From: Chris Horn <hornc@cray.com>
Date: Thu, 11 Jul 2019 20:08:30 +0000 (-0500)
Subject: LU-12441 lnet: Detach rspt when md_threshold is infinite
X-Git-Tag: 2.12.4-RC1~72
X-Git-Url: https://git.whamcloud.com/gitweb?a=commitdiff_plain;h=refs%2Fchanges%2F34%2F36634%2F3;p=fs%2Flustre-release.git

LU-12441 lnet: Detach rspt when md_threshold is infinite

MDs for pings use the infinite threshold on MD operations.
As such they aren't normally unlinkable as determined by
lnet_md_unlinkable(). We can cover this case by checking whether the
refcount is zero and threshold is LNET_MD_THRESH_INF.

Signed-off-by: Chris Horn <hornc@cray.com>
Signed-off-by: Amir Shehata <ashehata@whamcloud.com>
Change-Id: Ib51f84d85005dd2d13dadca059a1d6c42ff3bf59
Reviewed-on: https://review.whamcloud.com/36634
Tested-by: jenkins <devops@whamcloud.com>
Reviewed-by: Serguei Smirnov <ssmirnov@whamcloud.com>
Tested-by: Maloo <maloo@whamcloud.com>
Reviewed-by: Oleg Drokin <green@whamcloud.com>
---

diff --git a/lnet/lnet/lib-msg.c b/lnet/lnet/lib-msg.c
index 6038a71..6e474ab 100644
--- a/lnet/lnet/lib-msg.c
+++ b/lnet/lnet/lib-msg.c
@@ -779,10 +779,12 @@ lnet_msg_detach_md(struct lnet_msg *msg, int cpt, int status)
 		lnet_eq_enqueue_event(md->md_eq, &msg->msg_ev);
 	}
 
-	if (unlink) {
+	if (unlink || (md->md_refcount == 0 &&
+		       md->md_threshold == LNET_MD_THRESH_INF))
 		lnet_detach_rsp_tracker(md, cpt);
+
+	if (unlink)
 		lnet_md_unlink(md);
-	}
 
 	msg->msg_md = NULL;
 }