staging: lustre: ptlrpc: allow blocking asts to be delayed

ptlrpc_import_delay_req() refuses to delay blocking asts when import
is not in LUSTRE_IMP_FULL yet. That leads to client eviction assuming
that it failed to respond.

Allow delays for blocking asts being resent.

Signed-off-by: Vladimir Saveliev <vladimir.saveliev@seagate.com>
Intel-bug-id: https://jira.hpdd.intel.com/browse/LU-8351
Seagate-bug-id: MRP-3500
Reviewed-on: https://review.whamcloud.com/21065
Reviewed-by: Bobi Jam <bobijam@hotmail.com>
Reviewed-by: John L. Hammond <john.hammond@intel.com>
Reviewed-by: Oleg Drokin <oleg.drokin@intel.com>
Signed-off-by: James Simmons <jsimmons@infradead.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/drivers/staging/lustre/lustre/ptlrpc/client.c b/drivers/staging/lustre/lustre/ptlrpc/client.c
index a2a7b87..1da8847 100644 (file)
--- a/drivers/staging/lustre/lustre/ptlrpc/client.c
+++ b/drivers/staging/lustre/lustre/ptlrpc/client.c
@@ -1160,7 +1160,7 @@ static int ptlrpc_import_delay_req(struct obd_import *imp,
                if (atomic_read(&imp->imp_inval_count) != 0) {
                        DEBUG_REQ(D_ERROR, req, "invalidate in flight");
                        *status = -EIO;
-               } else if (imp->imp_dlm_fake || req->rq_no_delay) {
+               } else if (req->rq_no_delay) {
                        *status = -EWOULDBLOCK;
                } else if (req->rq_allow_replay &&
                          (imp->imp_state == LUSTRE_IMP_REPLAY ||

diff --git a/drivers/staging/lustre/lustre/ptlrpc/recover.c b/drivers/staging/lustre/lustre/ptlrpc/recover.c
index c004490..c03e113 100644 (file)
--- a/drivers/staging/lustre/lustre/ptlrpc/recover.c
+++ b/drivers/staging/lustre/lustre/ptlrpc/recover.c
@@ -221,6 +221,7 @@ int ptlrpc_resend(struct obd_import *imp)
        }
        spin_unlock(&imp->imp_lock);
 
+       OBD_FAIL_TIMEOUT(OBD_FAIL_LDLM_ENQUEUE_OLD_EXPORT, 2);
        return 0;
 }