1 files changed, 2 insertions, 0 deletions

diff --git a/fs/block_dev.c b/fs/block_dev.c
index 889287019599..bc39b18cf3d0 100644
--- a/fs/block_dev.c
+++ b/fs/block_dev.c
@@ -56,9 +56,11 @@ static void bdev_inode_switch_bdi(struct inode *inode,
                         struct backing_dev_info *dst)
 {
         spin_lock(&inode_lock);
+        spin_lock(&inode->i_lock);
         inode->i_data.backing_dev_info = dst;
         if (inode->i_state & I_DIRTY)
                 list_move(&inode->i_wb_list, &dst->wb.b_dirty);
+        spin_unlock(&inode->i_lock);
         spin_unlock(&inode_lock);
 }