Btrfs: Introduce global metadata reservation
Reserve metadata space for extent tree, checksum tree and root tree
Signed-off-by: Yan Zheng <zheng.yan@oracle.com>
Signed-off-by: Chris Mason <chris.mason@oracle.com>
diff --git a/fs/btrfs/inode.c b/fs/btrfs/inode.c
index 6e54665..f9c40b8 100644
--- a/fs/btrfs/inode.c
+++ b/fs/btrfs/inode.c
@@ -4060,7 +4060,7 @@
struct btrfs_trans_handle *trans;
int ret = 0;
- if (root->fs_info->btree_inode == inode)
+ if (BTRFS_I(inode)->dummy_inode)
return 0;
if (wbc->sync_mode == WB_SYNC_ALL) {
@@ -4081,10 +4081,19 @@
{
struct btrfs_root *root = BTRFS_I(inode)->root;
struct btrfs_trans_handle *trans;
+ int ret;
+
+ if (BTRFS_I(inode)->dummy_inode)
+ return;
trans = btrfs_join_transaction(root, 1);
btrfs_set_trans_block_group(trans, inode);
- btrfs_update_inode(trans, root, inode);
+
+ ret = btrfs_update_inode(trans, root, inode);
+ if (ret)
+ printk(KERN_ERR"btrfs: fail to dirty inode %lu error %d\n",
+ inode->i_ino, ret);
+
btrfs_end_transaction(trans, root);
}