svn commit: r206955 - user/kmacy/head_page_lock_2/sys/amd64/amd64
Kip Macy
kmacy at FreeBSD.org
Tue Apr 20 23:36:01 UTC 2010
Author: kmacy
Date: Tue Apr 20 23:36:01 2010
New Revision: 206955
URL: http://svn.freebsd.org/changeset/base/206955
Log:
drop page lock if we leave the pmap copy loop
Modified:
user/kmacy/head_page_lock_2/sys/amd64/amd64/pmap.c
Modified: user/kmacy/head_page_lock_2/sys/amd64/amd64/pmap.c
==============================================================================
--- user/kmacy/head_page_lock_2/sys/amd64/amd64/pmap.c Tue Apr 20 23:35:20 2010 (r206954)
+++ user/kmacy/head_page_lock_2/sys/amd64/amd64/pmap.c Tue Apr 20 23:36:01 2010 (r206955)
@@ -4131,8 +4131,10 @@ pmap_copy(pmap_t dst_pmap, pmap_t src_pm
continue;
dstmpde = pmap_allocpde(dst_pmap, pa, addr, M_NOWAIT);
- if (dstmpde == NULL)
+ if (dstmpde == NULL) {
+ PA_UNLOCK(pa);
break;
+ }
pde = (pd_entry_t *)
PHYS_TO_DMAP(VM_PAGE_TO_PHYS(dstmpde));
pde = &pde[pmap_pde_index(addr)];
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