From: "Matias Bjørling" <mb@lightnvm.io>
To: "Javier González" <jg@lightnvm.io>
Cc: linux-kernel@vger.kernel.org, linux-block@vger.kernel.org,
"Javier González" <javier@cnexlabs.com>
Subject: Re: [PATCH 1/2] lightnvm: warn if irqs are disabled in lock laddr
Date: Wed, 3 Feb 2016 09:54:21 +0100 [thread overview]
Message-ID: <56B1C03D.70203@lightnvm.io> (raw)
In-Reply-To: <1454322873-28687-1-git-send-email-javier@javigon.com>
On 02/01/2016 11:34 AM, Javier González wrote:
> Add a warning if irqs are disabled when locking a new address in rrpc.
> The typical path to a new request does not disable irqs, but this is not
> guaranteed in the future.
>
> Signed-off-by: Javier González <javier@cnexlabs.com>
> ---
> drivers/lightnvm/rrpc.h | 2 ++
> 1 file changed, 2 insertions(+)
>
> diff --git a/drivers/lightnvm/rrpc.h b/drivers/lightnvm/rrpc.h
> index dfca5c4..c27283a 100644
> --- a/drivers/lightnvm/rrpc.h
> +++ b/drivers/lightnvm/rrpc.h
> @@ -184,6 +184,8 @@ static int __rrpc_lock_laddr(struct rrpc *rrpc, sector_t laddr,
> sector_t laddr_end = laddr + pages - 1;
> struct rrpc_inflight_rq *rtmp;
>
> + WARN_ON(irqs_disabled());
> +
> spin_lock_irq(&rrpc->inflights.lock);
> list_for_each_entry(rtmp, &rrpc->inflights.reqs, list) {
> if (unlikely(request_intersects(rtmp, laddr, laddr_end))) {
>
Thanks, applied for next -rc.
prev parent reply other threads:[~2016-02-03 8:54 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-02-01 10:34 Javier González
2016-02-01 10:34 ` [PATCH 2/2] lightnvm: fix request intersection locking in rrpc Javier González
2016-02-03 8:53 ` Matias Bjørling
2016-02-03 8:54 ` Matias Bjørling [this message]
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