X-Git-Url: http://review.tizen.org/git/?a=blobdiff_plain;ds=sidebyside;f=inode-map.c;h=9000e69b8d6fa5931840a6d793ced91baeb10a81;hb=6af3cc08ddb5c0165d357ffa36422c2716ebd2a0;hp=f412b33921356d6f12b7288cb379425a84144ce3;hpb=099f1ae6e49f844be2acb6316357d1466defb723;p=platform%2Fupstream%2Fbtrfs-progs.git

diff --git a/inode-map.c b/inode-map.c
index f412b33..9000e69 100644
--- a/inode-map.c
+++ b/inode-map.c
@@ -1,52 +1,68 @@
-#include <stdio.h>
-#include <stdlib.h>
-#include "kerncompat.h"
-#include "radix-tree.h"
+/*
+ * Copyright (C) 2007 Oracle.  All rights reserved.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public
+ * License v2 as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public
+ * License along with this program; if not, write to the
+ * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+ * Boston, MA 021110-1307, USA.
+ */
+
 #include "ctree.h"
 #include "disk-io.h"
 #include "transaction.h"
+#include "internal.h"
 
 /*
  * walks the btree of allocated inodes and find a hole.
  */
 int btrfs_find_free_objectid(struct btrfs_trans_handle *trans,
-			     struct btrfs_root *fs_root,
+			     struct btrfs_root *root,
 			     u64 dirid, u64 *objectid)
 {
-	struct btrfs_path path;
+	struct btrfs_path *path;
 	struct btrfs_key key;
 	int ret;
-	u64 hole_size = 0;
 	int slot = 0;
-	u64 last_ino;
+	u64 last_ino = 0;
 	int start_found;
-	struct btrfs_leaf *l;
-	struct btrfs_root *root = fs_root->fs_info->inode_root;
+	struct extent_buffer *l;
 	struct btrfs_key search_key;
 	u64 search_start = dirid;
 
-	if (fs_root->fs_info->last_inode_alloc_dirid == dirid)
-		search_start = fs_root->fs_info->last_inode_alloc;
+	path = btrfs_alloc_path();
+	if (!path)
+		return -ENOMEM;
 
+	search_start = root->last_inode_alloc;
+	search_start = max((unsigned long long)search_start,
+				BTRFS_FIRST_FREE_OBJECTID);
 	search_key.objectid = search_start;
-	search_key.flags = 0;
-	btrfs_set_key_type(&search_key, BTRFS_INODE_MAP_ITEM_KEY);
 	search_key.offset = 0;
+	search_key.type = 0;
 
-	btrfs_init_path(&path);
+	btrfs_init_path(path);
 	start_found = 0;
-	ret = btrfs_search_slot(trans, root, &search_key, &path, 0, 0);
+	ret = btrfs_search_slot(trans, root, &search_key, path, 0, 0);
 	if (ret < 0)
 		goto error;
 
-	if (path.slots[0] > 0)
-		path.slots[0]--;
+	if (path->slots[0] > 0)
+		path->slots[0]--;
 
 	while (1) {
-		l = &path.nodes[0]->leaf;
-		slot = path.slots[0];
-		if (slot >= btrfs_header_nritems(&l->header)) {
-			ret = btrfs_next_leaf(root, &path);
+		l = path->nodes[0];
+		slot = path->slots[0];
+		if (slot >= btrfs_header_nritems(l)) {
+			ret = btrfs_next_leaf(root, path);
 			if (ret == 0)
 				continue;
 			if (ret < 0)
@@ -60,13 +76,12 @@ int btrfs_find_free_objectid(struct btrfs_trans_handle *trans,
 				last_ino : search_start;
 			goto found;
 		}
-		btrfs_disk_key_to_cpu(&key, &l->items[slot].key);
+		btrfs_item_key_to_cpu(l, &key, slot);
 		if (key.objectid >= search_start) {
 			if (start_found) {
 				if (last_ino < search_start)
 					last_ino = search_start;
-				hole_size = key.objectid - last_ino;
-				if (hole_size > 0) {
+				if (key.objectid > last_ino) {
 					*objectid = last_ino;
 					goto found;
 				}
@@ -74,63 +89,15 @@ int btrfs_find_free_objectid(struct btrfs_trans_handle *trans,
 		}
 		start_found = 1;
 		last_ino = key.objectid + 1;
-		path.slots[0]++;
+		path->slots[0]++;
 	}
 	// FIXME -ENOSPC
 found:
-	root->fs_info->last_inode_alloc = *objectid;
-	root->fs_info->last_inode_alloc_dirid = dirid;
-	btrfs_release_path(root, &path);
+	root->last_inode_alloc = *objectid;
+	btrfs_free_path(path);
 	BUG_ON(*objectid < search_start);
 	return 0;
 error:
-	btrfs_release_path(root, &path);
-	return ret;
-}
-
-int btrfs_insert_inode_map(struct btrfs_trans_handle *trans,
-			   struct btrfs_root *fs_root,
-			   u64 objectid, struct btrfs_key *location)
-{
-	int ret = 0;
-	struct btrfs_path path;
-	struct btrfs_inode_map_item *inode_item;
-	struct btrfs_key key;
-	struct btrfs_root *inode_root = fs_root->fs_info->inode_root;
-
-	key.objectid = objectid;
-	key.flags = 0;
-	btrfs_set_key_type(&key, BTRFS_INODE_MAP_ITEM_KEY);
-	key.offset = 0;
-	btrfs_init_path(&path);
-	ret = btrfs_insert_empty_item(trans, inode_root, &path, &key,
-				      sizeof(struct btrfs_inode_map_item));
-	if (ret)
-		goto out;
-
-	inode_item = btrfs_item_ptr(&path.nodes[0]->leaf, path.slots[0],
-				  struct btrfs_inode_map_item);
-	btrfs_cpu_key_to_disk(&inode_item->key, location);
-out:
-	btrfs_release_path(inode_root, &path);
+	btrfs_free_path(path);
 	return ret;
 }
-
-int btrfs_lookup_inode_map(struct btrfs_trans_handle *trans,
-			   struct btrfs_root *fs_root, struct btrfs_path *path,
-			   u64 objectid, int mod)
-{
-	int ret;
-	struct btrfs_key key;
-	int ins_len = mod < 0 ? -1 : 0;
-	int cow = mod != 0;
-	struct btrfs_root *inode_root = fs_root->fs_info->inode_root;
-
-	key.objectid = objectid;
-	key.flags = 0;
-	key.offset = 0;
-	btrfs_set_key_type(&key, BTRFS_INODE_MAP_ITEM_KEY);
-	ret = btrfs_search_slot(trans, inode_root, &key, path, ins_len, cow);
-	return ret;
-}
-