New: SCSI Generic queueing info result never indicates direct data transfer?

http://bugzilla.kernel.org/show_bug.cgi?id=15566

Summary: SCSI Generic queueing info result never indicates
direct data transfer?
Product: IO/Storage
Version: 2.5
Kernel Version: 2.6.18-2.6.32
Platform: All
OS/Version: Linux
Tree: Mainline
Status: NEW
Severity: normal
Priority: P1
Component: SCSI
AssignedTo: [email protected]
ReportedBy: [email protected]
Regression: No

The sg info result never returns a nonzero result despite SG_FLAG_DIRECT_IO flag and aligned READ_10 and WRITE_10 data buffer. Is direct io occuring as requested? If not, why not? If so, why doesn't the info value behave as documented in the HOWTO?

I've run both over usb (which I can understand why not direct) and to SATA drives that normally work fine with O_DIRECT read/write.

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