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Code Issues Releases Activity

Eliminate the last (direct) uses of vm_page_lookup() on the pte object.

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This commit is contained in:
Alan Cox 2003-08-24 08:07:06 +00:00
parent 3f51411974
commit d08ffe8451
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=119399
1 changed files with 3 additions and 18 deletions
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21
sys/amd64/amd64/pmap.c
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@ -904,10 +904,7 @@ _pmap_unwire_pte_hold(pmap_t pmap, vm_offset_t va, vm_page_t m)
/* We just released a PT, unhold the matching PD */
vm_page_t pdpg;
pdpg = vm_page_lookup(pmap->pm_pteobj, NUPDE +
((va >> PDPSHIFT) & (NUPDPE - 1)));
while (vm_page_sleep_if_busy(pdpg, FALSE, "pulook"))
vm_page_lock_queues();
pdpg = PHYS_TO_VM_PAGE(*pmap_pdpe(pmap, va));
vm_page_unhold(pdpg);
if (pdpg->hold_count == 0)
_pmap_unwire_pte_hold(pmap, va, pdpg);
@ -916,10 +913,7 @@ _pmap_unwire_pte_hold(pmap_t pmap, vm_offset_t va, vm_page_t m)
/* We just released a PD, unhold the matching PDP */
vm_page_t pdppg;
pdppg = vm_page_lookup(pmap->pm_pteobj, NUPDE + NUPDPE +
((va >> PML4SHIFT) & (NUPML4E - 1)));
while (vm_page_sleep_if_busy(pdppg, FALSE, "pulooK"))
vm_page_lock_queues();
pdppg = PHYS_TO_VM_PAGE(*pmap_pml4e(pmap, va));
vm_page_unhold(pdppg);
if (pdppg->hold_count == 0)
_pmap_unwire_pte_hold(pmap, va, pdppg);
@ -963,21 +957,12 @@ pmap_unwire_pte_hold(pmap_t pmap, vm_offset_t va, vm_page_t m)
static int
pmap_unuse_pt(pmap_t pmap, vm_offset_t va, vm_page_t mpte)
{
vm_pindex_t ptepindex;
if (va >= VM_MAXUSER_ADDRESS)
return 0;
if (mpte == NULL) {
ptepindex = pmap_pde_pindex(va);
if (pmap->pm_pteobj->root &&
pmap->pm_pteobj->root->pindex == ptepindex) {
mpte = pmap->pm_pteobj->root;
} else {
while ((mpte = vm_page_lookup(pmap->pm_pteobj, ptepindex)) != NULL &&
vm_page_sleep_if_busy(mpte, FALSE, "pulook"))
vm_page_lock_queues();
}
mpte = PHYS_TO_VM_PAGE(*pmap_pde(pmap, va));
}
return pmap_unwire_pte_hold(pmap, va, mpte);