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xprtrdma: Back off rkey when FAST_REG_MR fails 

If posting a FAST_REG_MR Work Reqeust fails, revert the rkey update
to avoid subsequent IB_WC_MW_BIND_ERR completions.

Suggested-by: Steve Wise <swise@opengridcomputing.com>
Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
Signed-off-by: Anna Schumaker <Anna.Schumaker@Netapp.com>
This commit is contained in:
Chuck Lever 2014-07-29 17:24:19 -04:00 committed by Anna Schumaker
parent 0dbb4108a6
commit c93e986a29
1 changed files with 1 additions and 0 deletions
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net/sunrpc/xprtrdma/verbs.c
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@ -1577,6 +1577,7 @@ rpcrdma_register_frmr_external(struct rpcrdma_mr_seg *seg,
if (rc) {
dprintk("RPC: %s: failed ib_post_send for register,"
" status %i\n", __func__, rc);
ib_update_fast_reg_key(mr, --key);
goto out_err;
} else {
seg1->mr_rkey = mr->rkey;