On Mon, Aug 30, 2010 at 05:56:07PM -0500, Mike Gao wrote: > Thanks very much for help. The kernel is pretty old, 2.6.19 but the xfs is > pretty new. > the block size is 512 and use mmap for test with write and read compare. > (xfstest 074). Can you reproduce it on a more recent kernel? The buffer flags are modified by code outside XFS which could be significantly different in 2.6.19 comapred to 2.6.34/35, so it may not be aproblem with the XFS code as such.... Cheers, Dave. -- Dave Chinner david@xxxxxxxxxxxxx _______________________________________________ xfs mailing list xfs@xxxxxxxxxxx http://oss.sgi.com/mailman/listinfo/xfs