K 10
svn:author
V 3
kib
K 8
svn:date
V 27
2010-12-29T12:53:53.750450Z
K 7
svn:log
V 816
Move the increment of vm object generation count into
vm_object_set_writeable_dirty().

Fix an issue where restart of the scan in vm_object_page_clean() did
not removed write permissions for newly added pages or, if the mapping
for some already scanned page changed to writeable due to fault.
Merge the two loops in vm_object_page_clean(), doing the remove of
write permission and cleaning in the same loop. The restart of the
loop then correctly downgrade writeable mappings.

Fix an issue where a second caller to msync() might actually return
before the first caller had actually completed flushing the
pages. Clear the OBJ_MIGHTBEDIRTY flag after the cleaning loop, not
before.

Calls to pmap_is_modified() are not needed after pmap_remove_write()
there.

Proposed, reviewed and tested by:	alc
MFC after:	1 week

END