1 files changed, 1 insertions, 0 deletions

diff --git a/fs/inode.c b/fs/inode.c
index b6726f644530..0487ddba1397 100644
--- a/fs/inode.c
+++ b/fs/inode.c
@@ -166,6 +166,7 @@ static struct inode *alloc_inode(struct super_block *sb)
                 mapping_set_gfp_mask(mapping, GFP_HIGHUSER_PAGECACHE);
                 mapping->assoc_mapping = NULL;
                 mapping->backing_dev_info = &default_backing_dev_info;
+                mapping->writeback_index = 0;
 
                 /*
                  * If the block_device provides a backing_dev_info for client