From: Sergey Cheremencev <scherementsev@ddn.com>
Date: Tue, 24 Oct 2023 23:55:20 +0000 (+0400)
Subject: EX-7849 quota: extra debug messages
X-Git-Url: https://git.whamcloud.com/?a=commitdiff_plain;h=02242f6f1ba1867756ee5b91abd2207f646436cf;p=fs%2Flustre-release.git

EX-7849 quota: extra debug messages

Add extra debug messages into qmt to find the
root cause of panic:

  qmt_id_lock_glimpse()) ASSERTION( lqe->lqe_gl )

Signed-off-by: Sergey Cheremencev <scherementsev@ddn.com>
Change-Id: I05377222e1887b660f759ed11de53cd9e4023ed1
Reviewed-on: https://review.whamcloud.com/c/ex/lustre-release/+/52906
Tested-by: jenkins <devops@whamcloud.com>
Tested-by: Maloo <maloo@whamcloud.com>
Reviewed-by: Andreas Dilger <adilger@whamcloud.com>
---

diff --git a/lustre/quota/lquota_entry.c b/lustre/quota/lquota_entry.c
index ae495d8..e52e832 100644
--- a/lustre/quota/lquota_entry.c
+++ b/lustre/quota/lquota_entry.c
@@ -341,6 +341,7 @@ struct lquota_entry *lqe_locate_find(const struct lu_env *env,
 			"hash:%s\n", qid->qid_uid, site->lqs_hash->hs_name);
 		RETURN(ERR_PTR(-ENOMEM));
 	}
+	CDEBUG(D_QUOTA, "Allocated lqe %p\n", new);
 
 	atomic_set(&new->lqe_ref, 1); /* hold 1 for caller */
 	new->lqe_id     = *qid;
@@ -365,7 +366,9 @@ struct lquota_entry *lqe_locate_find(const struct lu_env *env,
 	if (lqe == new)
 		new = NULL;
 out:
-	if (new)
+	if (new) {
+		CDEBUG(D_QUOTA, "new %p lqe %p\n", new, lqe);
 		lqe_putref(new);
+	}
 	RETURN(lqe);
 }
diff --git a/lustre/quota/lquota_internal.h b/lustre/quota/lquota_internal.h
index 2a63af3..e7d1496 100644
--- a/lustre/quota/lquota_internal.h
+++ b/lustre/quota/lquota_internal.h
@@ -276,8 +276,12 @@ static inline void lqe_putref(struct lquota_entry *lqe)
 {
 	LASSERT(lqe != NULL);
 	LASSERT(atomic_read(&lqe->lqe_ref) > 0);
-	if (atomic_dec_and_test(&lqe->lqe_ref))
+	if (atomic_dec_and_test(&lqe->lqe_ref)) {
+		CDEBUG(D_QUOTA, "free lqe %p lqe_gl %d\n", lqe, lqe->lqe_gl);
+		if (unlikely(lqe->lqe_gl))
+			dump_stack();
 		OBD_SLAB_FREE_PTR(lqe, lqe_kmem);
+	}
 }
 
 static inline int lqe_is_master(struct lquota_entry *lqe)