linux-ext4 - Re: [PATCH 1/2] fs: Do not dispatch FITRIM through separate super

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Date:	Fri, 19 Nov 2010 10:35:28 -0500
From:	Mark Lord <kernel@...savvy.com>
To:	Ted Ts'o <tytso@....edu>, Steven Whitehouse <swhiteho@...hat.com>,
	Lukas Czerner <lczerner@...hat.com>,
	James Bottomley <James.Bottomley@...e.de>,
	Christoph Hellwig <hch@...radead.org>,
	Matthew Wilcox <matthew@....cx>,
	Josef Bacik <josef@...hat.com>, linux-ext4@...r.kernel.org,
	linux-kernel@...r.kernel.org, linux-fsdevel@...r.kernel.org,
	sandeen@...hat.com
Subject: Re: [PATCH 1/2] fs: Do not dispatch FITRIM through separate super_operation

On 10-11-19 09:02 AM, Ted Ts'o wrote:
>but that's why mount -o discard is not the default.

But, oddly, it _is_ the default for mke2fs -t ext4,
which really threw me for a loop recently.

I though my system had locked up when suddenly everything
went dead for a very long time (many minutes) while installing a new system.

Then I figured out what was going on.
I really believe that "-K" should be the _default_ for mke2fs,
as otherwise lots of other people probably also wonder
if Linux is killing their SSD at system install time..

Cheers
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