Re: 2.6.16: Oops - null ptr in blk_recount_segments?

From: Peter Palfrader
Date: Tue Mar 28 2006 - 23:37:46 EST


Jan Engelhardt schrieb am Dienstag, dem 28. März 2006:

> >These diffs:
> >
> >2006-01-18
> >[XFS] Fix a race in xfs_submit_ioend() where we can ...
> >2006-01-11
> >[XFS] fix writeback control handling fix a reversed ...
> >[XFS] cluster rewrites We can cluster mapped pages ...
> >[...]
>
> I bet on the 3rd...

Just reverting #3[0] on 2.6.16 doesn't fix it either.

Peter, back on 2.6.14.2 for now.

0. one hunk didn't unapply cleanly, and the change was not obvious. I
opted for making the beginning of xfs_probe_cluster() look like:
| /* First sum forwards in this page */
| do {
| if (!buffer_uptodate(bh) || (mapped != buffer_mapped(bh)))
| return total;
| total += bh->b_size;
| } while ((bh = bh->b_this_page) != head);
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