Re: [PATCH 0/11] Per-bdi writeback flusher threads v8

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On Wed, May 27 2009, Theodore Tso wrote:
> Hi Jens,
> 
> FYI, just for yucks I tried to merge your bdi patches and the ext4
> patch queue to make sure there were no patch conflicts, and started a
> quick regression run.  I got the following soft lockup report when
> running "fsstress -d /mnt/tmp -s 12345 -S -p 20 -n 1000".
> 
> I'll retry the test with your stock writeback-v8 git branch w/o any
> ext4 patches planned the next mere window mainline to see if I get the
> same soft lockup, but I thought I should give you an early heads up.

It looks like it's the writeback patches, from a quick glance. Did it
get stuck, or did it still make progress? Thanks for testing, please let
me know if it triggers with just wb-v8. Can you send me your .config,
too? I'm assuming no special ext4 mount options, right? I used ext4 as
well for testing, using -o barrier=0 for most of the runs.

Irregardless, I'll try this test and poke a bit at it and find out what
the issue is.

-- 
Jens Axboe

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