From: Stefan Haberland Date: Tue, 22 Dec 2015 12:34:38 +0000 (+0100) Subject: s390/dasd: fix failfast for disconnected devices X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=c6fc7b6f8ca5d3d59446ce4ee870569355cfb04a;p=GitHub%2Fmoto-9609%2Fandroid_kernel_motorola_exynos9610.git 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 Signed-off-by: Martin Schwidefsky --- 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 */