--- zzzz-none-000/linux-3.10.107/net/ceph/pagelist.c	2017-06-27 09:49:32.000000000 +0000
+++ scorpion-7490-727/linux-3.10.107/net/ceph/pagelist.c	2021-02-04 17:41:59.000000000 +0000
@@ -1,5 +1,6 @@
 #include <linux/module.h>
 #include <linux/gfp.h>
+#include <linux/slab.h>
 #include <linux/pagemap.h>
 #include <linux/highmem.h>
 #include <linux/ceph/pagelist.h>
@@ -13,8 +14,10 @@
 	}
 }
 
-int ceph_pagelist_release(struct ceph_pagelist *pl)
+void ceph_pagelist_release(struct ceph_pagelist *pl)
 {
+	if (!atomic_dec_and_test(&pl->refcnt))
+		return;
 	ceph_pagelist_unmap_tail(pl);
 	while (!list_empty(&pl->head)) {
 		struct page *page = list_first_entry(&pl->head, struct page,
@@ -23,7 +26,7 @@
 		__free_page(page);
 	}
 	ceph_pagelist_free_reserve(pl);
-	return 0;
+	kfree(pl);
 }
 EXPORT_SYMBOL(ceph_pagelist_release);