svn commit: r195040 - user/kmacy/releng_7_2_fcs/sys/amd64/amd64
Kip Macy
kmacy at FreeBSD.org
Fri Jun 26 06:11:40 UTC 2009
Author: kmacy
Date: Fri Jun 26 06:11:39 2009
New Revision: 195040
URL: http://svn.freebsd.org/changeset/base/195040
Log:
hold page queue lock across freeing of all pages in the list
Modified:
user/kmacy/releng_7_2_fcs/sys/amd64/amd64/pmap.c
Modified: user/kmacy/releng_7_2_fcs/sys/amd64/amd64/pmap.c
==============================================================================
--- user/kmacy/releng_7_2_fcs/sys/amd64/amd64/pmap.c Fri Jun 26 05:58:52 2009 (r195039)
+++ user/kmacy/releng_7_2_fcs/sys/amd64/amd64/pmap.c Fri Jun 26 06:11:39 2009 (r195040)
@@ -1248,12 +1248,16 @@ pmap_free_zero_pages(vm_page_t free)
{
vm_page_t m;
+ if (free == NULL)
+ return;
+ vm_page_lock_queues();
while (free != NULL) {
m = free;
free = m->right;
/* Preserve the page's PG_ZERO setting. */
- vm_page_free_toq(m);
+ vm_page_free_toq_locked(m);
}
+ vm_page_unlock_queues();
}
/*
@@ -1951,7 +1955,7 @@ pmap_collect(pmap_t locked_pmap, struct
pt_entry_t *pte, tpte;
pv_entry_t next_pv, pv;
vm_offset_t va;
- vm_page_t m, free;
+ vm_page_t m, free = NULL;
vm_page_lock_queues();
TAILQ_FOREACH(m, &vpq->pl, pageq) {
@@ -1981,7 +1985,6 @@ pmap_collect(pmap_t locked_pmap, struct
vm_page_flag_set(m, PG_REFERENCED);
if ((tpte & (PG_M | PG_RW)) == (PG_M | PG_RW))
vm_page_dirty(m);
- free = NULL;
pmap_unuse_pt(pmap, va, *pde, &free);
pmap_invalidate_page(pmap, va);
TAILQ_REMOVE(&m->md.pv_list, pv, pv_list);
@@ -1993,10 +1996,10 @@ pmap_collect(pmap_t locked_pmap, struct
free_pv_entry(pmap, pv, &free);
if (pmap != locked_pmap)
PMAP_UNLOCK(pmap);
- pmap_free_zero_pages(free);
}
vm_page_unlock(m);
}
+ pmap_free_zero_pages(free);
vm_page_unlock_queues();
}
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