dm vdo index: fix various small nits

Add braces around multi-line while loops and if statements. Also
remove excess newlines.
Signed-off-by: Mike Snitzer <snitzer@kernel.org>
Signed-off-by: Chung Chung <cchung@redhat.com>
Signed-off-by: Matthew Sakai <msakai@redhat.com>

drivers/md/dm-vdo/index-layout.c

@@ -386,9 +386,10 @@ static void define_sub_index_nonce(struct index_layout *layout)
 	encode_u64_le(buffer, &offset, sil->sub_index.start_block);
 	encode_u16_le(buffer, &offset, 0);
 	sil->nonce = generate_secondary_nonce(primary_nonce, buffer, sizeof(buffer));
-	if (sil->nonce == 0)
+	if (sil->nonce == 0) {
 		sil->nonce = generate_secondary_nonce(~primary_nonce + 1, buffer,
 						      sizeof(buffer));
+	}
 }
 
 static void setup_sub_index(struct index_layout *layout, u64 start_block,
@@ -651,10 +652,11 @@ static int discard_index_state_data(struct index_layout *layout)
 			saved_result = result;
 	}
 
-	if (saved_result != UDS_SUCCESS)
+	if (saved_result != UDS_SUCCESS) {
 		return uds_log_error_strerror(result,
 					      "%s: cannot destroy all index saves",
 					      __func__);
+	}
 
 	return UDS_SUCCESS;
 }
@@ -1242,9 +1244,7 @@ static int __must_check read_super_block_data(struct buffered_reader *reader,
 					      "unknown superblock magic label");
 
 	if ((super->version < SUPER_VERSION_MINIMUM) ||
-	    (super->version == 4) ||
-	    (super->version == 5) ||
-	    (super->version == 6) ||
+	    (super->version == 4) || (super->version == 5) || (super->version == 6) ||
 	    (super->version > SUPER_VERSION_MAXIMUM)) {
 		return uds_log_error_strerror(UDS_UNSUPPORTED_VERSION,
 					      "unknown superblock version number %u",

drivers/md/dm-vdo/index-page-map.c

@@ -100,8 +100,7 @@ void uds_get_list_number_bounds(const struct index_page_map *map, u32 chapter_nu
 	u32 slot = chapter_number * map->entries_per_chapter;
 
 	*lowest_list = ((index_page_number == 0) ?
-			0 :
-			map->entries[slot + index_page_number - 1] + 1);
+			0 : map->entries[slot + index_page_number - 1] + 1);
 	*highest_list = ((index_page_number < map->entries_per_chapter) ?
 			 map->entries[slot + index_page_number] :
 			 map->geometry->delta_lists_per_chapter - 1);

drivers/md/dm-vdo/index-session.c

@@ -392,9 +392,10 @@ int uds_open_index(enum uds_open_index_type open_type,
 static void wait_for_no_requests_in_progress(struct uds_index_session *index_session)
 {
 	uds_lock_mutex(&index_session->request_mutex);
-	while (index_session->request_count > 0)
+	while (index_session->request_count > 0) {
 		uds_wait_cond(&index_session->request_cond,
 			      &index_session->request_mutex);
+	}
 	uds_unlock_mutex(&index_session->request_mutex);
 }
 
@@ -619,9 +620,10 @@ int uds_close_index(struct uds_index_session *index_session)
 	/* Wait for any current index state change to complete. */
 	uds_lock_mutex(&index_session->request_mutex);
 	while ((index_session->state & IS_FLAG_WAITING) ||
-	       (index_session->state & IS_FLAG_CLOSING))
+	       (index_session->state & IS_FLAG_CLOSING)) {
 		uds_wait_cond(&index_session->request_cond,
 			      &index_session->request_mutex);
+	}
 
 	if (index_session->state & IS_FLAG_SUSPENDED) {
 		uds_log_info("Index session is suspended");
@@ -660,9 +662,10 @@ int uds_destroy_index_session(struct uds_index_session *index_session)
 	/* Wait for any current index state change to complete. */
 	uds_lock_mutex(&index_session->request_mutex);
 	while ((index_session->state & IS_FLAG_WAITING) ||
-	       (index_session->state & IS_FLAG_CLOSING))
+	       (index_session->state & IS_FLAG_CLOSING)) {
 		uds_wait_cond(&index_session->request_cond,
 			      &index_session->request_mutex);
+	}
 
 	if (index_session->state & IS_FLAG_DESTROYING) {
 		uds_unlock_mutex(&index_session->request_mutex);
@@ -686,9 +689,10 @@ int uds_destroy_index_session(struct uds_index_session *index_session)
 
 		/* Wait until the load exits before proceeding. */
 		uds_lock_mutex(&index_session->request_mutex);
-		while (index_session->state & IS_FLAG_LOADING)
+		while (index_session->state & IS_FLAG_LOADING) {
 			uds_wait_cond(&index_session->request_cond,
 				      &index_session->request_mutex);
+		}
 		uds_unlock_mutex(&index_session->request_mutex);
 	}
 

drivers/md/dm-vdo/index.c

@@ -1330,8 +1330,7 @@ int uds_save_index(struct uds_index *index)
 	uds_wait_for_idle_index(index);
 	index->prev_save = index->last_save;
 	index->last_save = ((index->newest_virtual_chapter == 0) ?
-			    NO_LAST_SAVE :
-			    index->newest_virtual_chapter - 1);
+			    NO_LAST_SAVE : index->newest_virtual_chapter - 1);
 	uds_log_info("beginning save (vcn %llu)", (unsigned long long) index->last_save);
 
 	result = uds_save_index_state(index->layout, index);