Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) client-ip=23.128.96.18;
Date:   Wed, 20 May 2020 12:56:29 +0200
From:   Peter Zijlstra <peterz@infradead.org>
To:     Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Cc:     linux-kernel@vger.kernel.org, Ingo Molnar <mingo@kernel.org>,
        Steven Rostedt <rostedt@goodmis.org>,
        Will Deacon <will@kernel.org>,
        Thomas Gleixner <tglx@linutronix.de>,
        "Paul E . McKenney" <paulmck@kernel.org>,
        Linus Torvalds <torvalds@linux-foundation.org>,
        Julia Cartwright <julia@ni.com>,
        Phillip Lougher <phillip@squashfs.org.uk>,
        Alexander Stein <alexander.stein@systec-electronic.com>
Subject: Re: [PATCH 5/8] squashfs: make use of local lock in multi_cpu
 decompressor
Message-ID: <20200520105629.GH317569@hirez.programming.kicks-ass.net>
References: <20200519201912.1564477-1-bigeasy@linutronix.de>
 <20200519201912.1564477-6-bigeasy@linutronix.de>
MIME-Version: 1.0
Content-Type: text/plain; charset=us-ascii
Content-Disposition: inline
In-Reply-To: <20200519201912.1564477-6-bigeasy@linutronix.de>
Sender: linux-kernel-owner@vger.kernel.org
Precedence: bulk

On Tue, May 19, 2020 at 10:19:09PM +0200, Sebastian Andrzej Siewior wrote:
> diff --git a/fs/squashfs/decompressor_multi_percpu.c b/fs/squashfs/decompressor_multi_percpu.c
> index 2a2a2d106440e..8a77a2741c176 100644
> --- a/fs/squashfs/decompressor_multi_percpu.c
> +++ b/fs/squashfs/decompressor_multi_percpu.c
> @@ -8,6 +8,7 @@
>  #include <linux/slab.h>
>  #include <linux/percpu.h>
>  #include <linux/buffer_head.h>
> +#include <linux/locallock.h>
>  
>  #include "squashfs_fs.h"
>  #include "squashfs_fs_sb.h"
> @@ -23,6 +24,8 @@ struct squashfs_stream {
>  	void		*stream;
>  };
>  
> +static DEFINE_LOCAL_LOCK(stream_lock);

As per the others, you can stick it in struct squashfs_stream.