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List:       linux-mm
Subject:    Re: 2.6.0-test9-mm1 -- DIO and AIO Tests results
From:       Daniel McNeil <daniel () osdl ! org>
Date:       2003-10-31 23:32:54
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I have re-run the AIO tests on test9, test9-mm1, and
test9-mm1+retry-based-aio-dio-patch;

I ran the tests on an ext3 file system running on a 2-proc XEON 
to an ide disk drive.

2.6.0-test9:
===========
As reported earlier, test9 is seeing uninitialized data and the
kiocbs are being modified after free:

$ dio_sparse
non zero buffer at buf[0] => 0xaa,aa,aa,aa
non-zero read at offset 69533696

$ aiodio_sparse
non zero buffer at buf[0] => 0xaa,aa,aa,aa
non-zero read at offset 81854464

With slab debug on, test9 still gets

slab error in check_poison_obj(): cache `kiocb': object was modified after freeing


2.6.0-test9-mm1:
===============

dio_spares - run without seeing uninitialized data 

aiodio_sparse - get AIO errors and these kernel messages:

aio_run_iocb: iocb->ki_retry = NULL
Maximal retry count.  Bytes done 0
Slab corruption: start=e8676d68, expend=e8676e37, problemat=e8676d68
Last user: [<c018f883>](__aio_put_req+0xa8/0x1b3)
...
slab error in check_poison_obj(): cache `kiocb': object was modified after freeing

	
2.6.0-test9-mm1+retry-based-aio-dio-patch (from suparna)
=======================================================

dio_sparse - runs successfully and does not see uninitialized data

aiodio_sparse - runs successfully, does not see uninitialized data,
	and no slab corruption.


As before, my updated tests are here:
http://developer.osdl.org/daniel/AIO/TESTS/


Daniel


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