Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) client-ip=2620:137:e000::1:20;
Date:   Thu, 11 May 2023 14:14:08 +0200 (CEST)
From:   Jan Engelhardt <jengelh@inai.de>
To:     Kent Overstreet <kent.overstreet@linux.dev>
cc:     linux-kernel@vger.kernel.org, linux-fsdevel@vger.kernel.org,
        linux-bcachefs@vger.kernel.org,
        Kent Overstreet <kent.overstreet@gmail.com>,
        Peter Zijlstra <peterz@infradead.org>,
        Ingo Molnar <mingo@redhat.com>, Will Deacon <will@kernel.org>,
        Waiman Long <longman@redhat.com>,
        Boqun Feng <boqun.feng@gmail.com>
Subject: Re: [PATCH 04/32] locking: SIX locks (shared/intent/exclusive)
In-Reply-To: <20230509165657.1735798-5-kent.overstreet@linux.dev>
Message-ID: <7233p553-861o-9772-n4nr-rr5424prq1r@vanv.qr>
References: <20230509165657.1735798-1-kent.overstreet@linux.dev> <20230509165657.1735798-5-kent.overstreet@linux.dev>
User-Agent: Alpine 2.25 (LSU 592 2021-09-18)
MIME-Version: 1.0
Content-Type: text/plain; charset=US-ASCII
Precedence: bulk


On Tuesday 2023-05-09 18:56, Kent Overstreet wrote:
>--- /dev/null
>+++ b/include/linux/six.h
>@@ -0,0 +1,210 @@
>+ * There are also operations that take the lock type as a parameter, where the
>+ * type is one of SIX_LOCK_read, SIX_LOCK_intent, or SIX_LOCK_write:
>+ *
>+ *   six_lock_type(lock, type)
>+ *   six_unlock_type(lock, type)
>+ *   six_relock(lock, type, seq)
>+ *   six_trylock_type(lock, type)
>+ *   six_trylock_convert(lock, from, to)
>+ *
>+ * A lock may be held multiple types by the same thread (for read or intent,

"multiple times"

>+// SPDX-License-Identifier: GPL-2.0

The currently SPDX list only knows "GPL-2.0-only" or "GPL-2.0-or-later",
please edit.