1 files changed, 2 insertions, 1 deletions

diff --git a/fs/btrfs/extent-tree.c b/fs/btrfs/extent-tree.c
index f5be06a2462f..c9ee0e18bbdc 100644
--- a/fs/btrfs/extent-tree.c
+++ b/fs/btrfs/extent-tree.c
@@ -3340,7 +3340,8 @@ static int shrink_delalloc(struct btrfs_trans_handle *trans,
                 smp_mb();
                 nr_pages = min_t(unsigned long, nr_pages,
                        root->fs_info->delalloc_bytes >> PAGE_CACHE_SHIFT);
-                writeback_inodes_sb_nr_if_idle(root->fs_info->sb, nr_pages);
+                writeback_inodes_sb_nr_if_idle(root->fs_info->sb, nr_pages,
+                                                WB_REASON_FS_FREE_SPACE);
 
                 spin_lock(&space_info->lock);
                 if (reserved > space_info->bytes_reserved)