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SubjectRe: Call trace at mm/page-writeback.c in 2.5.47
Mark Haverkamp wrote:
>
> While running a memory stress workload test on a 16 processor numa
> system, I received a number of call traces like the following:

What is the workload? And in which journalling mode was ext3
being used?

Was the workload actually being run against ext3?

> buffer layer error at mm/page-writeback.c:559
> Pass this trace through ksymoops for reporting
> Call Trace:
> [<c013f1fb>] __set_page_dirty_buffers+0x3b/0x150
> [<c012d746>] zap_pte_range+0x1d6/0x2c0
> [<c0183401>] do_get_write_access+0x4a1/0x4d0
> [<c012d89c>] zap_pmd_range+0x6c/0x80

A non-uptodate page mapped into pagetables. I _think_ I
can see how that can happen. If the workload was, say,
bash-shared-mapping...

If it is reproducible, does the removal of the ClearPageUptodate
statement from mm/truncate.c:truncate_complete_page() make it
go away?

Thanks.
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