Messages in this thread | | | Date | Wed, 7 Aug 2013 13:58:04 -0700 | From | Andrew Morton <> | Subject | Re: [PATCH] aoe: adjust ref of head for compound page tails |
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On Thu, 1 Aug 2013 21:29:59 -0400 Ed Cashin <ecashin@coraid.com> wrote:
> As discussed previously,
I think I missed that.
> the fact that some users of the block > layer provide bios that point to pages with a zero _count means > that it is not OK for the network layer to do a put_page on the > skb frags during an skb_linearize, so the aoe driver gets a > reference to pages in bios and puts the reference before ending > the bio. And because it cannot use get_page on a page with a > zero _count, it manipulates the value directly.
Eh? What code is putting count==0 pages into bios? That sounds very weird and broken.
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