Errors during expire

[patricks at support.nl]

Joe St Sauver <JOE at OREGON.UOREGON.EDU> writes:

> On a completely different note, and on a different Linux box, I would
> also note that tradover is apparently exercising an interesting bug in
> the vfs layer generating errors such as:

> filemap.c:2084: bad pmd 1c0001e3.
> filemap.c:2084: bad pmd 1c0001e3.
> filemap.c:2084: bad pmd 2dc001e3.
> filemap.c:2084: bad pmd 2dc001e3.
>
> If anyone else is seeing that sort of thing and has found a solution for it,
> I'd be interested in hearing from you.

As of yesterday, we too are seeing this (2.4.18 and 2.4.19 kernel)
This has caused some kernel crashes.

Russ said:

> Currently neither the old nor the new tradindexed code is correctly
> aligning msync calls, I think.  That may have something to do with it.
> I'm going to fix that for the new implementation using Alex's new code
> sometime this week.

Can enabling MMAP_MISSES_WRITES in config.h fix this problem, or
should we switch to the new tradindexed code in CURRENT?

Thanks,

Patrick Schreurs
Support Net bv