X-Git-Url: http://demsky.eecs.uci.edu/git/?a=blobdiff_plain;f=fs%2Fext4%2Ftruncate.h;h=c70d06a383e28819cc556f1027ea118272e5f738;hb=ab664b93981c79d613aacd0ac1c85cf96cada44a;hp=011ba6670d990285f6f61b56ea3fb8b421b70e59;hpb=107d3e535874dc06e9bf0282d9bd707f7595eafe;p=firefly-linux-kernel-4.4.55.git

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);
 }
 
 /*