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Remove acquisition of VM page queues lock from pmap_protect(). Any actual

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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
This commit is contained in:
Nathan Whitehorn 2012-03-18 13:22:42 +00:00
parent bfca216eb9
commit 07b638a98e
1 changed files with 0 additions and 2 deletions
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2
sys/powerpc/aim/mmu_oea64.c
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@ -1965,7 +1965,6 @@ moea64_protect(mmu_t mmu, pmap_t pm, vm_offset_t sva, vm_offset_t eva,
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_offset_t sva, vm_offset_t eva,
moea64_pvo_protect(mmu, pm, pvo, prot);
}
}
vm_page_unlock_queues();
PMAP_UNLOCK(pm);
}