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authorBart Van Assche <bart.vanassche@sandisk.com>2016-11-21 22:57:41 +0100
committerDoug Ledford <dledford@redhat.com>2016-12-14 19:31:37 +0100
commit290081b45342ef902ed756f929fa9e4feb9f7dab (patch)
tree87e8a19ebe9f1e10b1ec34d4027eb313c2ccbe35 /drivers
parentIB/srp: Make login failures easier to debug (diff)
downloadlinux-290081b45342ef902ed756f929fa9e4feb9f7dab.tar.xz
linux-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')
-rw-r--r--drivers/infiniband/ulp/srp/ib_srp.c12
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);