Follow clang format coding style

Author: RoyWFHuang

file.c

@@ -413,8 +413,8 @@ static ssize_t simplefs_write(struct file *file,
         size_t bytes_to_write =
             min_t(size_t, len, SIMPLEFS_BLOCK_SIZE - pos % SIMPLEFS_BLOCK_SIZE);
 
-        if (copy_from_user(bh_data->b_data + pos % SIMPLEFS_BLOCK_SIZE, buf + bytes_write,
-                           bytes_to_write)) {
+        if (copy_from_user(bh_data->b_data + pos % SIMPLEFS_BLOCK_SIZE,
+                           buf + bytes_write, bytes_to_write)) {
             brelse(bh_data);
             bytes_write = -EFAULT;
             break;

mkfs.c

@@ -26,7 +26,7 @@ _Static_assert(sizeof(struct superblock) == SIMPLEFS_BLOCK_SIZE);
  *
  * Return the result of n / d, rounded up to the nearest integer.
  */
-#define DIV_ROUND_UP(n, d) (((n) + (d) -1) / (d))
+#define DIV_ROUND_UP(n, d) (((n) + (d) - 1) / (d))
 
 static struct superblock *write_superblock(int fd, struct stat *fstats)
 {