uaccess: provide a generic TASK_SIZE_MAX definition

Define TASK_SIZE_MAX as TASK_SIZE if not otherwise defined.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Palmer Dabbelt <palmerdabbelt@google.com>

diff --git a/include/linux/uaccess.h b/include/linux/uaccess.h
index 70073c8..d0e4376 100644 (file)
--- a/include/linux/uaccess.h
+++ b/include/linux/uaccess.h
@@ -31,6 +31,10 @@ typedef struct {
        /* empty dummy */
 } mm_segment_t;
 
+#ifndef TASK_SIZE_MAX
+#define TASK_SIZE_MAX                  TASK_SIZE
+#endif
+
 #define uaccess_kernel()               (false)
 #define user_addr_max()                        (TASK_SIZE_MAX)