[ARM] 3500/1: fix PXA27x DMA allocation priority

[linux-2.6-omap-h63xx.git] / fs / binfmt_elf.c

diff --git a/fs/binfmt_elf.c b/fs/binfmt_elf.c
index 4349113881fbfc79e7fcf2500e2d13217e6fadc5..537893a16014cbbdd6d72259e795030625e91a77 100644 (file)
--- a/fs/binfmt_elf.c
+++ b/fs/binfmt_elf.c
@@ -500,17 +500,22 @@ out:
 #define INTERPRETER_AOUT 1
 #define INTERPRETER_ELF 2
 
+#ifndef STACK_RND_MASK
+#define STACK_RND_MASK 0x7ff           /* with 4K pages 8MB of VA */
+#endif
 
 static unsigned long randomize_stack_top(unsigned long stack_top)
 {
        unsigned int random_variable = 0;
 
-       if (current->flags & PF_RANDOMIZE)
-               random_variable = get_random_int() % (8*1024*1024);
+       if (current->flags & PF_RANDOMIZE) {
+               random_variable = get_random_int() & STACK_RND_MASK;
+               random_variable <<= PAGE_SHIFT;
+       }
 #ifdef CONFIG_STACK_GROWSUP
-       return PAGE_ALIGN(stack_top + random_variable);
+       return PAGE_ALIGN(stack_top) + random_variable;
 #else
-       return PAGE_ALIGN(stack_top - random_variable);
+       return PAGE_ALIGN(stack_top) - random_variable;
 #endif
 }