sys/geom/geom_subr.c

57 #include <geom/geom.h>
58 #include <geom/geom_dbg.h>
59 #include <geom/geom_int.h>
70 SDT_PROVIDER_DEFINE(geom);
165 	LIST_INIT(&mp->geom);
174 		LIST_FOREACH(gp, &mp2->geom, geom) {
195 	LIST_FOREACH(gp, &mp->geom, geom) {
207 		/* If the geom is withering, wait for it to finish. */
218 	if (!LIST_EMPTY(&mp->geom) && mp->destroy_geom == NULL) {
227 	LIST_FOREACH(gp, &mp->geom, geom) {
236 		gp = LIST_FIRST(&mp->geom);
240 		   ("Non-withering geom in class %s", mp->name));
296 			KASSERT(LIST_EMPTY(&mp->geom),
297 			    ("Unloaded class (%s) still has geom", mp->name));
329 		LIST_FOREACH(gp, &mp2->geom, geom) {
334 					if (cp->geom->class == mp &&
340 					g_wither_geom(cp->geom, ENXIO);
394 	LIST_INSERT_HEAD(&mp->geom, gp, geom);
425 	LIST_REMOVE(gp, geom);
432  * This function is called (repeatedly) until the geom has withered away.
494 		LIST_FOREACH_SAFE(gp, &mp->geom, geom, gp2) {
529 	    ("g_new_consumer on WITHERing geom(%s) (class %s)",
532 	    ("g_new_consumer on geom(%s) (class %s) without orphan",
536 	cp->geom = gp;
556 	gp = cp->geom;
582 		    cp->geom->attrchanged != NULL)
583 			cp->geom->attrchanged(cp, "GEOM::media");
591 			if (cp->geom->class == mp &&
611 	    ("new provider on geom(%s) without ->access (class %s)",
614 	    ("new provider on geom(%s) without ->start (class %s)",
617 	    ("new provider on WITHERing geom(%s) (class %s)",
631 	pp->geom = gp;
703 		gp = cp->geom;
714 			cp->geom->orphan(cp);
721 		gp = cp->geom;
734 			if (cp->geom->class == mp &&
774 		LIST_FOREACH(gp, &cp->geom, geom) {
805 	gp = pp->geom;
826  * sequence.  If we cannot assign rank to a geom because it's
829  * At some point we encounter our original geom and if we stil fail
864 			n = cp->provider->geom->rank;
878 		/* no rank to original geom means loop */
904 	error = redo_rank(cp->geom);
908 		redo_rank(cp->geom);
930 	if ((cp->geom->flags & G_GEOM_WITHER) ||
931 	    (pp->geom->flags & G_GEOM_WITHER) ||
934 	redo_rank(cp->geom);
960 	gp = pp->geom;
972 	KASSERT(gp->access != NULL, ("NULL geom->access"));
979 	if (cp->geom->spoiled != NULL && (cp->flags & G_CF_SPOILED) &&
988 	 * geom for the first time.  As a result, more than one thread may
993 	 * Note that if the geom's access method never drops the topology lock,
998 		    "%s: race on geom %s via provider %s and consumer of %s",
999 		    __func__, gp->name, pp->name, cp->geom->name);
1051 	    ("Access counts changed during geom->access"));
1079 		if ((cp->geom->flags & G_GEOM_WITHER) &&
1184 	gp = cp->geom;
1217 	    pp->geom->class->name, pp->geom->name, pp->name);
1223 		if (cp->geom->spoiled == NULL)
1225 		cp->geom->spoiled(cp);
1269 	    !(pp->geom->flags & G_GEOM_WITHER));
1370 		LIST_FOREACH(gp, &mp->geom, geom) {
1439 		gprintln("  class:    %s (%p)", cp->geom->class->name,
1440 		    cp->geom->class);
1441 		gprintln("  geom:     %s (%p)", cp->geom->name, cp->geom);
1472 		gprintln("  class:        %s (%p)", pp->geom->class->name,
1473 		    pp->geom->class);
1474 		gprintln("  geom:         %s (%p)", pp->geom->name, pp->geom);
1514 		gprintln("geom: %s (%p)", gp->name, gp);
1524 		gprintf("geom: %s (%p), rank=%d", gp->name, gp, gp->rank);
1554 	LIST_FOREACH(gp, &mp->geom, geom) {
1564 DB_SHOW_COMMAND(geom, db_show_geom)