1 files changed, 2 insertions, 0 deletions

diff --git a/fs/ext4/truncate.h b/fs/ext4/truncate.h
index 011ba6670d99..c70d06a383e2 100644
--- a/fs/ext4/truncate.h
+++ b/fs/ext4/truncate.h
@@ -10,8 +10,10 @@
  */
 static inline void ext4_truncate_failed_write(struct inode *inode)
 {
+        down_write(&EXT4_I(inode)->i_mmap_sem);
         truncate_inode_pages(inode->i_mapping, inode->i_size);
         ext4_truncate(inode);
+        up_write(&EXT4_I(inode)->i_mmap_sem);
 }
 
 /*