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From: Linus Torvalds <torvalds@linux-foundation.org>
To: Andrew Morton <akpm@linux-foundation.org>
Cc: "Jörn Engel" <joern@logfs.org>, "Ingo Molnar" <mingo@elte.hu>,
	"David Brown" <lkml@davidb.org>,
	"Phil Oester" <kernel@linuxace.com>,
	"Kay Sievers" <kay.sievers@vrfy.org>,
	"Phillip Lougher" <phillip@lougher.demon.co.uk>,
	"Christoph Hellwig" <hch@infradead.org>,
	linux-kernel@vger.kernel.org, linux-fsdevel@vger.kernel.org
Subject: Re: [GIT PULL] Squashfs pull request for 2.6.29
Date: Sat, 10 Jan 2009 10:30:23 -0800 (PST)	[thread overview]
Message-ID: <alpine.LFD.2.00.0901101015290.6528@localhost.localdomain> (raw)
In-Reply-To: <20090110101235.7ca24c44.akpm@linux-foundation.org>



On Sat, 10 Jan 2009, Andrew Morton wrote:
> 
> More importantly, the filesystem driver has to be able to read older
> filesystem instances.  This is a userspace-visible binary interface!
> A really complex one.

Well, the good news is that read-only filesystems are _sooo_ much simpler 
than any real filesystem that quite frankly, on a "complexity" scale it's 
still way way down there.

Also, if it's not used for backup (and I don't think anybody would), 
there's actually less reason to be back-wards compatible. I know I changed 
cramfs a few times incompatibly, simply becaus "you might as well just 
re-run the user tools to generate the image". It was for a similar need, 
and the image really always goes along with the kernel.

I think squashfs usage would be similar - you'd not have squashfs as a 
standalone media, it would be a "installation medium" thing.

			Linus

  reply	other threads:[~2009-01-10 18:31 UTC|newest]

Thread overview: 50+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2009-01-08 16:48 [GIT PULL] Squashfs pull request for 2.6.29 Phillip Lougher
2009-01-08 16:50 ` Christoph Hellwig
2009-01-08 17:05   ` Phillip Lougher
2009-01-08 17:11   ` Geert Uytterhoeven
2009-01-08 23:55   ` H. Peter Anvin
2009-01-09  1:53   ` Andrew Morton
2009-01-09  2:11     ` Phillip Lougher
2009-01-09  2:24       ` Kay Sievers
2009-01-09  2:36         ` Phil Oester
2009-01-09 16:54           ` Jörn Engel
2009-01-09 19:37             ` David Brown
2009-01-09 21:19               ` Jörn Engel
2009-01-10 12:43                 ` Ingo Molnar
2009-01-10 16:50                   ` Jörn Engel
2009-01-10 18:12                     ` Andrew Morton
2009-01-10 18:30                       ` Linus Torvalds [this message]
2009-01-10 19:57                         ` Jeff Garzik
2009-01-10 20:16                           ` Leon Woestenberg
2009-01-11  6:36                         ` Valdis.Kletnieks
2009-01-10 19:19                       ` Olivier Galibert
2009-01-10 22:15                       ` Ingo Molnar
2009-01-11  9:30                         ` Geert Uytterhoeven
2009-01-11 15:39                           ` Ingo Molnar
2009-01-11 16:30                             ` Greg KH
2009-01-22 21:50                               ` Dave Jones
2009-01-22 21:57                                 ` Randy Dunlap
2009-01-22 22:15                                   ` Greg KH
2009-01-22 21:58                                 ` Greg KH
2009-01-22 22:26                                   ` Ingo Molnar
2009-01-22 22:50                                   ` Kyle McMartin
2009-01-22 23:04                                     ` Greg KH
2009-01-22 23:25                                       ` Evgeniy Polyakov
2009-01-22 23:34                                       ` Kyle McMartin
2009-01-22 23:41                                         ` Ingo Molnar
2009-01-22 23:28                                     ` Evgeniy Polyakov
2009-01-22 22:16                                 ` Ingo Molnar
2009-01-22 22:24                                   ` Pekka Enberg
2009-01-23  0:16                                 ` Andrew Morton
2009-01-23  0:30                                   ` Greg KH
2009-01-09  2:30     ` Harvey Harrison
2009-01-09 11:25     ` KOSAKI Motohiro
2009-01-09 12:02     ` Alan Cox
2009-01-09 21:56       ` Linus Torvalds
2009-01-09 22:08         ` Andrew Morton
2009-01-09 22:12           ` Linus Torvalds
2009-01-09 22:26             ` Alan Cox
2009-01-09 22:36               ` Harvey Harrison
2009-01-11  3:01         ` Phillip Lougher
2009-01-11  3:06           ` H. Peter Anvin
2009-01-09 16:32     ` Geert Uytterhoeven

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