diff --git a/file.c b/file.c
index ad6838a6eb94..c03f4267f030 100644
--- a/file.c
+++ b/file.c
@@ -155,12 +155,17 @@ int __exfat_truncate(struct inode *inode, loff_t new_size)
 	if (ei->type == TYPE_FILE)
 		ei->attr |= ATTR_ARCHIVE;
 
-	/* update the directory entry */
-#if LINUX_VERSION_CODE >= KERNEL_VERSION(4, 10, 0)
-	inode->i_mtime = current_time(inode);
-#else
-	inode->i_mtime = CURRENT_TIME_SEC;
-#endif
+	/*
+	 * update the directory entry
+	 *
+	 * If the directory entry is updated by mark_inode_dirty(), the
+	 * directory entry will be written after a writeback cycle of
+	 * updating the bitmap/FAT, which may result in clusters being
+	 * freed but referenced by the directory entry in the event of a
+	 * sudden power failure.
+	 * __exfat_write_inode() is called for directory entry, bitmap
+	 * and FAT to be written in a same writeback.
+	 */
 	if (__exfat_write_inode(inode, inode_needs_sync(inode)))
 		return -EIO;
 
@@ -217,16 +222,6 @@ void exfat_truncate(struct inode *inode, loff_t size)
 	if (err)
 		goto write_size;
 
-#if LINUX_VERSION_CODE >= KERNEL_VERSION(4, 10, 0)
-	inode->i_ctime = inode->i_mtime = current_time(inode);
-#else
-	inode->i_ctime = inode->i_mtime = CURRENT_TIME_SEC;
-#endif
-	if (IS_DIRSYNC(inode))
-		exfat_sync_inode(inode);
-	else
-		mark_inode_dirty(inode);
-
 	inode->i_blocks = ((i_size_read(inode) + (sbi->cluster_size - 1)) &
 		~((loff_t)sbi->cluster_size - 1)) >> inode->i_blkbits;
 write_size:
@@ -342,16 +337,12 @@ int exfat_setattr(struct dentry *dentry, struct iattr *attr)
 			attr->ia_valid &= ~ATTR_MODE;
 	}
 
-	if (attr->ia_valid & ATTR_SIZE) {
-		error = exfat_block_truncate_page(inode, attr->ia_size);
-		if (error)
-			goto out;
-
-		down_write(&EXFAT_I(inode)->truncate_lock);
-		truncate_setsize(inode, attr->ia_size);
-		exfat_truncate(inode, attr->ia_size);
-		up_write(&EXFAT_I(inode)->truncate_lock);
-	}
+	if (attr->ia_valid & ATTR_SIZE)
+#if LINUX_VERSION_CODE >= KERNEL_VERSION(4, 10, 0)
+		inode->i_mtime = inode->i_ctime = current_time(inode);
+#else
+		inode->i_mtime = inode->i_ctime = CURRENT_TIME_SEC;
+#endif
 
 #if LINUX_VERSION_CODE >= KERNEL_VERSION(5, 12, 0)
 	setattr_copy(&init_user_ns, inode, attr);
@@ -359,8 +350,22 @@ int exfat_setattr(struct dentry *dentry, struct iattr *attr)
 	setattr_copy(inode, attr);
 #endif
 	exfat_truncate_atime(&inode->i_atime);
-	mark_inode_dirty(inode);
 
+	if (attr->ia_valid & ATTR_SIZE) {
+		error = exfat_block_truncate_page(inode, attr->ia_size);
+		if (error)
+			goto out;
+
+		down_write(&EXFAT_I(inode)->truncate_lock);
+		truncate_setsize(inode, attr->ia_size);
+		/*
+		 * __exfat_write_inode() is called from exfat_truncate(), inode
+		 * is already written by it, so mark_inode_dirty() is unneeded.
+		 */
+		exfat_truncate(inode, attr->ia_size);
+		up_write(&EXFAT_I(inode)->truncate_lock);
+	} else
+		mark_inode_dirty(inode);
 out:
 	return error;
 }
diff --git a/inode.c b/inode.c
index 3c68a8930ad9..8cbc49835902 100644
--- a/inode.c
+++ b/inode.c
@@ -379,6 +379,11 @@ static void exfat_write_failed(struct address_space *mapping, loff_t to)
 
 	if (to > i_size_read(inode)) {
 		truncate_pagecache(inode, i_size_read(inode));
+#if LINUX_VERSION_CODE >= KERNEL_VERSION(4, 10, 0)
+		inode->i_mtime = inode->i_ctime = current_time(inode);
+#else
+		inode->i_mtime = inode->i_ctime = CURRENT_TIME_SEC;
+#endif
 		exfat_truncate(inode, EXFAT_I(inode)->i_size_aligned);
 	}
 }