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Subject[PATCH 11/17] lustre/ptlrpc: rq_commit_cb is called for twice
Date
From: Liang Zhen <liang.zhen@intel.com>

If a ptlrpc_request is already on imp::imp_replay_list, when it's
replayed and replied, after_reply() will call req::rq_commit_cb
for the request, then call it again in ptlrpc_free_committed.

Signed-off-by: Liang Zhen <liang.zhen@intel.com>
Reviewed-on: http://review.whamcloud.com/8815
Intel-bug-id: https://jira.hpdd.intel.com/browse/LU-3618
Reviewed-by: Alex Zhuravlev <alexey.zhuravlev@intel.com>
Reviewed-by: Bobi Jam <bobijam@gmail.com>
Reviewed-by: Oleg Drokin <oleg.drokin@intel.com>
Signed-off-by: Oleg Drokin <oleg.drokin@intel.com>
---
drivers/staging/lustre/lustre/ptlrpc/client.c | 6 +++++-
1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/drivers/staging/lustre/lustre/ptlrpc/client.c b/drivers/staging/lustre/lustre/ptlrpc/client.c
index a32b722..b6d831a 100644
--- a/drivers/staging/lustre/lustre/ptlrpc/client.c
+++ b/drivers/staging/lustre/lustre/ptlrpc/client.c
@@ -1313,7 +1313,11 @@ static int after_reply(struct ptlrpc_request *req)
/** version recovery */
ptlrpc_save_versions(req);
ptlrpc_retain_replayable_request(req, imp);
- } else if (req->rq_commit_cb != NULL) {
+ } else if (req->rq_commit_cb != NULL &&
+ list_empty(&req->rq_replay_list)) {
+ /* NB: don't call rq_commit_cb if it's already on
+ * rq_replay_list, ptlrpc_free_committed() will call
+ * it later, see LU-3618 for details */
spin_unlock(&imp->imp_lock);
req->rq_commit_cb(req);
spin_lock(&imp->imp_lock);
--
1.8.5.3


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