K 10
svn:author
V 3
avg
K 8
svn:date
V 27
2013-11-19T18:35:38.848556Z
K 7
svn:log
V 621
fsx: add an option to randomly call msync(MS_INVALIDATE)

This call should be a sufficiently close approximation of what happens
when a filesystem is unmounted and remounted.  To be more specific, it
should test that the data that was in the page cache is the same data
that ends up on a stable storage or in a filesystem's internal cache,
if any.
This will catch the cases where a page with modified data is marked as
a clean page for whatever reason.

While there, make logging of the special events (open+close before
plus invalidation now) more generic and slightly better than the previous
hack.

MFC after:	10 days

END