE_MAP_ITEM_KEY 8
+#define BTRFS_INODE_MAP_ITEM_KEY 9
 /*
  * string items are for debugging.  They just store a short string of
  * data in the FS
  */
-#define BTRFS_STRING_ITEM_KEY	9
+#define BTRFS_STRING_ITEM_KEY	10
 
 static inline u64 btrfs_inode_generation(struct btrfs_inode_item *i)
 {
diff --git a/fs/btrfs/dir-item.c b/fs/btrfs/dir-item.c
index baceb1da609f..2a87e23ac9c9 100644
--- a/fs/btrfs/dir-item.c
+++ b/fs/btrfs/dir-item.c
@@ -37,6 +37,25 @@ int btrfs_insert_dir_item(struct btrfs_trans_handle *trans, struct btrfs_root
 	name_ptr = (char *)(dir_item + 1);
 	btrfs_memcpy(root, path->nodes[0]->b_data, name_ptr, name, name_len);
 	btrfs_mark_buffer_dirty(path->nodes[0]);
+	btrfs_release_path(root, path);
+
+	btrfs_set_key_type(&key, BTRFS_DIR_INDEX_KEY);
+	key.offset = objectid;
+	ret = btrfs_insert_empty_item(trans, root, path, &key, data_size);
+	// FIXME clear the dirindex bit
+	if (ret)
+		goto out;
+
+	dir_item = btrfs_item_ptr(btrfs_buffer_leaf(path->nodes[0]),
+				  path->slots[0],
+				  struct btrfs_dir_item);
+	btrfs_set_dir_objectid(dir_item, objectid);
+	btrfs_set_dir_type(dir_item, type);
+	btrfs_set_dir_flags(dir_item, 0);
+	btrfs_set_dir_name_len(dir_item, name_len);
+	name_ptr = (char *)(dir_item + 1);
+	btrfs_memcpy(root, path->nodes[0]->b_data, name_ptr, name, name_len);
+	btrfs_mark_buffer_dirty(path->nodes[0]);
 out:
 	btrfs_release_path(root, path);
 	btrfs_free_path(path);
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