linux-kernel - Re: [PATCH] Remove certain calls for releasing page cache

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Message-ID: <CAPDOMVgXChx5HST-jMEZmWDydWKe0Yv15pyTiPeOuQSVEjihFA@mail.gmail.com>
Date:	Wed, 30 Jul 2014 22:05:16 -0400
From:	Nick Krause <xerofoify@...il.com>
To:	Dave Airlie <airlied@...il.com>
Cc:	Chris Mason <clm@...com>, Josef Bacik <jbacik@...com>,
	"linux-btrfs@...r.kernel.org SYSTEM list:BTRFS FILE" 
	<linux-btrfs@...r.kernel.org>, LKML <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH] Remove certain calls for releasing page cache

On Wed, Jul 30, 2014 at 7:30 PM, Dave Airlie <airlied@...il.com> wrote:
>> This patch removes the lines for releasing the page cache in certain
>> files as this may aid in perfomance with writes in the compression
>> rountines of btrfs. Please note that this patch has not been tested
>> on my own hardware due to no compression based btrfs volumes of my
>> own.
>>
>
> For all that is sacred, STOP.
>
> Go and do something else, you are wasting people's valuable time,
>
> Don't send any patches you haven't tested ever. If you aren't capable
> of setting up a VM to run compressed btrfs volumes in, what makes you
> think you can patch the code.
>
> This isn't how you learn to be a kernel developer by wasting other
> kernel developers time, if you can't work out why releasing the page cache
> is necessary then don't send the patch until you have spent the time
> understanding what the page cache is.
>
> I know you'll just ignore this, and keep on trucking just like you ignored
> the other messages from Stephen before.
>
> But if you want to work on the kernel, this isn't the way to do it, and
> nobody will ever take a patch from you seriously if you continue in this
> fashion.
>
> Dave.
Dave ,
Seems I need to have tested this code first.
Regards Nick
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