linux-kernel - [PATCH] blk-mq: Explicitly zero-init blk_mq_tags.active

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Date:   Tue, 26 May 2020 18:45:00 +0800
From:   John Garry <john.garry@...wei.com>
To:     <axboe@...nel.dk>
CC:     <linux-block@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
        John Garry <john.garry@...wei.com>
Subject: [PATCH] blk-mq: Explicitly zero-init blk_mq_tags.active_queues

As is good practice, explicitly zero-init atomic_t type
blk_mq_tags.active_queues.

Signed-off-by: John Garry <john.garry@...wei.com>

diff --git a/block/blk-mq-tag.c b/block/blk-mq-tag.c
index 586c9d6e904a..cbbd0af9f3b0 100644
--- a/block/blk-mq-tag.c
+++ b/block/blk-mq-tag.c
@@ -469,6 +469,7 @@ struct blk_mq_tags *blk_mq_init_tags(unsigned int total_tags,
 
 	tags->nr_tags = total_tags;
 	tags->nr_reserved_tags = reserved_tags;
+	atomic_set(&tags->active_queues, 0);
 
 	return blk_mq_init_bitmap_tags(tags, node, alloc_policy);
 }
-- 
2.16.4