Author: nwhitehorn
Date: Sun Mar 18 13:22:42 2012
New Revision: 233117
URL: http://svn.freebsd.org/changeset/base/233117
Log:
Remove acquisition of VM page queues lock from pmap_protect(). Any actual
manipulation of the pvo_vlink and pvo_olink entries is already protected
by the table lock, so most remaining instances of the acquisition of the
page queues lock can likely be replaced with the table lock, or removed
if the table lock is already held.
Reviewed by: alc
Modified:
head/sys/powerpc/aim/mmu_oea64.c
Modified: head/sys/powerpc/aim/mmu_oea64.c
==============================================================================
--- head/sys/powerpc/aim/mmu_oea64.c Sun Mar 18 13:02:56 2012
(r233116)
+++ head/sys/powerpc/aim/mmu_oea64.c Sun Mar 18 13:22:42 2012
(r233117)
@@ -1965,7 +1965,6 @@ moea64_protect(mmu_t mmu, pmap_t pm, vm_
return;
}
- vm_page_lock_queues();
PMAP_LOCK(pm);
if ((eva - sva)/PAGE_SIZE < pm->pm_stats.resident_count) {
for (; sva < eva; sva += PAGE_SIZE) {
@@ -1980,7 +1979,6 @@ moea64_protect(mmu_t mmu, pmap_t pm, vm_
moea64_pvo_protect(mmu, pm, pvo, prot);
}
}
- vm_page_unlock_queues();
PMAP_UNLOCK(pm);
}
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