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Message-Id: <1477606323-30325-27-git-send-email-jsimmons@infradead.org>
Date: Thu, 27 Oct 2016 18:12:00 -0400
From: James Simmons <jsimmons@...radead.org>
To: Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
devel@...verdev.osuosl.org,
Andreas Dilger <andreas.dilger@...el.com>,
Oleg Drokin <oleg.drokin@...el.com>
Cc: Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
Lustre Development List <lustre-devel@...ts.lustre.org>,
Sebastien Buisson <sebastien.buisson@...l.net>,
James Simmons <jsimmons@...radead.org>
Subject: [PATCH 26/29] staging: lustre: ptlrpc: do not switch out-of-date context
From: Sebastien Buisson <sebastien.buisson@...l.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@...l.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@...el.com>
Reviewed-by: John L. Hammond <john.hammond@...el.com>
Reviewed-by: Oleg Drokin <oleg.drokin@...el.com>
Signed-off-by: James Simmons <jsimmons@...radead.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)
set_current_state(TASK_INTERRUPTIBLE);
schedule_timeout(msecs_to_jiffies(MSEC_PER_SEC));
+ } else if (unlikely(!test_bit(PTLRPC_CTX_UPTODATE_BIT, &newctx->cc_flags))) {
+ /*
+ * new ctx not up to date yet
+ */
+ CDEBUG(D_SEC,
+ "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
--
1.7.1
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