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| author | Chuck Lever <chuck.lever@oracle.com> | 2015-10-24 17:26:37 -0400 |
|---|---|---|
| committer | Anna Schumaker <Anna.Schumaker@Netapp.com> | 2015-11-02 13:45:15 -0500 |
| commit | 7b3d770c67bc07db5035999e4f864c5f2ff7b10e (patch) | |
| tree | a13a5fc4365e50461cb2c72eb0d55149769fee61 /include/linux/fpga/fpga-mgr.h | |
| parent | a045178887ebafa9514d6b4cb840ac13a26c8365 (diff) | |
xprtrdma: Re-arm after missed events
ib_req_notify_cq(IB_CQ_REPORT_MISSED_EVENTS) returns a positive
value if WCs were added to a CQ after the last completion upcall
but before the CQ has been re-armed.
Commit 7f23f6f6e388 ("xprtrmda: Reduce lock contention in
completion handlers") assumed that when ib_req_notify_cq() returned
a positive RC, the CQ had also been successfully re-armed, making
it safe to return control to the provider without losing any
completion signals. That is an invalid assumption.
Change both completion handlers to continue polling while
ib_req_notify_cq() returns a positive value.
Fixes: 7f23f6f6e388 ("xprtrmda: Reduce lock contention in ...")
Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
Reviewed-by: Sagi Grimberg <sagig@mellanox.com>
Reviewed-by: Devesh Sharma <devesh.sharma@avagotech.com>
Tested-By: Devesh Sharma <devesh.sharma@avagotech.com>
Signed-off-by: Anna Schumaker <Anna.Schumaker@Netapp.com>
Diffstat (limited to 'include/linux/fpga/fpga-mgr.h')
0 files changed, 0 insertions, 0 deletions