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authorStefan Haberland <stefan.haberland@de.ibm.com>2015-12-22 15:34:38 +0300
committerMartin Schwidefsky <schwidefsky@de.ibm.com>2015-12-30 12:34:41 +0300
commitc6fc7b6f8ca5d3d59446ce4ee870569355cfb04a (patch)
tree80f53bfdd4a1bb1379c08e8038e611d9eaa3f115 /drivers/s390
parentcf61393f4aa30f4c2a11cf2437d49ff4de6eb4fb (diff)
downloadlinux-c6fc7b6f8ca5d3d59446ce4ee870569355cfb04a.tar.xz
s390/dasd: fix failfast for disconnected devices
Enabling failfast should let request fail immediately if either an error occurred or the device gets disconnected. For disconnected devices new requests are not fetches from the block queue and therefore failfast is not triggered. Fix by letting the DASD driver fetch requests for disconnected devices with failfast active. Signed-off-by: Stefan Haberland <stefan.haberland@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Diffstat (limited to 'drivers/s390')
-rw-r--r--drivers/s390/block/dasd.c8
1 files changed, 6 insertions, 2 deletions
diff --git a/drivers/s390/block/dasd.c b/drivers/s390/block/dasd.c
index a263c10359e1..41605dac8309 100644
--- a/drivers/s390/block/dasd.c
+++ b/drivers/s390/block/dasd.c
@@ -2556,8 +2556,12 @@ static void __dasd_process_request_queue(struct dasd_block *block)
return;
}
- /* if device ist stopped do not fetch new requests */
- if (basedev->stopped)
+ /*
+ * if device is stopped do not fetch new requests
+ * except failfast is active which will let requests fail
+ * immediately in __dasd_block_start_head()
+ */
+ if (basedev->stopped && !(basedev->features & DASD_FEATURE_FAILFAST))
return;
/* Now we try to fetch requests from the request queue */