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    Subject[PATCH RFC 1/2] blk-mq: call exit_hctx on hw queue teardown
    Date
    The driver initialize itself using init_hctx and reverts using exit_hctx if
    unsucessful. exit_hctx is missing on normal hw queue teardown.

    Signed-off-by: Matias Bjørling <m@bjorling.me>
    ---
    block/blk-mq.c | 2 ++
    1 file changed, 2 insertions(+)

    diff --git a/block/blk-mq.c b/block/blk-mq.c
    index 923e9e1..5b054b7 100644
    --- a/block/blk-mq.c
    +++ b/block/blk-mq.c
    @@ -1390,6 +1390,8 @@ void blk_mq_free_queue(struct request_queue *q)
    kfree(hctx->ctxs);
    blk_mq_free_rq_map(hctx);
    blk_mq_unregister_cpu_notifier(&hctx->cpu_notifier);
    + if (q->mq_ops->exit_hctx)
    + q->mq_ops->exit_hctx(hctx, i);
    q->mq_ops->free_hctx(hctx, i);
    }

    --
    1.8.1.2
    --
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