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[Xen-changelog] [xen-unstable] [BLKTAP] fix race between ufe_ring and bl

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Subject:	[Xen-changelog] [xen-unstable] [BLKTAP] fix race between ufe_ring and blk_ring in blktap.c
From:	Xen patchbot-unstable <patchbot-unstable@xxxxxxxxxxxxxxxxxxx>
Date:	Fri, 17 Nov 2006 22:20:12 +0000
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# HG changeset patch
# User Jake Wires <jwires@xxxxxxxxxxxxx>
# Node ID f0ba459065d32b61c9d04ccde5787e48e23be782
# Parent  f1d2860c51370f7a89c5b8b6b7941b8975928349
[BLKTAP] fix race between ufe_ring and blk_ring in blktap.c

Signed-off-by: Jake Wires <jwires@xxxxxxxxxxxxx>
---
 linux-2.6-xen-sparse/drivers/xen/blktap/blktap.c |    2 +-
 1 files changed, 1 insertion(+), 1 deletion(-)

diff -r f1d2860c5137 -r f0ba459065d3 
linux-2.6-xen-sparse/drivers/xen/blktap/blktap.c
--- a/linux-2.6-xen-sparse/drivers/xen/blktap/blktap.c  Fri Nov 17 17:57:49 
2006 +0000
+++ b/linux-2.6-xen-sparse/drivers/xen/blktap/blktap.c  Thu Nov 16 18:47:28 
2006 -0800
@@ -1059,9 +1059,9 @@ static int blktap_read_ufe_ring(tap_blki
                        map[offset] = NULL;
                }
                fast_flush_area(pending_req, pending_idx, usr_idx, info->minor);
+               info->idx_map[usr_idx] = INVALID_REQ;
                make_response(blkif, pending_req->id, res.operation,
                              res.status);
-               info->idx_map[usr_idx] = INVALID_REQ;
                blkif_put(pending_req->blkif);
                free_req(pending_req);
        }

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