1 files changed, 23 insertions, 6 deletions

diff --git a/fs/btrfs/free-space-cache.c b/fs/btrfs/free-space-cache.c
index 41ac927401d..79c16a68a2b 100644
--- a/fs/btrfs/free-space-cache.c
+++ b/fs/btrfs/free-space-cache.c
@@ -2472,9 +2472,19 @@ int btrfs_trim_block_group(struct btrfs_block_group_cache *block_group,
                 spin_unlock(&ctl->tree_lock);
 
                 if (bytes >= minlen) {
-                        int update_ret;
-                        update_ret = btrfs_update_reserved_bytes(block_group,
-                                                                 bytes, 1, 1);
+                        struct btrfs_space_info *space_info;
+                        int update = 0;
+
+                        space_info = block_group->space_info;
+                        spin_lock(&space_info->lock);
+                        spin_lock(&block_group->lock);
+                        if (!block_group->ro) {
+                                block_group->reserved += bytes;
+                                space_info->bytes_reserved += bytes;
+                                update = 1;
+                        }
+                        spin_unlock(&block_group->lock);
+                        spin_unlock(&space_info->lock);
 
                         ret = btrfs_error_discard_extent(fs_info->extent_root,
                                                          start,
@@ -2482,9 +2492,16 @@ int btrfs_trim_block_group(struct btrfs_block_group_cache *block_group,
                                                          &actually_trimmed);
 
                         btrfs_add_free_space(block_group, start, bytes);
-                        if (!update_ret)
-                                btrfs_update_reserved_bytes(block_group,
-                                                            bytes, 0, 1);
+                        if (update) {
+                                spin_lock(&space_info->lock);
+                                spin_lock(&block_group->lock);
+                                if (block_group->ro)
+                                        space_info->bytes_readonly += bytes;
+                                block_group->reserved -= bytes;
+                                space_info->bytes_reserved -= bytes;
+                                spin_unlock(&space_info->lock);
+                                spin_unlock(&block_group->lock);
+                        }
 
                         if (ret)
                                 break;