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Re: [dm-devel] [PATCH 1/2] block: fix leaks associated with discard request payload



On Sun, Jun 27, 2010 at 09:32:07PM +0900, FUJITA Tomonori wrote:
> On Sun, 27 Jun 2010 13:07:12 +0200
> Christoph Hellwig <hch lst de> wrote:
> 
> > > How about this?
> > 
> > As I tried to explain before this utterly confuses the I/O completion
> > path.  With the patch applied even a simple mkfs.xfs that issues discard
> > just hangs.
> 
> Wired. I just tried mkfs.xfs against scsi_debug with my block patches
> (I saw one discard command). Seemed that it worked fine.

Doesn't work for me against either a real SSD or WRITE SAME support in
qemu.  But I think I didn't actually have your barrier patches applied,
so I'll try again with a clean tree.


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