linux-kernel - RE: [PATCH] f2fs: change to use rwsem for cp

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Date:   Mon, 23 Nov 2020 17:05:08 +0000
From:   David Laight <David.Laight@...LAB.COM>
To:     'Sahitya Tummala' <stummala@...eaurora.org>,
        Jaegeuk Kim <jaegeuk@...nel.org>, Chao Yu <yuchao0@...wei.com>,
        "linux-f2fs-devel@...ts.sourceforge.net" 
        <linux-f2fs-devel@...ts.sourceforge.net>
CC:     "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: RE: [PATCH] f2fs: change to use rwsem for cp_mutex

From: Sahitya Tummala
> Sent: 23 November 2020 05:29
> 
> Use rwsem to ensure serialization of the callers and to avoid
> starvation of high priority tasks, when the system is under
> heavy IO workload.

I can't see any read lock requests.

So why the change?

	David

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