linux-kernel - Re: POSIX violation by writeback error

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Message-ID: <20180904092938.GJ11854@BitWizard.nl>
Date:   Tue, 4 Sep 2018 11:29:38 +0200
From:   Rogier Wolff <R.E.Wolff@...Wizard.nl>
To:     焦晓冬 <milestonejxd@...il.com>
Cc:     jlayton@...hat.com, linux-fsdevel@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: Re: POSIX violation by writeback error

On Tue, Sep 04, 2018 at 04:58:59PM +0800, 焦晓冬 wrote:

> As for suggestion, maybe the error flag of inode/mapping, or the entire inode
> should not be evicted if there was an error. That hopefully won't take much
> memory. On extreme conditions, where too much error inode requires staying
> in memory, maybe we should panic rather then spread the error.

Again you are hoping it will fit in memory. In an extreme case it
won't fit in memory. Tyring to come up with heuristics about when to
remember and when to forget such things from the past is very
difficult.

Think of my comments as: "it's harder than you think", not as "can't
be done".

	Roger.

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