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Commit the actual text provided by Alan, instead of the wrong update

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in r242011.

MFC after:	1 week
This commit is contained in:
Konstantin Belousov 2012-10-24 18:32:37 +00:00
parent bc79b37f2c
commit ef45823eba
1 changed files with 7 additions and 5 deletions
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12
sys/vm/vm_fault.c
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@ -1287,11 +1287,13 @@ vm_fault_copy_entry(vm_map_t dst_map, vm_map_t src_map,
access &= ~VM_PROT_WRITE;
/*
* Loop through all of the pages in the entry's range, copying
* each one from the source object (it should be there) to the
* destination object. Note that copied pages are not wired
* and marked dirty to prevent reclamation without saving the
* content into the swap file on pageout.
* Loop through all of the virtual pages within the entry's
* range, copying each page from the source object to the
* destination object. Since the source is wired, those pages
* must exist. In contrast, the destination is pageable.
* Since the destination object does share any backing storage
* with the source object, all of its pages must be dirtied,
* regardless of whether they can be written.
*/
for (vaddr = dst_entry->start, dst_pindex = 0;
vaddr < dst_entry->end;