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Code Issues Releases Activity

Extend the scope of the page queues/fields locking in vm_freeze_copyopts()

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to cover pmap_remove_all().

Approved by:	re
This commit is contained in:
Alan Cox 2002-11-24 06:13:38 +00:00
parent 87b45ed576
commit 13dc71ed40
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=107200
1 changed files with 3 additions and 1 deletions
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4
sys/vm/vm_object.c
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@ -1933,7 +1933,9 @@ vm_freeze_copyopts(vm_object_t object, vm_pindex_t froma, vm_pindex_t toa)
if (m_out->valid == 0) {
m_in = vm_page_grab(object, bo_pindex + idx,
VM_ALLOC_NORMAL | VM_ALLOC_RETRY);
vm_page_lock_queues();
if (m_in->valid == 0) {
vm_page_unlock_queues();
rv = vm_pager_get_pages(object, &m_in, 1, 0);
if (rv != VM_PAGER_OK) {
printf("vm_freeze_copyopts: cannot read page from file: %lx\n", (long)m_in->pindex);
@ -1941,10 +1943,10 @@ vm_freeze_copyopts(vm_object_t object, vm_pindex_t froma, vm_pindex_t toa)
}
vm_page_lock_queues();
vm_page_deactivate(m_in);
vm_page_unlock_queues();
}
pmap_remove_all(m_in);
vm_page_unlock_queues();
pmap_copy_page(m_in, m_out);
m_out->valid = m_in->valid;
vm_page_dirty(m_out);