lkml.org 
[lkml]   [2003]   [Feb]   [12]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
SubjectRe: [Ext2-devel] Re: fsck out of memory
From
>>>>>> "Stephen" == Stephen C Tweedie <sct@redhat.com> writes:
>
> Stephen> Hi, On Tue, 2003-02-11 at 13:11, Stephan van Hienen wrote:
>
> Stephen> I've no idea. Ben has some lb patches up at
>
> Stephen> http://people.redhat.com/bcrl/lb/
>
> Stephen> but there's nothing broken out against the latest lbd diffs.
>
>
> Ben's patches are against a very old version of the kernel (2.4.6-pre8) and
> require linking against libgcc to get 64-bit division.
>
>
> The main issue is 64-bit division. In the limited time I had I
> couldn't convince myself that I could rely on all divisors being less than
> 2^31 in the raid4/5 code. If you can convince yourself of that, then t's a
> straightforward but tedious task to make raid1, raid4 and raid5 LBD-safe.
> --

Hi,
Is this in a speed-sensitive area?
If not, you could consider 64-bit software divide functions, such as found at
http://nemesis.sourceforge.net/browse/lib/static/intmath/ix86/intmath.c.html,
which would only be used on 32-bit CPUs, of course.

--
~Randy



-
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: 2005-03-22 13:33    [W:0.048 / U:0.744 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site