What should to do with ASSERT failed

[Mike Gao]

What kind of logic there could be?

I notice that in old version, if page has no buffer in writepage, then xfs
will create a empty buffer and attach to page. This logic there at least
untill 2.6.33. But now xfs need this never happens (assert) when coming to
writepage.  But I guess, when use mmap, there is no buffer attach to page
because it operates on page directly on kernel. xfs should create buffer
before submit bio. There must be sth I don't know. Maybe sbd can help me
out.

Thanks very much,
Mike


On Mon, Aug 30, 2010 at 7:30 PM, Dave Chinner <david at fromorbit.com> wrote:

> 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 aproblem with the
> XFS code as such....
>
> Cheers,
>
> Dave.
> --
> Dave Chinner
> david at fromorbit.com
>
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://oss.sgi.com/pipermail/xfs/attachments/20100831/b343b0b7/attachment.htm>