From: Alexey Lyashkov <[email protected]>

To test proper behavior of clients returning errors on ASTs
we can induce a failure with setting OBD_FAIL_LDLM_BL_CALLBACK_NET.
Handle the new additonal case of cfs_fail_err being set as well
so that the cfs_fail_err can be sent back in a reply.

Signed-off-by: Alexey Lyashkov <[email protected]>
Intel-bug-id: https://jira.hpdd.intel.com/browse/LU-5581
Xyratex-bug-id: MRP-2041
Reviewed-on: http://review.whamcloud.com/11752
Reviewed-by: James Simmons <[email protected]>
Reviewed-by: Oleg Drokin <[email protected]>
Signed-off-by: James Simmons <[email protected]>
---
 drivers/staging/lustre/lustre/ldlm/ldlm_lockd.c |    5 ++++-
 1 files changed, 4 insertions(+), 1 deletions(-)

diff --git a/drivers/staging/lustre/lustre/ldlm/ldlm_lockd.c 
b/drivers/staging/lustre/lustre/ldlm/ldlm_lockd.c
index b91b26d..ff2c28e 100644
--- a/drivers/staging/lustre/lustre/ldlm/ldlm_lockd.c
+++ b/drivers/staging/lustre/lustre/ldlm/ldlm_lockd.c
@@ -559,8 +559,11 @@ static int ldlm_callback_handler(struct ptlrpc_request 
*req)
 
        switch (lustre_msg_get_opc(req->rq_reqmsg)) {
        case LDLM_BL_CALLBACK:
-               if (OBD_FAIL_CHECK(OBD_FAIL_LDLM_BL_CALLBACK_NET))
+               if (OBD_FAIL_CHECK(OBD_FAIL_LDLM_BL_CALLBACK_NET)) {
+                       if (cfs_fail_err)
+                               ldlm_callback_reply(req, -(int)cfs_fail_err);
                        return 0;
+               }
                break;
        case LDLM_CP_CALLBACK:
                if (OBD_FAIL_CHECK(OBD_FAIL_LDLM_CP_CALLBACK_NET))
-- 
1.7.1

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