diff options
| author | Bart Van Assche <bart.vanassche@sandisk.com> | 2016-05-12 10:50:35 -0700 |
|---|---|---|
| committer | Doug Ledford <dledford@redhat.com> | 2016-05-13 13:46:51 -0400 |
| commit | 509c5f33f4f6dc328d96bf4099ef6589739f22d4 (patch) | |
| tree | 4ed2e3b56ebdcf5976c5427c8de1539c211e5826 /drivers/infiniband/ulp/srp/ib_srp.h | |
| parent | 835ee624c99d0b63797babf25abe208182bb88bf (diff) | |
IB/srp: Prevent mapping failures
If both max_sectors and the queue_depth are high enough it can
happen that the MR pool is depleted temporarily. This causes
the SRP initiator to report mapping failures. Although the SRP
initiator recovers from such mapping failures, prevent that
this can happen by allocating more memory regions.
Additionally, only enable memory registration if at least two
pages can be registered per memory region.
Reported-by: Laurence Oberman <loberman@redhat.com>
Signed-off-by: Bart Van Assche <bart.vanassche@sandisk.com>
Tested-by: Laurence Oberman <loberman@redhat.com>
Cc: Christoph Hellwig <hch@lst.de>
Cc: Sagi Grimberg <sagi@grimberg.me>
Signed-off-by: Doug Ledford <dledford@redhat.com>
Diffstat (limited to 'drivers/infiniband/ulp/srp/ib_srp.h')
| -rw-r--r-- | drivers/infiniband/ulp/srp/ib_srp.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/drivers/infiniband/ulp/srp/ib_srp.h b/drivers/infiniband/ulp/srp/ib_srp.h index a00914cdd44e..26bb9b0a7a63 100644 --- a/drivers/infiniband/ulp/srp/ib_srp.h +++ b/drivers/infiniband/ulp/srp/ib_srp.h @@ -203,6 +203,7 @@ struct srp_target_port { unsigned int scsi_id; unsigned int sg_tablesize; int mr_pool_size; + int mr_per_cmd; int queue_size; int req_ring_size; int comp_vector; |