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In the PGO_FREE case of uvm_map_clean()'s amap cleaning, skip wired

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pages.

XXX This should be handled better in the future, probably by marking the
XXX page as released, and making uvm_pageunwire() free the page when
XXX the wire count on a released page reaches zero.
This commit is contained in:
thorpej 1999-07-07 21:04:22 +00:00
parent 974de8f7f8
commit 62dcdc109b
1 changed files with 6 additions and 1 deletions
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7
sys/uvm/uvm_map.c
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@ -1,4 +1,4 @@
/* $NetBSD: uvm_map.c,v 1.61 1999/07/07 06:02:22 thorpej Exp $ */
/* $NetBSD: uvm_map.c,v 1.62 1999/07/07 21:04:22 thorpej Exp $ */
/*
* Copyright (c) 1997 Charles D. Cranor and Washington University.
@ -2520,6 +2520,11 @@ uvm_map_clean(map, start, end, flags)
continue;
case PGO_FREE:
/* XXX skip the page if it's wired */
if (pg->wire_count != 0) {
simple_unlock(&anon->an_lock);
continue;
}
amap_unadd(&entry->aref, offset);
refs = --anon->an_ref;
simple_unlock(&anon->an_lock);