diff options
| -rw-r--r-- | sys/amd64/amd64/pmap.c | 21 |
1 files changed, 7 insertions, 14 deletions
diff --git a/sys/amd64/amd64/pmap.c b/sys/amd64/amd64/pmap.c index 999331e2dd45..000e9450911c 100644 --- a/sys/amd64/amd64/pmap.c +++ b/sys/amd64/amd64/pmap.c @@ -1241,14 +1241,8 @@ pmap_allocpte(pmap_t pmap, vm_offset_t va) void pmap_release(pmap_t pmap) { - vm_object_t object; vm_page_t m; - object = pmap->pm_pteobj; - - KASSERT(object->ref_count == 1, - ("pmap_release: pteobj reference count %d != 1", - object->ref_count)); KASSERT(pmap->pm_stats.resident_count == 0, ("pmap_release: pmap resident count %ld != 0", pmap->pm_stats.resident_count)); @@ -1258,15 +1252,14 @@ pmap_release(pmap_t pmap) mtx_unlock_spin(&allpmaps_lock); vm_page_lock_queues(); - while ((m = TAILQ_FIRST(&object->memq)) != NULL) { - m->wire_count--; - atomic_subtract_int(&cnt.v_wire_count, 1); - vm_page_busy(m); - vm_page_free(m); - } - KASSERT(TAILQ_EMPTY(&object->memq), - ("pmap_release: leaking page table pages")); + m = PHYS_TO_VM_PAGE(pmap->pm_pml4[PML4PML4I]); + m->wire_count--; + atomic_subtract_int(&cnt.v_wire_count, 1); + vm_page_busy(m); + vm_page_free(m); vm_page_unlock_queues(); + KASSERT(TAILQ_EMPTY(&pmap->pm_pteobj->memq), + ("pmap_release: leaking page table pages")); } static int |