From d1ffc1f8660e749a2683f19ee7cfdd837568b37a Mon Sep 17 00:00:00 2001
From: Hannes Reinecke <hare@suse.de>
Date: Wed, 30 Jan 2013 09:26:16 +0000
Subject: block/dasd: detailed I/O errors

The DASD driver is using FASTFAIL as an equivalent to the
transport errors in SCSI. And the 'steal lock' function maps
roughly to a reservation error. So we should be returning the
appropriate error codes when completing a request.

Acked-by: Jens Axboe <axboe@kernel.dk>
Signed-off-by: Hannes Reinecke <hare@suse.de>
Signed-off-by: Stefan Weinhuber <wein@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
---
 block/blk-core.c | 3 +++
 1 file changed, 3 insertions(+)

(limited to 'block')

diff --git a/block/blk-core.c b/block/blk-core.c
index d5745b5833c9..321443226888 100644
--- a/block/blk-core.c
+++ b/block/blk-core.c
@@ -2315,6 +2315,9 @@ bool blk_update_request(struct request *req, int error, unsigned int nr_bytes)
 		case -EBADE:
 			error_type = "critical nexus";
 			break;
+		case -ETIMEDOUT:
+			error_type = "timeout";
+			break;
 		case -EIO:
 		default:
 			error_type = "I/O";
-- 
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