diff options
| author | Julian Wiedmann <jwi@linux.ibm.com> | 2019-06-03 07:47:04 +0200 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2019-08-04 09:33:18 +0200 |
| commit | 4eebf3147cf0e88179cbbde179bc56daf2834111 (patch) | |
| tree | cd92c799cfd25ee3cea501b3bcf542e144d34298 /tools/perf | |
| parent | f4ba42d6f283cf26f701af4c997566fcd63362ea (diff) | |
s390/qdio: handle PENDING state for QEBSM devices
[ Upstream commit 04310324c6f482921c071444833e70fe861b73d9 ]
When a CQ-enabled device uses QEBSM for SBAL state inspection,
get_buf_states() can return the PENDING state for an Output Queue.
get_outbound_buffer_frontier() isn't prepared for this, and any PENDING
buffer will permanently stall all further completion processing on this
Queue.
This isn't a concern for non-QEBSM devices, as get_buf_states() for such
devices will manually turn PENDING buffers into EMPTY ones.
Fixes: 104ea556ee7f ("qdio: support asynchronous delivery of storage blocks")
Signed-off-by: Julian Wiedmann <jwi@linux.ibm.com>
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Diffstat (limited to 'tools/perf')
0 files changed, 0 insertions, 0 deletions