-#include <linux/module.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"
{
struct btrfs_path *path;
int ret;
- struct btrfs_leaf *l;
+ struct extent_buffer *l;
struct btrfs_key search_key;
+ struct btrfs_key found_key;
int slot;
path = btrfs_alloc_path();
BUG_ON(!path);
- search_key.objectid = (u64)-1;
+ search_key.objectid = BTRFS_LAST_FREE_OBJECTID;
+ search_key.type = -1;
search_key.offset = (u64)-1;
ret = btrfs_search_slot(NULL, root, &search_key, path, 0, 0);
if (ret < 0)
BUG_ON(ret == 0);
if (path->slots[0] > 0) {
slot = path->slots[0] - 1;
- l = btrfs_buffer_leaf(path->nodes[0]);
- *objectid = btrfs_disk_key_objectid(&l->items[slot].key);
+ l = path->nodes[0];
+ btrfs_item_key_to_cpu(l, &found_key, slot);
+ *objectid = found_key.objectid;
} else {
*objectid = BTRFS_FIRST_FREE_OBJECTID;
}
struct btrfs_path *path;
struct btrfs_key key;
int ret;
- u64 hole_size = 0;
int slot = 0;
u64 last_ino = 0;
int start_found;
- struct btrfs_leaf *l;
+ struct extent_buffer *l;
struct btrfs_key search_key;
u64 search_start = dirid;
+ mutex_lock(&root->objectid_mutex);
+ if (root->last_inode_alloc >= BTRFS_FIRST_FREE_OBJECTID &&
+ root->last_inode_alloc < BTRFS_LAST_FREE_OBJECTID) {
+ *objectid = ++root->last_inode_alloc;
+ mutex_unlock(&root->objectid_mutex);
+ return 0;
+ }
path = btrfs_alloc_path();
BUG_ON(!path);
- search_key.flags = 0;
- search_start = root->last_inode_alloc;
search_start = max(search_start, BTRFS_FIRST_FREE_OBJECTID);
search_key.objectid = search_start;
+ search_key.type = 0;
search_key.offset = 0;
btrfs_init_path(path);
if (ret < 0)
goto error;
- if (path->slots[0] > 0)
- path->slots[0]--;
-
while (1) {
- l = btrfs_buffer_leaf(path->nodes[0]);
+ l = path->nodes[0];
slot = path->slots[0];
- if (slot >= btrfs_header_nritems(&l->header)) {
+ if (slot >= btrfs_header_nritems(l)) {
ret = btrfs_next_leaf(root, path);
if (ret == 0)
continue;
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;
}
+ } else if (key.objectid > search_start) {
+ *objectid = search_start;
+ goto found;
}
}
+ if (key.objectid >= BTRFS_LAST_FREE_OBJECTID)
+ break;
+
start_found = 1;
last_ino = key.objectid + 1;
path->slots[0]++;
}
- // FIXME -ENOSPC
+ BUG_ON(1);
found:
- root->last_inode_alloc = *objectid;
btrfs_release_path(root, path);
btrfs_free_path(path);
BUG_ON(*objectid < search_start);
+ mutex_unlock(&root->objectid_mutex);
return 0;
error:
btrfs_release_path(root, path);
btrfs_free_path(path);
+ mutex_unlock(&root->objectid_mutex);
return ret;
}