Lines Matching defs:amap

1065  * => XXXCDC: need way to map in external amap?
1361 		 * can't extend a shared amap.  note: no need to lock amap to
1417 		 * can't extend a shared amap.  note: no need to lock amap to
1422 		 * merged with the previous entry which has an amap,
1423 		 * and the next entry also has an amap, we give up.
1426 		 * amap, new, amap -> give up second merge (single fwd extend)
1427 		 * amap, new, none -> double forward extend (extend again here)
1428 		 * none, new, amap -> double backward extend (done here)
1429 		 * uobj, new, amap -> single backward extend (done here)
1433 		 * backed by the same amap (ie, arefs is 2, "prev" and
1447 			 * Try to extend the amap of the previous entry to
1461 			 * Try to extend the amap of the *next* entry
1464 			 * didn't have an amap already otherwise we
1465 			 * wouldn't be checking here for an amap).  If
1479 			 * Pull the next entry's amap backwards to cover this
1585 			struct vm_amap *amap = amap_alloc(size, to_add,
1587 			if (__predict_false(amap == NULL)) {
1592 			new_entry->aref.ar_amap = amap;
2413 			 * and/or amap to ensure vm_page state does not
2514 		    "  detach %#jx: amap=%#jx, obj=%#jx, submap?=%jd",
2521 		 * drop reference to amap, if we've got one
2552  *    map (dummy means obj=NULL, amap=NULL, prot=VM_PROT_NONE)
3428 		struct vm_amap * const amap = entry->aref.ar_amap;
3441 		if (UVM_ET_ISOBJ(entry) && amap == NULL && uobj != NULL) {
3618 			 * found one.  amap creation actions do not need to
3957  * => never a need to flush amap layer since the anonymous memory has
3968 	struct vm_amap *amap;
4015 		amap = current->aref.ar_amap;	/* upper layer */
4020 		 * No amap cleaning necessary if:
4022 		 *	(1) There's no amap.
4027 		if (amap == NULL || (flags & (PGO_DEACTIVATE|PGO_FREE)) == 0)
4033 		amap_lock(amap, RW_WRITER);
4039 			KASSERT(anon->an_lock == amap->am_lock);
4078 				 * the amap, just deactivate the page.
4081 				if (amap_refs(amap) > 1)
4096 		amap_unlock(amap);
4483 	 * if the old_entry needs a new amap (due to prev fork)
4490 		/* get our own amap, clears needs_copy */
4520 	 * the new entry will need an amap.  it will either
4523 	 * amap).  can we defer this process until later
4525 	 * the amap now?
4527 	 * we must copy the amap now if any of the following
4529 	 * 1. the old entry has an amap and that amap is
4531 	 *    process is sharing the amap with another
4535 	 *    same amap with "needs_copy" set.  if the
4538 	 *    a new amap.   this is wrong because the
4539 	 *    parent is supposed to be sharing the old amap
4540 	 *    and the new amap will break that.
4542 	 * 2. if the old entry has an amap and a non-zero
4569 	 * allocated any needed amap (above).
4577 		 * the old mapping does not have an amap).
4586 		 * an amap and it is not already "needs_copy"...
5071 				/* amap unlocked below */
5256 		(*pr)(" - %p: %#lx->%#lx: obj=%p/%#llx, amap=%p/%d\n",