From 6306df6b897d7b83b46d7822d633dae9c0bc9dcc Mon Sep 17 00:00:00 2001
From: Alan Cox <alc@FreeBSD.org>
Date: Tue, 10 Aug 2004 21:43:40 +0000
Subject: [PATCH] Add a comment describing pmap_extract_and_hold() noting that
 the protection check still needs implementation on arm.

---
 sys/arm/arm/pmap.c | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/sys/arm/arm/pmap.c b/sys/arm/arm/pmap.c
index d767a7f384f..b94f46bda3d 100644
--- a/sys/arm/arm/pmap.c
+++ b/sys/arm/arm/pmap.c
@@ -3546,6 +3546,13 @@ pmap_extract(pmap_t pm, vm_offset_t va)
 	return (pa);
 }
 
+/*
+ * Atomically extract and hold the physical page with the given
+ * pmap and virtual address pair if that mapping permits the given
+ * protection.
+ *
+ * XXX Need to implement the protection check.
+ */
 vm_page_t
 pmap_extract_and_hold(pmap_t pmap, vm_offset_t va, vm_prot_t prot)
 {