Re: [RFC PATCH 2/2] usb: storage: scsiglue: limit USB3 devices to 2048 sectors

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On Thu, 5 Nov 2015, Oliver Neukum wrote:

> On Wed, 2015-11-04 at 16:26 -0500, Alan Stern wrote:
> > This doesn't need to be stored as one of the usb-storage flags.  And
> > since we are close to running out of flag bits (on 32-bit
> > architectures), it would be better not to use one of them for this.
> 
> Do we want the opposite flag? 25% for known good devices
> is visible.

We don't have a list of known good devices.  Such a list would
undoubtedly be very large, unmanageable in practice.

Since the max_sectors value is exposed in sysfs, we can rely on 
userspace scripts to increase it if the device is known to work well 
with large transfers.

Alan Stern

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