Currently, ufs_mcq_process_cq() writes to the CQ without checking whether
there is available space. This can cause CQ entries to be discarded and
overwritten. The solution is to stop writing when CQ is full and exert
backpressure on the affected SQs. This is similar to how NVMe CQs operate.
Signed-off-by: Ilia Levi <ilia.levi@intel.com>
Reviewed-by: Jeuk Kim <jeuk20.kim@samsung.com>
Signed-off-by: Jeuk Kim <jeuk20.kim@samsung.com>
(cherry picked from commit f78762a3cc)
Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>
851536a836