+ /* check if we need a larger metadata buffer */
+ if (super->next_buf)
+ buf_len = super->next_len;
+ else
+ buf_len = super->len;
+
+ if (__le32_to_cpu(mpb->mpb_size) + len > buf_len) {
+ /* ok we need a larger buf than what is currently allocated
+ * if this allocation fails process_update will notice that
+ * ->next_len is set and ->next_buf is NULL
+ */
+ buf_len = ROUND_UP(__le32_to_cpu(mpb->mpb_size) + len, 512);
+ if (super->next_buf)
+ free(super->next_buf);
+
+ super->next_len = buf_len;
+ if (posix_memalign(&super->next_buf, buf_len, 512) != 0)
+ super->next_buf = NULL;
+ }
+}
+
+/* must be called while manager is quiesced */
+static void imsm_delete(struct intel_super *super, struct dl **dlp, int index)
+{
+ struct imsm_super *mpb = super->anchor;
+ struct dl *iter;
+ struct imsm_dev *dev;
+ struct imsm_map *map;
+ int i, j, num_members;
+ __u32 ord;
+
+ dprintf("%s: deleting device[%d] from imsm_super\n",
+ __func__, index);
+
+ /* shift all indexes down one */
+ for (iter = super->disks; iter; iter = iter->next)
+ if (iter->index > index)
+ iter->index--;
+
+ for (i = 0; i < mpb->num_raid_devs; i++) {
+ dev = get_imsm_dev(super, i);
+ map = get_imsm_map(dev, 0);
+ num_members = map->num_members;
+ for (j = 0; j < num_members; j++) {
+ /* update ord entries being careful not to propagate
+ * ord-flags to the first map
+ */
+ ord = get_imsm_ord_tbl_ent(dev, j);
+
+ if (ord_to_idx(ord) <= index)
+ continue;
+
+ map = get_imsm_map(dev, 0);
+ set_imsm_ord_tbl_ent(map, j, ord_to_idx(ord - 1));
+ map = get_imsm_map(dev, 1);
+ if (map)
+ set_imsm_ord_tbl_ent(map, j, ord - 1);
+ }
+ }
+
+ mpb->num_disks--;
+ super->updates_pending++;
+ if (*dlp) {
+ struct dl *dl = *dlp;
+
+ *dlp = (*dlp)->next;
+ __free_imsm_disk(dl);
+ }