linux-ext4 - Re: [RFC PATCH 0/3] Stop clearing uptodate flag on write IO error

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Date:	Mon, 16 Jan 2012 16:59:41 -0800
From:	Linus Torvalds <torvalds@...ux-foundation.org>
To:	Dave Chinner <david@...morbit.com>
Cc:	Jan Kara <jack@...e.cz>, linux-fsdevel@...r.kernel.org,
	linux-ext4@...r.kernel.org,
	Andrew Morton <akpm@...ux-foundation.org>,
	Christoph Hellwig <hch@...radead.org>,
	Al Viro <viro@...iv.linux.org.uk>,
	LKML <linux-kernel@...r.kernel.org>,
	Edward Shishkin <edward@...hat.com>
Subject: Re: [RFC PATCH 0/3] Stop clearing uptodate flag on write IO error

On Mon, Jan 16, 2012 at 4:36 PM, Dave Chinner <david@...morbit.com> wrote:
>
> Jan is right, Linus. His definition of what up-to-date means for
> dirty buffers is correct, especially in the case of write errors.

It's not a dirty buffer any more.

Go look. We've long since cleared the dirty bit.

So stop spouting garbage.

My argument is simple: the contents ARE NOT CORRECT ENOUGH to be
called "up-to-date and clean".

And I outlined the two choices:

 - mark it dirty and continue trying to write it out forever

 - invalidate it.

Anything else is crazy talk. And marking it dirty forever isn't really
an option. So..

               Linus
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