linux-kernel - [PATCH 4.14 042/137] s390/dasd: correct numa_node in dasd_alloc

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Message-Id: <20181002132501.426577974@linuxfoundation.org>
Date:   Tue,  2 Oct 2018 06:24:03 -0700
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     linux-kernel@...r.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        stable@...r.kernel.org, Stefan Haberland <sth@...ux.ibm.com>,
        Vasily Gorbik <gor@...ux.ibm.com>,
        Martin Schwidefsky <schwidefsky@...ibm.com>,
        Sasha Levin <alexander.levin@...rosoft.com>
Subject: [PATCH 4.14 042/137] s390/dasd: correct numa_node in dasd_alloc_queue

4.14-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Vasily Gorbik <gor@...ux.ibm.com>

[ Upstream commit b17e3abb0af404cb62ad4ef1a5962f58b06e2b78 ]

The numa_node field of the tag_set struct has to be explicitly
initialized, otherwise it stays as 0, which is a valid numa node id and
cause memory allocation failure if node 0 is offline.

Acked-by: Stefan Haberland <sth@...ux.ibm.com>
Signed-off-by: Vasily Gorbik <gor@...ux.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@...ibm.com>
Signed-off-by: Sasha Levin <alexander.levin@...rosoft.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
---
 drivers/s390/block/dasd.c |    1 +
 1 file changed, 1 insertion(+)

--- a/drivers/s390/block/dasd.c
+++ b/drivers/s390/block/dasd.c
@@ -3190,6 +3190,7 @@ static int dasd_alloc_queue(struct dasd_
 	block->tag_set.nr_hw_queues = DASD_NR_HW_QUEUES;
 	block->tag_set.queue_depth = DASD_MAX_LCU_DEV * DASD_REQ_PER_DEV;
 	block->tag_set.flags = BLK_MQ_F_SHOULD_MERGE;
+	block->tag_set.numa_node = NUMA_NO_NODE;
 
 	rc = blk_mq_alloc_tag_set(&block->tag_set);
 	if (rc)