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o Lock accesses to the page queues in vm_object_terminate().

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o Eliminate some unnecessary 64-bit arithmetic in vm_object_split().
This commit is contained in:
Alan Cox 2002-07-09 18:02:03 +00:00
parent 98479b041b
commit 56030358cb
1 changed files with 3 additions and 1 deletions
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4
sys/vm/vm_object.c
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@ -590,6 +590,7 @@ vm_object_terminate(vm_object_t object)
* remove them from the object.
*/
s = splvm();
vm_page_lock_queues();
while ((p = TAILQ_FIRST(&object->memq)) != NULL) {
KASSERT(!p->busy && (p->flags & PG_BUSY) == 0,
("vm_object_terminate: freeing busy page %p "
@ -603,6 +604,7 @@ vm_object_terminate(vm_object_t object)
vm_page_remove(p);
}
}
vm_page_unlock_queues();
splx(s);
/*
@ -1240,7 +1242,7 @@ vm_object_split(vm_map_entry_t entry)
new_object, shadow_list);
vm_object_clear_flag(source, OBJ_ONEMAPPING);
new_object->backing_object_offset =
orig_object->backing_object_offset + IDX_TO_OFF(offidxstart);
orig_object->backing_object_offset + offset;
new_object->backing_object = source;
source->shadow_count++;
source->generation++;