1 files changed, 8 insertions, 7 deletions

diff --git a/fs/btrfs/extent-tree.c b/fs/btrfs/extent-tree.c
index f79e477a378e..1aee51a9f3bf 100644
--- a/fs/btrfs/extent-tree.c
+++ b/fs/btrfs/extent-tree.c
@@ -757,12 +757,14 @@ static struct btrfs_space_info *__find_space_info(struct btrfs_fs_info *info,
 }
 
 static void add_pinned_bytes(struct btrfs_fs_info *fs_info,
-                             struct btrfs_ref *ref)
+                             struct btrfs_ref *ref, int sign)
 {
         struct btrfs_space_info *space_info;
-        s64 num_bytes = -ref->len;
+        s64 num_bytes;
         u64 flags;
 
+        ASSERT(sign == 1 || sign == -1);
+        num_bytes = sign * ref->len;
         if (ref->type == BTRFS_REF_METADATA) {
                 if (ref->tree_ref.root == BTRFS_CHUNK_TREE_OBJECTID)
                         flags = BTRFS_BLOCK_GROUP_SYSTEM;
@@ -2063,7 +2065,7 @@ int btrfs_inc_extent_ref(struct btrfs_trans_handle *trans,
         btrfs_ref_tree_mod(fs_info, generic_ref);
 
         if (ret == 0 && old_ref_mod < 0 && new_ref_mod >= 0)
-                add_pinned_bytes(fs_info, generic_ref);
+                add_pinned_bytes(fs_info, generic_ref, -1);
 
         return ret;
 }
@@ -3882,8 +3884,7 @@ static int create_space_info(struct btrfs_fs_info *info, u64 flags)
                                     info->space_info_kobj, "%s",
                                     alloc_name(space_info->flags));
         if (ret) {
-                percpu_counter_destroy(&space_info->total_bytes_pinned);
-                kfree(space_info);
+                kobject_put(&space_info->kobj);
                 return ret;
         }
 
@@ -7190,7 +7191,7 @@ void btrfs_free_tree_block(struct btrfs_trans_handle *trans,
         }
 out:
         if (pin)
-                add_pinned_bytes(fs_info, &generic_ref);
+                add_pinned_bytes(fs_info, &generic_ref, 1);
 
         if (last_ref) {
                 /*
@@ -7238,7 +7239,7 @@ int btrfs_free_extent(struct btrfs_trans_handle *trans, struct btrfs_ref *ref)
                 btrfs_ref_tree_mod(fs_info, ref);
 
         if (ret == 0 && old_ref_mod >= 0 && new_ref_mod < 0)
-                add_pinned_bytes(fs_info, ref);
+                add_pinned_bytes(fs_info, ref, 1);
 
         return ret;
 }