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authorYan, Zheng <zheng.yan@oracle.com>2010-05-16 10:49:58 -0400
committerChris Mason <chris.mason@oracle.com>2010-05-25 10:34:52 -0400
commitd68fc57b7e3245cfacf2e3b47acfed1946a11786 (patch)
treec2572fcd935017440c8370c8a12ceb49a7fc4f1f /fs/btrfs/disk-io.c
parent8929ecfa50f266163832eeacfbc3642ed5eb83b6 (diff)
Btrfs: Metadata reservation for orphan inodes
reserve metadata space for handling orphan inodes Signed-off-by: Yan Zheng <zheng.yan@oracle.com> Signed-off-by: Chris Mason <chris.mason@oracle.com>
Diffstat (limited to 'fs/btrfs/disk-io.c')
-rw-r--r--fs/btrfs/disk-io.c32
1 files changed, 20 insertions, 12 deletions
diff --git a/fs/btrfs/disk-io.c b/fs/btrfs/disk-io.c
index 309d8c08a640..82955b73a962 100644
--- a/fs/btrfs/disk-io.c
+++ b/fs/btrfs/disk-io.c
@@ -894,7 +894,8 @@ static int __setup_root(u32 nodesize, u32 leafsize, u32 sectorsize,
root->ref_cows = 0;
root->track_dirty = 0;
root->in_radix = 0;
- root->clean_orphans = 0;
+ root->orphan_item_inserted = 0;
+ root->orphan_cleanup_state = 0;
root->fs_info = fs_info;
root->objectid = objectid;
@@ -904,12 +905,13 @@ static int __setup_root(u32 nodesize, u32 leafsize, u32 sectorsize,
root->in_sysfs = 0;
root->inode_tree = RB_ROOT;
root->block_rsv = NULL;
+ root->orphan_block_rsv = NULL;
INIT_LIST_HEAD(&root->dirty_list);
INIT_LIST_HEAD(&root->orphan_list);
INIT_LIST_HEAD(&root->root_list);
spin_lock_init(&root->node_lock);
- spin_lock_init(&root->list_lock);
+ spin_lock_init(&root->orphan_lock);
spin_lock_init(&root->inode_lock);
spin_lock_init(&root->accounting_lock);
mutex_init(&root->objectid_mutex);
@@ -1193,19 +1195,23 @@ again:
if (root)
return root;
- ret = btrfs_find_orphan_item(fs_info->tree_root, location->objectid);
- if (ret == 0)
- ret = -ENOENT;
- if (ret < 0)
- return ERR_PTR(ret);
-
root = btrfs_read_fs_root_no_radix(fs_info->tree_root, location);
if (IS_ERR(root))
return root;
- WARN_ON(btrfs_root_refs(&root->root_item) == 0);
set_anon_super(&root->anon_super, NULL);
+ if (btrfs_root_refs(&root->root_item) == 0) {
+ ret = -ENOENT;
+ goto fail;
+ }
+
+ ret = btrfs_find_orphan_item(fs_info->tree_root, location->objectid);
+ if (ret < 0)
+ goto fail;
+ if (ret == 0)
+ root->orphan_item_inserted = 1;
+
ret = radix_tree_preload(GFP_NOFS & ~__GFP_HIGHMEM);
if (ret)
goto fail;
@@ -1214,10 +1220,9 @@ again:
ret = radix_tree_insert(&fs_info->fs_roots_radix,
(unsigned long)root->root_key.objectid,
root);
- if (ret == 0) {
+ if (ret == 0)
root->in_radix = 1;
- root->clean_orphans = 1;
- }
+
spin_unlock(&fs_info->fs_roots_radix_lock);
radix_tree_preload_end();
if (ret) {
@@ -1981,6 +1986,9 @@ struct btrfs_root *open_ctree(struct super_block *sb,
BUG_ON(ret);
if (!(sb->s_flags & MS_RDONLY)) {
+ ret = btrfs_cleanup_fs_roots(fs_info);
+ BUG_ON(ret);
+
ret = btrfs_recover_relocation(tree_root);
if (ret < 0) {
printk(KERN_WARNING