On Fri, Sep 28, 2012 at 09:12:15AM -0400, Theodore Ts'o wrote:

On Thu, Aug 23, 2012 at 12:25:39PM +0800, Zheng Liu wrote:

quoted

I run xfstests to do some tests, and I got an error from xfstests #
255.  The failure reason is that block-based file in ext4 cannot
support fallocate(2) to allocate an unwritten blocks.  I am not sure
whether we should change # 255 in xfstests or not.  So Cc' to Dave
Chinner to get some feedbacks.

Zheng,

I gave these patches a quick try and I'm seeing many more failures
than just test #255.  Tests 75, 91, 112, 215, and 263 are also
failing, and I don't think it's all due to punch being supported w/o
fallocate support.

Hi Ted,

Thanks for sharing this information with me.  I will look at these
patches after patch series of extent status tree gets stable and submit
to the mailing list.

Regards,
Zheng