From: Ingo Molnar <mingo@kernel.org>
To: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Cc: linux-kernel@vger.kernel.org,
Peter Zijlstra <peterz@infradead.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>,
Matthew Wilcox <willy@infradead.org>,
Mike Galbraith <umgwanakikbuti@gmail.com>,
Minchan Kim <minchan@kernel.org>, Nitin Gupta <ngupta@vflare.org>,
Sergey Senozhatsky <sergey.senozhatsky.work@gmail.com>
Subject: Re: [PATCH v2 7/7] zram: Use local lock to protect per-CPU data
Date: Mon, 25 May 2020 09:26:48 +0200 [thread overview]
Message-ID: <20200525072648.GF329373@gmail.com> (raw)
In-Reply-To: <20200524215739.551568-8-bigeasy@linutronix.de>
* Sebastian Andrzej Siewior <bigeasy@linutronix.de> wrote:
> --- a/drivers/block/zram/zcomp.h
> +++ b/drivers/block/zram/zcomp.h
> @@ -5,11 +5,13 @@
>
> #ifndef _ZCOMP_H_
> #define _ZCOMP_H_
> +#include <linux/locallock.h>
>
> struct zcomp_strm {
> /* compression/decompression buffer */
> void *buffer;
> struct crypto_comp *tfm;
> + struct local_lock lock;
> };
I believe the general pattern is to put the lock in front of the
fields it protects.
I'd also add a comment documenting that both fields ->buffer and ->tfm
are protected by the lock.
Thanks,
Ingo
next prev parent reply other threads:[~2020-05-25 7:26 UTC|newest]
Thread overview: 24+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-05-24 21:57 [PATCH 0/7 v2] Introduce local_lock() Sebastian Andrzej Siewior
2020-05-24 21:57 ` [PATCH v2 1/7] locking: " Sebastian Andrzej Siewior
2020-05-25 7:01 ` Ingo Molnar
2020-05-25 7:12 ` Ingo Molnar
2020-05-25 11:27 ` Sebastian Andrzej Siewior
2020-05-25 11:26 ` Sebastian Andrzej Siewior
2020-05-24 21:57 ` [PATCH v2 2/7] radix-tree: Use local_lock for protection Sebastian Andrzej Siewior
2020-05-25 6:29 ` Ingo Molnar
2020-05-25 11:11 ` Matthew Wilcox
2020-05-25 13:26 ` Ingo Molnar
2020-05-25 11:17 ` Sebastian Andrzej Siewior
2020-05-24 21:57 ` [PATCH v2 3/7] mm/swap: " Sebastian Andrzej Siewior
2020-05-25 6:44 ` Ingo Molnar
2020-05-25 17:07 ` Sebastian Andrzej Siewior
2020-05-24 21:57 ` [PATCH v2 4/7] squashfs: make use of local lock in multi_cpu decompressor Sebastian Andrzej Siewior
2020-05-24 21:57 ` [PATCH v2 5/7] connector/cn_proc: Protect send_msg() with a local lock Sebastian Andrzej Siewior
2020-05-25 7:18 ` Ingo Molnar
2020-05-25 14:51 ` Sebastian Andrzej Siewior
2020-05-24 21:57 ` [PATCH v2 6/7] zram: Allocate struct zcomp_strm as per-CPU memory Sebastian Andrzej Siewior
2020-05-25 7:24 ` Ingo Molnar
2020-05-25 16:50 ` Sebastian Andrzej Siewior
2020-05-24 21:57 ` [PATCH v2 7/7] zram: Use local lock to protect per-CPU data Sebastian Andrzej Siewior
2020-05-25 7:26 ` Ingo Molnar [this message]
2020-05-25 16:51 ` Sebastian Andrzej Siewior
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