f2fs: drop FI_UPDATE_WRITE tag after f2fs_issue_flush

If we failed to issue flush in ->fsync, we need to keep FI_UPDATE_WRITE
flag to make sure triggering flush in next ->fsync.
Signed-off-by: NChao Yu <yuchao0@huawei.com>
Signed-off-by: NJaegeuk Kim <jaegeuk@kernel.org>

fs/f2fs/file.c

@@ -294,10 +294,12 @@ static int f2fs_do_sync_file(struct file *file, loff_t start, loff_t end,
 	remove_ino_entry(sbi, ino, APPEND_INO);
 	clear_inode_flag(inode, FI_APPEND_WRITE);
 flush_out:
-	remove_ino_entry(sbi, ino, UPDATE_INO);
-	clear_inode_flag(inode, FI_UPDATE_WRITE);
 	if (!atomic)
 		ret = f2fs_issue_flush(sbi);
+	if (!ret) {
+		remove_ino_entry(sbi, ino, UPDATE_INO);
+		clear_inode_flag(inode, FI_UPDATE_WRITE);
+	}
 	f2fs_update_time(sbi, REQ_TIME);
 out:
 	trace_f2fs_sync_file_exit(inode, need_cp, datasync, ret);