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Increase the scope of the page queues lock in phys_pager_getpages().

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This commit is contained in:
Alan Cox 2002-12-27 06:09:56 +00:00
parent ce4fd6b4c5
commit 969da54c3a
1 changed files with 7 additions and 4 deletions
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11
sys/vm/phys_pager.c
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@ -139,17 +139,19 @@ phys_pager_getpages(vm_object_t object, vm_page_t *m, int count, int reqpage)
int i, s;
s = splvm();
vm_page_lock_queues();
/*
* Fill as many pages as vm_fault has allocated for us.
*/
for (i = 0; i < count; i++) {
if ((m[i]->flags & PG_ZERO) == 0)
if ((m[i]->flags & PG_ZERO) == 0) {
vm_page_unlock_queues();
pmap_zero_page(m[i]);
/* Switch off pv_entries */
vm_page_lock_queues();
vm_page_lock_queues();
}
vm_page_flag_set(m[i], PG_ZERO);
/* Switch off pv_entries */
vm_page_unmanage(m[i]);
vm_page_unlock_queues();
m[i]->valid = VM_PAGE_BITS_ALL;
m[i]->dirty = 0;
/* The requested page must remain busy, the others not. */
@ -158,6 +160,7 @@ phys_pager_getpages(vm_object_t object, vm_page_t *m, int count, int reqpage)
m[i]->busy = 0;
}
}
vm_page_unlock_queues();
splx(s);
return (VM_PAGER_OK);