From: Jan Beulich <JBeulich@suse.com>
Date: Mon, 11 Mar 2013 09:39:55 +0000 (+0000)
Subject: xen-blkback: fix dispatch_rw_block_io() error path
X-Git-Tag: v3.2.43~56
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=49b202a2e31cd792c127c9a306947e101f7300d9;p=pandora-kernel.git

xen-blkback: fix dispatch_rw_block_io() error path

commit 0e5e098ac22dae38f957e951b70d3cf73beff0f7 upstream.

Commit 7708992 ("xen/blkback: Seperate the bio allocation and the bio
submission") consolidated the pendcnt updates to just a single write,
neglecting the fact that the error path relied on it getting set to 1
up front (such that the decrement in __end_block_io_op() would actually
drop the count to zero, triggering the necessary cleanup actions).

Also remove a misleading and a stale (after said commit) comment.

Signed-off-by: Jan Beulich <jbeulich@suse.com>
Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
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