On Thu, Jan 03, 2013 at 02:50:46PM -0600, Ed Cashin wrote:
> >>> The blk_alloc_queue has already done a bdi_init, so do not bdi_init again 
> >>> in
> >>> aoeblk_gdalloc.
> >>> 
> >>> The patch below applies to v3.5.6, with its v47 aoe driver.  On my system 
> >>> it
> >>> eliminates the list_del corruption messages.
> >> 
> >> Since the patch doesn't apply to current -git, does the problem not
> >> exist there?
> > 
> > The original post is about an older kernel with the v47 aoe driver.  The 
> > current mainline has a v81 aoe driver, so the patch for v3.5.6 isn't 
> > expected to apply to the mainline.
> > 
> > I'm currently investigating the state of the mainline with relation to this 
> > issue.
> 
> I don't see the extra call to bdi_init in aoe driver v81 in the mainline git 
> tree, and
> I don't see the symptoms under discussion, either, when performing the same 
> test steps.
> 
> Kernels with aoe v47 can use the patch I just posted.
> 
> I'm going to go through the stable kernels and check, but I believe kernels 
> after
> v47 but before commit 0a41409c5180 should apply the fix in 0a41409c5180:
> 
>   commit 0a41409c518083133e79015092585d68915865be
>   Author: Ed Cashin <ecas...@coraid.com>
>   Date:   Mon Dec 17 16:03:58 2012 -0800
>   
>       aoe: remove vestigial request queue allocation
> 
> Josh, can you confirm that the patch I posted in this thread today works for 
> your customer?

Sure.  I'll get a test kernel built with that patch and ask them to
test.

josh
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