commit 5caf2a002901f0fde475371c4bf1c553b51884af
author Chris Mason <chris.mason@oracle.com> Mon Apr 02 11:20:42 2007 -0400
committer David Woodhouse <dwmw2@hera.kernel.org> Mon Apr 02 11:20:42 2007 -0400
tree 1c262f723307fe924ea4e960761354f194f3843e
parent 2c90e5d658424bc71b111eb5a972240d5d06fe86

Btrfs: dynamic allocation of path struct

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

fs/btrfs/file-item.c

diff --git a/fs/btrfs/file-item.c b/fs/btrfs/file-item.c
index c3992b7..e7510ac 100644
--- a/fs/btrfs/file-item.c
+++ b/fs/btrfs/file-item.c
@@ -13,9 +13,11 @@
 	int ret = 0;
 	struct btrfs_file_extent_item *item;
 	struct btrfs_key file_key;
-	struct btrfs_path path;
+	struct btrfs_path *path;
 
-	btrfs_init_path(&path);
+	path = btrfs_alloc_path();
+	BUG_ON(!path);
+	btrfs_init_path(path);
 	ret = btrfs_alloc_extent(trans, root, num_blocks, hint_block,
 				 (u64)-1, objectid, &ins);
 	BUG_ON(ret);
@@ -24,19 +26,20 @@
 	file_key.flags = 0;
 	btrfs_set_key_type(&file_key, BTRFS_EXTENT_DATA_KEY);
 
-	ret = btrfs_insert_empty_item(trans, root, &path, &file_key,
+	ret = btrfs_insert_empty_item(trans, root, path, &file_key,
 				      sizeof(*item));
 	BUG_ON(ret);
-	item = btrfs_item_ptr(btrfs_buffer_leaf(path.nodes[0]), path.slots[0],
+	item = btrfs_item_ptr(btrfs_buffer_leaf(path->nodes[0]), path->slots[0],
 			      struct btrfs_file_extent_item);
 	btrfs_set_file_extent_disk_blocknr(item, ins.objectid);
 	btrfs_set_file_extent_disk_num_blocks(item, ins.offset);
 	btrfs_set_file_extent_offset(item, 0);
 	btrfs_set_file_extent_num_blocks(item, ins.offset);
 	btrfs_set_file_extent_generation(item, trans->transid);
-	btrfs_mark_buffer_dirty(path.nodes[0]);
+	btrfs_mark_buffer_dirty(path->nodes[0]);
 	*result = ins.objectid;
-	btrfs_release_path(root, &path);
+	btrfs_release_path(root, path);
+	btrfs_free_path(path);
 	return 0;
 }
 
@@ -65,25 +68,28 @@
 {
 	int ret;
 	struct btrfs_key file_key;
-	struct btrfs_path path;
+	struct btrfs_path *path;
 	struct btrfs_csum_item *item;
 
-	btrfs_init_path(&path);
+	path = btrfs_alloc_path();
+	BUG_ON(!path);
+	btrfs_init_path(path);
 	file_key.objectid = objectid;
 	file_key.offset = offset;
 	file_key.flags = 0;
 	btrfs_set_key_type(&file_key, BTRFS_CSUM_ITEM_KEY);
-	ret = btrfs_insert_empty_item(trans, root, &path, &file_key,
+	ret = btrfs_insert_empty_item(trans, root, path, &file_key,
 				      BTRFS_CSUM_SIZE);
 	if (ret != 0 && ret != -EEXIST)
 		goto fail;
-	item = btrfs_item_ptr(btrfs_buffer_leaf(path.nodes[0]), path.slots[0],
+	item = btrfs_item_ptr(btrfs_buffer_leaf(path->nodes[0]), path->slots[0],
 			      struct btrfs_csum_item);
 	ret = 0;
 	ret = btrfs_csum_data(root, data, len, item->csum);
-	btrfs_mark_buffer_dirty(path.nodes[0]);
+	btrfs_mark_buffer_dirty(path->nodes[0]);
 fail:
-	btrfs_release_path(root, &path);
+	btrfs_release_path(root, path);
+	btrfs_free_path(path);
 	return ret;
 }
 
@@ -93,19 +99,21 @@
 {
 	int ret;
 	struct btrfs_key file_key;
-	struct btrfs_path path;
+	struct btrfs_path *path;
 	struct btrfs_csum_item *item;
 	char result[BTRFS_CSUM_SIZE];
 
-	btrfs_init_path(&path);
+	path = btrfs_alloc_path();
+	BUG_ON(!path);
+	btrfs_init_path(path);
 	file_key.objectid = objectid;
 	file_key.offset = offset;
 	file_key.flags = 0;
 	btrfs_set_key_type(&file_key, BTRFS_CSUM_ITEM_KEY);
-	ret = btrfs_search_slot(NULL, root, &file_key, &path, 0, 0);
+	ret = btrfs_search_slot(NULL, root, &file_key, path, 0, 0);
 	if (ret)
 		goto fail;
-	item = btrfs_item_ptr(btrfs_buffer_leaf(path.nodes[0]), path.slots[0],
+	item = btrfs_item_ptr(btrfs_buffer_leaf(path->nodes[0]), path->slots[0],
 			      struct btrfs_csum_item);
 	ret = 0;
 	ret = btrfs_csum_data(root, data, len, result);
@@ -113,7 +121,8 @@
 	if (memcmp(result, item->csum, BTRFS_CSUM_SIZE))
 		ret = 1;
 fail:
-	btrfs_release_path(root, &path);
+	btrfs_release_path(root, path);
+	btrfs_free_path(path);
 	return ret;
 }