linux-kernel - Re: [PATCH] ufs: use ktime_get_real

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Message-ID: <alpine.DEB.2.21.1806201033350.10546@nanos.tec.linutronix.de>
Date:   Wed, 20 Jun 2018 10:33:57 +0200 (CEST)
From:   Thomas Gleixner <tglx@...utronix.de>
To:     Arnd Bergmann <arnd@...db.de>
cc:     Evgeniy Dushistov <dushistov@...l.ru>, y2038@...ts.linaro.org,
        Jeff Layton <jlayton@...hat.com>,
        David Howells <dhowells@...hat.com>,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH] ufs: use ktime_get_real_seconds for sb and cg
 timestamps

On Tue, 19 Jun 2018, Arnd Bergmann wrote:

> get_seconds() is deprecated because of the 32-bit overflow and will
> be removed. All callers in ufs also truncate to a 32-bit number, so
> nothing changes during the conversion, but this should be harmless as the
> superblock and cylinder group timestamps are not visible to user space,
> except for checking the fs-dirty state, wich works fine across the
> overflow.
> 
> This moves the call to get_seconds() into a new inline function, with
> a comment explaining the constraints, while converting it to
> ktime_get_real_seconds().

Acked-by: Thomas Gleixner <tglx@...utronix.de>