- if (lkb->lkb_ast_type & AST_COMP) {
- lkb->lkb_ast_type &= ~AST_COMP;
- type = AST_COMP;
- } else if (lkb->lkb_ast_type & AST_BAST) {
- lkb->lkb_ast_type &= ~AST_BAST;
- type = AST_BAST;
- bmode = lkb->lkb_bastmode;
+ removed = 0;
+ ret_type = 0;
+ ret_mode = 0;
+ do_bast = lkb->lkb_ast_type & AST_BAST;
+ do_cast = lkb->lkb_ast_type & AST_COMP;
+ bastmode = lkb->lkb_bastmode;
+ castmode = lkb->lkb_castmode;
+
+ /* when both are queued figure out which to do first and
+ switch first so the other goes in the next read */
+
+ if (do_cast && do_bast) {
+ if (lkb->lkb_ast_first == AST_COMP) {
+ ret_type = AST_COMP;
+ ret_mode = castmode;
+ lkb->lkb_ast_type &= ~AST_COMP;
+ lkb->lkb_ast_first = AST_BAST;
+ } else {
+ ret_type = AST_BAST;
+ ret_mode = bastmode;
+ lkb->lkb_ast_type &= ~AST_BAST;
+ lkb->lkb_ast_first = AST_COMP;
+ }
+ } else {
+ ret_type = lkb->lkb_ast_first;
+ ret_mode = (ret_type == AST_COMP) ? castmode : bastmode;
+ lkb->lkb_ast_type &= ~ret_type;
+ lkb->lkb_ast_first = 0;
+ }
+
+ /* if we're doing a bast but the bast is unnecessary, then
+ switch to do nothing or do a cast if that was needed next */
+
+ if ((ret_type == AST_BAST) &&
+ dlm_modes_compat(bastmode, lkb->lkb_castmode_done)) {
+ ret_type = 0;
+ ret_mode = 0;
+
+ if (do_cast) {
+ ret_type = AST_COMP;
+ ret_mode = castmode;
+ lkb->lkb_ast_type &= ~AST_COMP;
+ lkb->lkb_ast_first = 0;
+ }
+ }
+
+ if (lkb->lkb_ast_first != lkb->lkb_ast_type) {
+ log_print("device_read %x ast_first %x ast_type %x",
+ lkb->lkb_id, lkb->lkb_ast_first, lkb->lkb_ast_type);