From: Joe Perches <joe@perches.com>
Date: Wed, 5 Oct 2011 00:43:07 +0000 (+1100)
Subject: mm/vmalloc.c: report more vmalloc failures
X-Git-Tag: next-20111013~1^2~161
X-Git-Url: https://git.karo-electronics.de/?a=commitdiff_plain;h=70a3ac9bd7d80f6b1b9fca28e066415aebfb0f28;p=karo-tx-linux.git

mm/vmalloc.c: report more vmalloc failures

Some vmalloc failure paths do not report OOM conditions.

Add warn_alloc_failed, which also does a dump_stack, to those failure
paths.

This allows more site specific vmalloc failure logging message printks to
be removed.

Signed-off-by: Joe Perches <joe@perches.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
---

diff --git a/mm/vmalloc.c b/mm/vmalloc.c
index 08ab0aa1406c..b669aa6f6caf 100644
--- a/mm/vmalloc.c
+++ b/mm/vmalloc.c
@@ -1625,13 +1625,12 @@ void *__vmalloc_node_range(unsigned long size, unsigned long align,
 
 	size = PAGE_ALIGN(size);
 	if (!size || (size >> PAGE_SHIFT) > totalram_pages)
-		return NULL;
+		goto fail;
 
 	area = __get_vm_area_node(size, align, VM_ALLOC | VM_UNLIST,
 				  start, end, node, gfp_mask, caller);
-
 	if (!area)
-		return NULL;
+		goto fail;
 
 	addr = __vmalloc_area_node(area, gfp_mask, prot, node, caller);
 
@@ -1649,6 +1648,12 @@ void *__vmalloc_node_range(unsigned long size, unsigned long align,
 	kmemleak_alloc(addr, real_size, 3, gfp_mask);
 
 	return addr;
+
+fail:
+	warn_alloc_failed(gfp_mask, 0,
+			  "vmalloc: allocation failure: %lu bytes\n",
+			  real_size);
+	return NULL;
 }
 
 /**