From: James Bottomley <James.Bottomley@HansenPartnership.com>
To: Alan Stern <stern@rowland.harvard.edu>
Cc: Douglas Gilbert <dgilbert@interlog.com>,
Amit Sahrawat <amit.sahrawat83@gmail.com>,
linux-usb@vger.kernel.org, linux-scsi@vger.kernel.org,
linux-kernel@vger.kernel.org, linux-fsdevel@vger.kernel.org,
Christoph Hellwig <hch@infradead.org>
Subject: Re: Re: BUG in kernel: Wrong Handling of USB HDD’s in scsiglue(slave_configure) and scsi/sd(sd_read_cache_type)
Date: Mon, 03 Oct 2011 14:32:35 -0500 [thread overview]
Message-ID: <1317670355.3041.53.camel@dabdike.int.hansenpartnership.com> (raw)
In-Reply-To: <Pine.LNX.4.44L0.1110031408420.1882-100000@iolanthe.rowland.org>
On Mon, 2011-10-03 at 14:10 -0400, Alan Stern wrote:
> > No. You need to also take into account the RBC
> > device parameters mode page if present. See above.
>
> All right, suppose neither page is present. Does it then make sense to
> assume by default that write caching is enabled?
You're the USB expert ... if we do that, we'll start sending
SYNCHRONIZE_CACHE commands down to a whole slew of devices we didn't
before ... is that going to cause problems with any USB SATLs?
James
next prev parent reply other threads:[~2011-10-03 19:32 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <CADDb1s2bVY04G1fZ=3KwCagZHm_dOmLPxsUBKven7=iBo_nU-g@mail.gmail.com>
2011-10-03 14:25 ` Alan Stern
2011-10-03 16:06 ` Douglas Gilbert
2011-10-03 18:10 ` Alan Stern
2011-10-03 19:32 ` James Bottomley [this message]
2011-10-03 19:53 ` Alan Stern
2011-09-30 17:56 Amit Sahrawat
2011-09-30 18:17 ` Alan Stern
2011-09-30 18:36 ` Amit Sahrawat
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