forced_unqueued indicates that a drive's queued DSM support is
broken. Update sysfs ABI documentation accordingly.
Reported-by: NChristoph Hellwig <hch@infradead.org>
Signed-off-by: NMartin K. Petersen <martin.petersen@oracle.com>
Signed-off-by: NTejun Heo <tj@kernel.org>