[lustre-devel] [PATCH 26/29] staging: lustre: ptlrpc: do not switch out-of-date context

James Simmons jsimmons at infradead.org
Thu Oct 27 15:12:00 PDT 2016

From: Sebastien Buisson <sebastien.buisson at bull.net>

When trying to replace a dead sec context with a new one, we must
ensure the new context is already up-to-date.
If it is not the case, just return from sptlrpc_req_replace_dead_ctx()
and come later when the new context has been updated.

Signed-off-by: Sebastien Buisson <sebastien.buisson at bull.net>
Intel-bug-id: https://jira.hpdd.intel.com/browse/LU-6536
Reviewed-on: http://review.whamcloud.com/15708
Reviewed-by: Mike Pershin <mike.pershin at intel.com>
Reviewed-by: John L. Hammond <john.hammond at intel.com>
Reviewed-by: Oleg Drokin <oleg.drokin at intel.com>
Signed-off-by: James Simmons <jsimmons at infradead.org>
 drivers/staging/lustre/lustre/ptlrpc/sec.c |    7 +++++++
 1 files changed, 7 insertions(+), 0 deletions(-)

diff --git a/drivers/staging/lustre/lustre/ptlrpc/sec.c b/drivers/staging/lustre/lustre/ptlrpc/sec.c
index 12f02ed..e860df7 100644
--- a/drivers/staging/lustre/lustre/ptlrpc/sec.c
+++ b/drivers/staging/lustre/lustre/ptlrpc/sec.c
@@ -515,6 +515,13 @@ static int sptlrpc_req_replace_dead_ctx(struct ptlrpc_request *req)
+	} else if (unlikely(!test_bit(PTLRPC_CTX_UPTODATE_BIT, &newctx->cc_flags))) {
+		/*
+		 * new ctx not up to date yet
+		 */
+		       "ctx (%p, fl %lx) doesn't switch, not up to date yet\n",
+		       newctx, newctx->cc_flags);
 	} else {
 		 * it's possible newctx == oldctx if we're switching

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