Btrfs: Fix extent_map and extent_state leaks by flushing lrus on FS unmount
Signed-off-by: Chris Mason <chris.mason@oracle.com>
diff --git a/fs/btrfs/disk-io.c b/fs/btrfs/disk-io.c
index 4338b00..2785641 100644
--- a/fs/btrfs/disk-io.c
+++ b/fs/btrfs/disk-io.c
@@ -765,8 +765,18 @@
btrfs_free_block_groups(root->fs_info);
del_fs_roots(fs_info);
+
+ filemap_write_and_wait(fs_info->btree_inode->i_mapping);
+
+ extent_map_tree_empty_lru(&fs_info->free_space_cache);
+ extent_map_tree_empty_lru(&fs_info->block_group_cache);
+ extent_map_tree_empty_lru(&fs_info->pinned_extents);
+ extent_map_tree_empty_lru(&fs_info->pending_del);
+ extent_map_tree_empty_lru(&fs_info->extent_ins);
extent_map_tree_empty_lru(&BTRFS_I(fs_info->btree_inode)->extent_tree);
+
truncate_inode_pages(fs_info->btree_inode->i_mapping, 0);
+
iput(fs_info->btree_inode);
#if 0
while(!list_empty(&fs_info->hashers)) {