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| author | Bart Van Assche <bart.vanassche@sandisk.com> | 2016-11-21 13:57:41 -0800 |
|---|---|---|
| committer | Doug Ledford <dledford@redhat.com> | 2016-12-14 13:31:37 -0500 |
| commit | 290081b45342ef902ed756f929fa9e4feb9f7dab (patch) | |
| tree | 87e8a19ebe9f1e10b1ec34d4027eb313c2ccbe35 /drivers/infiniband | |
| parent | 3787d9908c4e05af0322613fe7f8c617c1ddb1d5 (diff) | |
| download | linux-stable-290081b45342ef902ed756f929fa9e4feb9f7dab.tar.gz linux-stable-290081b45342ef902ed756f929fa9e4feb9f7dab.tar.bz2 linux-stable-290081b45342ef902ed756f929fa9e4feb9f7dab.zip | |
IB/srp: Make mapping failures easier to debug
Make it easier to figure out what is going on if memory mapping
fails because more memory regions than mr_per_cmd are needed.
Signed-off-by: Bart Van Assche <bart.vanassche@sandisk.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>
Diffstat (limited to 'drivers/infiniband')
| -rw-r--r-- | drivers/infiniband/ulp/srp/ib_srp.c | 12 |
1 files changed, 10 insertions, 2 deletions
diff --git a/drivers/infiniband/ulp/srp/ib_srp.c b/drivers/infiniband/ulp/srp/ib_srp.c index 81cb27f2f0e6..bb9d73daadfa 100644 --- a/drivers/infiniband/ulp/srp/ib_srp.c +++ b/drivers/infiniband/ulp/srp/ib_srp.c @@ -1274,8 +1274,12 @@ static int srp_map_finish_fmr(struct srp_map_state *state, struct ib_pool_fmr *fmr; u64 io_addr = 0; - if (state->fmr.next >= state->fmr.end) + if (state->fmr.next >= state->fmr.end) { + shost_printk(KERN_ERR, ch->target->scsi_host, + PFX "Out of MRs (mr_per_cmd = %d)\n", + ch->target->mr_per_cmd); return -ENOMEM; + } WARN_ON_ONCE(!dev->use_fmr); @@ -1331,8 +1335,12 @@ static int srp_map_finish_fr(struct srp_map_state *state, u32 rkey; int n, err; - if (state->fr.next >= state->fr.end) + if (state->fr.next >= state->fr.end) { + shost_printk(KERN_ERR, ch->target->scsi_host, + PFX "Out of MRs (mr_per_cmd = %d)\n", + ch->target->mr_per_cmd); return -ENOMEM; + } WARN_ON_ONCE(!dev->use_fast_reg); |