reiserfs: balance_leaf refactor, format balance_leaf_insert_right

Reformat balance_leaf_insert_right to adhere to CodingStyle.
Signed-off-by: Jeff Mahoney <jeffm@suse.com>
Signed-off-by: Jan Kara <jack@suse.cz>

fs/reiserfs/do_balan.c

@@ -626,71 +626,84 @@ static void balance_leaf_insert_right(struct tree_balance *tb,
 	struct buffer_head *tbS0 = PATH_PLAST_BUFFER(tb->tb_path);
 	int n = B_NR_ITEMS(tbS0);
 	struct buffer_info bi;
-	int ret_val;
-			if (n - tb->rnum[0] < tb->item_pos) {	/* new item or its part falls to R[0] */
-				if (tb->item_pos == n - tb->rnum[0] + 1 && tb->rbytes != -1) {	/* part of new item falls into R[0] */
-					loff_t old_key_comp, old_len, r_zeroes_number;
-					const char *r_body;
-					int version;
-					loff_t offset;
+	int ret;
 
-					leaf_shift_right(tb, tb->rnum[0] - 1, -1);
+	/* new item or part of it doesn't fall into R[0] */
+	if (n - tb->rnum[0] >= tb->item_pos) {
+		leaf_shift_right(tb, tb->rnum[0], tb->rbytes);
+		return;
+	}
 
-					version = ih_version(ih);
-					/* Remember key component and item length */
-					old_key_comp = le_ih_k_offset(ih);
-					old_len = ih_item_len(ih);
+	/* new item or its part falls to R[0] */
 
-					/* Calculate key component and item length to insert into R[0] */
-					offset = le_ih_k_offset(ih) + ((old_len - tb->rbytes) << (is_indirect_le_ih(ih) ? tb->tb_sb->s_blocksize_bits - UNFM_P_SHIFT : 0));
-					set_le_ih_k_offset(ih, offset);
-					put_ih_item_len(ih, tb->rbytes);
-					/* Insert part of the item into R[0] */
-					buffer_info_init_right(tb, &bi);
-					if ((old_len - tb->rbytes) > tb->zeroes_num) {
-						r_zeroes_number = 0;
-						r_body = body + (old_len - tb->rbytes) - tb->zeroes_num;
-					} else {
-						r_body = body;
-						r_zeroes_number = tb->zeroes_num - (old_len - tb->rbytes);
-						tb->zeroes_num -= r_zeroes_number;
-					}
+	/* part of new item falls into R[0] */
+	if (tb->item_pos == n - tb->rnum[0] + 1 && tb->rbytes != -1) {
+		loff_t old_key_comp, old_len, r_zeroes_number;
+		const char *r_body;
+		int version, shift;
+		loff_t offset;
+
+		leaf_shift_right(tb, tb->rnum[0] - 1, -1);
 
-					leaf_insert_into_buf(&bi, 0, ih, r_body,
-							     r_zeroes_number);
+		version = ih_version(ih);
 
-					/* Replace right delimiting key by first key in R[0] */
-					replace_key(tb, tb->CFR[0], tb->rkey[0],
-						    tb->R[0], 0);
+		/* Remember key component and item length */
+		old_key_comp = le_ih_k_offset(ih);
+		old_len = ih_item_len(ih);
 
-					/* Calculate key component and item length to insert into S[0] */
-					set_le_ih_k_offset(ih, old_key_comp);
-					put_ih_item_len(ih, old_len - tb->rbytes);
+		/*
+		 * Calculate key component and item length to insert
+		 * into R[0]
+		 */
+		shift = 0;
+		if (is_indirect_le_ih(ih))
+			shift = tb->tb_sb->s_blocksize_bits - UNFM_P_SHIFT;
+		offset = le_ih_k_offset(ih) + ((old_len - tb->rbytes) << shift);
+		set_le_ih_k_offset(ih, offset);
+		put_ih_item_len(ih, tb->rbytes);
+
+		/* Insert part of the item into R[0] */
+		buffer_info_init_right(tb, &bi);
+		if ((old_len - tb->rbytes) > tb->zeroes_num) {
+			r_zeroes_number = 0;
+			r_body = body + (old_len - tb->rbytes) - tb->zeroes_num;
+		} else {
+			r_body = body;
+			r_zeroes_number = tb->zeroes_num -
+					  (old_len - tb->rbytes);
+			tb->zeroes_num -= r_zeroes_number;
+		}
 
-					tb->insert_size[0] -= tb->rbytes;
+		leaf_insert_into_buf(&bi, 0, ih, r_body, r_zeroes_number);
 
-				} else {	/* whole new item falls into R[0] */
+		/* Replace right delimiting key by first key in R[0] */
+		replace_key(tb, tb->CFR[0], tb->rkey[0], tb->R[0], 0);
 
-					/* Shift rnum[0]-1 items to R[0] */
-					ret_val = leaf_shift_right(tb, tb->rnum[0] - 1, tb->rbytes);
-					/* Insert new item into R[0] */
-					buffer_info_init_right(tb, &bi);
-					leaf_insert_into_buf(&bi, tb->item_pos - n + tb->rnum[0] - 1,
-							     ih, body, tb->zeroes_num);
+		/*
+		 * Calculate key component and item length to
+		 * insert into S[0]
+		 */
+		set_le_ih_k_offset(ih, old_key_comp);
+		put_ih_item_len(ih, old_len - tb->rbytes);
 
-					if (tb->item_pos - n + tb->rnum[0] - 1 == 0) {
-						replace_key(tb, tb->CFR[0],
-							    tb->rkey[0],
-							    tb->R[0], 0);
+		tb->insert_size[0] -= tb->rbytes;
 
-					}
-					tb->zeroes_num = tb->insert_size[0] = 0;
-				}
-			} else {	/* new item or part of it doesn't fall into R[0] */
+	} else {
+		/* whole new item falls into R[0] */
 
-				leaf_shift_right(tb, tb->rnum[0], tb->rbytes);
-			}
+		/* Shift rnum[0]-1 items to R[0] */
+		ret = leaf_shift_right(tb, tb->rnum[0] - 1, tb->rbytes);
+
+		/* Insert new item into R[0] */
+		buffer_info_init_right(tb, &bi);
+		leaf_insert_into_buf(&bi, tb->item_pos - n + tb->rnum[0] - 1,
+				     ih, body, tb->zeroes_num);
 
+		if (tb->item_pos - n + tb->rnum[0] - 1 == 0)
+			replace_key(tb, tb->CFR[0], tb->rkey[0], tb->R[0], 0);
+
+		tb->zeroes_num = tb->insert_size[0] = 0;
+	}
 }
 
 static void balance_leaf_paste_right(struct tree_balance *tb,