Re: [PATCH] per-backing dev unplugging #2

[Chris Mason]

On Thu, 2004-03-11 at 03:36, Jens Axboe wrote:
> Hi,
> 
> Final version, unless something stupid pops up. Changes:

During a mixed load test including fsx-linux and a bunch of procs
running cp/read/rm loops, I got a null pointer deref with the call
trace:

__lock_page->sync_page->block_sync_page

I don't see how we can trust page->mapping in this path, can't it
disappear?  If so, it would be a bug without Jens' patch too, just
harder to hit.

-chris


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