On Fri, Oct 07, 2016 at 08:47:51AM +1100, Dave Chinner wrote: > Except that it's DAX, and in 4.7-rc1 that used shared locking at the > XFS level and never took exclusive locks. > > *However*, the DAX IO path locking in XFS has changed in 4.9-rc1 to > match the buffered IO single writer POSIX semantics - the test is a > bad test based on the fact it exercised a path that is under heavy > development and so can't be used as a regression test across > multiple kernels. That being said - I wonder if we should allow the shared lock on DAX files IFF the user is specifying O_DIRECT in the open mode.. -- To unsubscribe from this list: send the line "unsubscribe linux-doc" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
