commit 4ca8b41e3fe76cc5774fbcc6cba64259d69e0f96
author Chris Mason <chris.mason@oracle.com> Tue Aug 05 13:30:48 2008 -0400
committer Chris Mason <chris.mason@oracle.com> Thu Sep 25 11:04:06 2008 -0400
tree f3f0b47dc8a72657105eff6f6b005b8d2d3699cc
parent 7ea394f1192bee1af67ea4762c88ef4b7b0487a8

Btrfs: Avoid calling into the FS for the final iput on fake root inodes

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

fs/btrfs/disk-io.c

diff --git a/fs/btrfs/disk-io.c b/fs/btrfs/disk-io.c
index 7654368..56c54a4 100644
--- a/fs/btrfs/disk-io.c
+++ b/fs/btrfs/disk-io.c
@@ -1739,6 +1739,7 @@
 		free_extent_buffer(root->fs_info->dev_root->node);
 
 	btrfs_free_block_groups(root->fs_info);
+	fs_info->closing = 2;
 	del_fs_roots(fs_info);
 
 	filemap_write_and_wait(fs_info->btree_inode->i_mapping);

fs/btrfs/inode.c

diff --git a/fs/btrfs/inode.c b/fs/btrfs/inode.c
index c33053b..a26d365 100644
--- a/fs/btrfs/inode.c
+++ b/fs/btrfs/inode.c
@@ -2092,6 +2092,9 @@
 	struct btrfs_trans_handle *trans;
 	int ret = 0;
 
+	if (root->fs_info->closing > 1)
+		return 0;
+
 	if (wait) {
 		trans = btrfs_join_transaction(root, 1);
 		btrfs_set_trans_block_group(trans, inode);