X-Git-Url: http://www.pilppa.org/gitweb/gitweb.cgi?a=blobdiff_plain;f=arch%2Fx86%2Fmm%2Fioremap.c;h=6ab3196d12b412979cbfba55467968b513670a49;hb=3dd392a407d15250a501fa109cc1f93fee95ef85;hp=cac6da54203bfdee878d61c2debb71104ce4f0b6;hpb=d403a6484f0341bf0624d17ece46f24f741b6a92;p=linux-2.6-omap-h63xx.git

diff --git a/arch/x86/mm/ioremap.c b/arch/x86/mm/ioremap.c
index cac6da54203..6ab3196d12b 100644
--- a/arch/x86/mm/ioremap.c
+++ b/arch/x86/mm/ioremap.c
@@ -83,6 +83,25 @@ int page_is_ram(unsigned long pagenr)
 	return 0;
 }
 
+int pagerange_is_ram(unsigned long start, unsigned long end)
+{
+	int ram_page = 0, not_rampage = 0;
+	unsigned long page_nr;
+
+	for (page_nr = (start >> PAGE_SHIFT); page_nr < (end >> PAGE_SHIFT);
+	     ++page_nr) {
+		if (page_is_ram(page_nr))
+			ram_page = 1;
+		else
+			not_rampage = 1;
+
+		if (ram_page == not_rampage)
+			return -1;
+	}
+
+	return ram_page;
+}
+
 /*
  * Fix up the linear direct mapping of the kernel to avoid cache attribute
  * conflicts.