linux-kernel - Re: [PATCH v2 0/3] zram: Replace bit spinlocks with a spinlock

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Message-ID: <20240704093903.GC3232210@google.com>
Date: Thu, 4 Jul 2024 18:39:03 +0900
From: Sergey Senozhatsky <senozhatsky@...omium.org>
To: Sebastian Andrzej Siewior <bigeasy@...utronix.de>,
	Minchan Kim <minchan@...nel.org>
Cc: linux-block@...r.kernel.org, linux-kernel@...r.kernel.org,
	Sergey Senozhatsky <senozhatsky@...omium.org>,
	Jens Axboe <axboe@...nel.dk>, Thomas Gleixner <tglx@...utronix.de>,
	Mike Galbraith <umgwanakikbuti@...il.com>
Subject: Re: [PATCH v2 0/3] zram: Replace bit spinlocks with a spinlock_t.

On (24/06/20 17:28), Sebastian Andrzej Siewior wrote:
> this is follow up to the previous posting, making the lock
> unconditionally. The original problem with bit spinlock is that it
> disabled preemption and the following operations (within the atomic
> section) perform operations that may sleep on PREEMPT_RT. Mike expressed
> that he would like to keep using zram on PREEMPT_RT.

Sorry for the delay.

I guess this works for me, FWIW:
Reviewed-by: Sergey Senozhatsky <senozhatsky@...omium.org>

Minchan, any objections?