Re: [PATCH] sr: Ensure disk is revalidated when media changes

From: Tejun Heo
Date: Wed Apr 06 2011 - 06:06:36 EST

On Tue, Apr 05, 2011 at 12:21:30PM +0530, Amit Shah wrote:
> > But I don't think this is the correct place to do it. The problem
> > happens because block layer consumes the event but doesn't remember it
> > when the time for revalidation comes. It should be done by block
> > layer, not sr. Hmmm... looking at the code, the new disk event code
> > should handle this correctly. Was 2.6.38 showing the problem too?
> Yes, 2.6.38 shows the same problem. I went back to ancient kernels
> (2.6.31 on Fedora 11-alpha) which had the previous media_changed
> infrastructure and those places too show the same behaviour (with the
> TEST_UNIT_READY way of detecting media changes).

Can you please the patch attached in the following bz and see whether
it makes any difference?


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