[TCP]: tcp_simple_retransmit can cause S+L

[linux-2.6-omap-h63xx.git] / include / linux / mm.h

diff --git a/include/linux/mm.h b/include/linux/mm.h
index 3b3e1341163f3075321b487362dc8bba0bab91f3..b695875d63e308bcc9086e5889c0040438f0a363 100644 (file)
--- a/include/linux/mm.h
+++ b/include/linux/mm.h
@@ -235,12 +235,21 @@ static inline int get_page_unless_zero(struct page *page)
 struct page *vmalloc_to_page(const void *addr);
 unsigned long vmalloc_to_pfn(const void *addr);
 
-/* Determine if an address is within the vmalloc range */
+/*
+ * Determine if an address is within the vmalloc range
+ *
+ * On nommu, vmalloc/vfree wrap through kmalloc/kfree directly, so there
+ * is no special casing required.
+ */
 static inline int is_vmalloc_addr(const void *x)
 {
+#ifdef CONFIG_MMU
        unsigned long addr = (unsigned long)x;
 
        return addr >= VMALLOC_START && addr < VMALLOC_END;
+#else
+       return 0;
+#endif
 }
 
 static inline struct page *compound_head(struct page *page)