lkml.org 
[lkml]   [2007]   [Sep]   [28]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
From
SubjectRe: XFS Fails Quality Assurance Tests on ARM
Date
On Sunday 02 September 2007 08:14, Andi Kleen wrote:
> David Miller <davem@davemloft.net> writes:
> > From: Byron Bradley <byron.bbradley@gmail.com>
> > Date: Fri, 31 Aug 2007 03:12:46 +0000 (UTC)
> >
> > > Anybody got any ideas of how we fix this?
> >
> > I don't know how much testing XFS gets on ARM, but one thing that some
> > ARM chips have is D-cache aliasing problems and one thing XFS uses a
> > lot is virtual remapping of various data structures via vmap().
> >
> > This might be what is causing the problems.
>
> AFAIK XFS uses vmap() mainly during log replay. If David's theory
> was true then the failures must be seen during tests that do
> this.

I think it can also do vmap for directory lookups, and it crashed
in some directory lookup AFAIKS.

One way to verify would be to create the XFS filesystem with PAGE_SIZE
directory blocks (mkfs.xfs -nsize=PAGE_SIZE) I believe. Dave will correct
me if I'm wrong.

-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@vger.kernel.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/

\
 
 \ /
  Last update: 2007-09-28 16:15    [W:0.085 / U:0.880 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site