From: Ben Gras <ben@minix3.org>
Date: Wed, 29 May 2013 11:48:54 +0000 (+0000)
Subject: vm: a bit more informative about failed pagefaults
X-Git-Tag: v3.3.0~953
X-Git-Url: http://zhaoyanbai.com/repos/%22http:/www.isc.org/icons/zlib_tech.html?a=commitdiff_plain;h=refs%2Fchanges%2F00%2F600%2F2;p=minix.git

vm: a bit more informative about failed pagefaults

Change-Id: I2b72dfb9291670cb837dfdb279f519892575d4a6
---

diff --git a/servers/vm/mem_anon.c b/servers/vm/mem_anon.c
index acd346d3c..9adc52419 100644
--- a/servers/vm/mem_anon.c
+++ b/servers/vm/mem_anon.c
@@ -60,8 +60,10 @@ static int anon_pagefault(struct vmproc *vmp, struct vir_region *region,
 
 	assert(ph->ph->refcount > 0);
 
-	if((new_page_cl = alloc_mem(1, allocflags)) == NO_MEM)
+	if((new_page_cl = alloc_mem(1, allocflags)) == NO_MEM) {
+		printf("anon_pagefault: out of memory\n");
 		return ENOMEM;
+	}
 	new_page = CLICK2ABS(new_page_cl);
 
 	/* Totally new block? Create it. */
diff --git a/servers/vm/region.c b/servers/vm/region.c
index 53611931d..d98caf5cb 100644
--- a/servers/vm/region.c
+++ b/servers/vm/region.c
@@ -730,7 +730,7 @@ int len;
 		}
 
 		if(r != OK) {
-			printf("map_pf: memtype->ev_pagefault failed\n");
+			printf("map_pf: pagefault in %s failed\n", ph->memtype->name);
 			if(ph)
 				pb_unreferenced(region, ph, 1);
 			return r;