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From: Luben Tuikov <ltuikov@yahoo.com>
To: Matthew Dharm <mdharm-kernel@one-eyed-alien.net>
Cc: Linus Torvalds <torvalds@linux-foundation.org>,
	linux-kernel@vger.kernel.org, linux-scsi@vger.kernel.org,
	linux-usb@vger.kernel.org, Greg KH <greg@kroah.com>,
	James Bottomley <James.Bottomley@suse.de>
Subject: Re: [PATCH repost 3] [SCSI] Retrieve the Caching mode page
Date: Tue, 23 Nov 2010 01:25:23 -0800 (PST)	[thread overview]
Message-ID: <589506.10541.qm@web31809.mail.mud.yahoo.com> (raw)
In-Reply-To: <20101123050048.GL20296@one-eyed-alien.net>

--- On Mon, 11/22/10, Matthew Dharm <mdharm-kernel@one-eyed-alien.net> wrote:

> As long as you are not changing the command stream that the
> devices see, I
> think this is a reasonable risk to take.

No, not at all.

> What are the consequences if the device returns what appear
> to be a Caching
> Mode Page, but it is actually filled with garbage or
> otherwise inaccurate
> data?

Data corruption would be no different than when determining whether the media is write protected or determining other parameters. A similar question would be "What would the consequences be if the device misreported the media write-protect bit?" I suppose such a device would be quite broken and inoperative.

   Luben


  reply	other threads:[~2010-11-23  9:25 UTC|newest]

Thread overview: 25+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2010-11-22 16:56 [PATCH repost 3] [SCSI] Retrieve the Caching mode page Luben Tuikov
2010-11-22 17:07 ` Linus Torvalds
2010-11-22 19:02   ` Douglas Gilbert
2010-11-23  4:59     ` Matthew Dharm
2010-11-23 18:40       ` Douglas Gilbert
2010-11-22 20:02   ` Luben Tuikov
2010-11-23  5:00     ` Matthew Dharm
2010-11-23  9:25       ` Luben Tuikov [this message]
2010-11-23 14:30         ` Matthew Dharm
2010-11-24  9:02           ` Luben Tuikov
2010-11-24 10:10             ` James Bottomley
2010-11-24 14:48               ` Christoph Hellwig
2010-11-24 14:49               ` Alan Stern
2010-11-24 14:58                 ` James Bottomley
2010-11-24 16:55               ` Luben Tuikov
  -- strict thread matches above, loose matches on Subject: below --
2010-11-23  8:43 Luben Tuikov
2010-12-05 20:53 Luben Tuikov
2010-12-08  0:02 Luben Tuikov
2010-12-08  0:12 ` Greg KH
2010-12-08  5:05   ` James Bottomley
2010-12-08  8:01     ` Luben Tuikov
2010-12-08 15:16     ` Alan Stern
2010-12-08 15:43       ` James Bottomley
2010-12-08 15:57         ` Alan Stern
2010-12-08 16:00           ` Matthew Wilcox

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