diff options
| author |   Bart Van Assche <bart.vanassche@sandisk.com> | 2016-04-22 14:14:15 -0700 |
|---|---|---|
| committer |   Doug Ledford <dledford@redhat.com> | 2016-05-12 14:18:56 -0400 |
| commit | ffc548bb3601f0250474afcfa10ceb0b8b8b9764 (patch) | |
| tree | 5aa96222de3017d7d3cea3182b678aaa2b7223a4 /drivers/infiniband/ulp/srp | |
| parent | IB/srp: Introduce target->mr_pool_size (diff) | |
| download | linux-dev-ffc548bb3601f0250474afcfa10ceb0b8b8b9764.tar.xz linux-dev-ffc548bb3601f0250474afcfa10ceb0b8b8b9764.zip | |
IB/srp: Avoid that mapping failure triggers an infinite loop
The srp_queuecommand() function translates ENOMEM into QUEUE_FULL
which causes the SCSI mid-layer to retry the command. All other
error codes are translated into DID_ERROR which causes the SCSI
command to fail. Return E2BIG if mapping will always fail to
prevent that the SCSI mid-layer keeps resubmitting a command
forever.
Signed-off-by: Bart Van Assche <bart.vanassche@sandisk.com>
Cc: Christoph Hellwig <hch@lst.de>
Cc: Sagi Grimberg <sagi@grimberg.me>
Cc: Laurence Oberman <loberman@redhat.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Doug Ledford <dledford@redhat.com>
Diffstat (limited to 'drivers/infiniband/ulp/srp')
| -rw-r--r-- | drivers/infiniband/ulp/srp/ib_srp.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/drivers/infiniband/ulp/srp/ib_srp.c b/drivers/infiniband/ulp/srp/ib_srp.c index 92d2d98c9831..fbd2edbedf05 100644 --- a/drivers/infiniband/ulp/srp/ib_srp.c +++ b/drivers/infiniband/ulp/srp/ib_srp.c @@ -1681,6 +1681,8 @@ map_complete: unmap: srp_unmap_data(scmnd, ch, req); + if (ret == -ENOMEM && req->nmdesc >= target->mr_pool_size) + ret = -E2BIG; return ret; } |