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Acquire the pte object's mutex when performing vm_page_grab(). Note: It is

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my long-term objective to eliminate the pte object.  In the near term, this
does, however, enable the addition of some vm object locking assertions.
This commit is contained in:
Alan Cox 2003-08-17 22:27:30 +00:00
parent df7bdd0ae9
commit 90ca070d69
1 changed files with 4 additions and 0 deletions
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4
sys/i386/i386/pmap.c
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@ -1100,6 +1100,7 @@ pmap_pinit(pmap)
* allocate the page directory page(s)
*/
for (i = 0; i < NPGPTD; i++) {
VM_OBJECT_LOCK(pmap->pm_pteobj);
ptdpg[i] = vm_page_grab(pmap->pm_pteobj, PTDPTDI + i,
VM_ALLOC_NORMAL | VM_ALLOC_RETRY | VM_ALLOC_WIRED |
VM_ALLOC_ZERO);
@ -1107,6 +1108,7 @@ pmap_pinit(pmap)
vm_page_flag_clear(ptdpg[i], PG_BUSY);
ptdpg[i]->valid = VM_PAGE_BITS_ALL;
vm_page_unlock_queues();
VM_OBJECT_UNLOCK(pmap->pm_pteobj);
}
pmap_qenter((vm_offset_t)pmap->pm_pdir, ptdpg, NPGPTD);
@ -1169,6 +1171,7 @@ _pmap_allocpte(pmap, ptepindex)
/*
* Find or fabricate a new pagetable page
*/
VM_OBJECT_LOCK(pmap->pm_pteobj);
m = vm_page_grab(pmap->pm_pteobj, ptepindex,
VM_ALLOC_WIRED | VM_ALLOC_ZERO | VM_ALLOC_RETRY);
@ -1209,6 +1212,7 @@ _pmap_allocpte(pmap, ptepindex)
vm_page_flag_clear(m, PG_ZERO);
vm_page_wakeup(m);
vm_page_unlock_queues();
VM_OBJECT_UNLOCK(pmap->pm_pteobj);
return m;
}