From be8cfc4af15cf611dfeb66a1fb5df43d5f1e280a Mon Sep 17 00:00:00 2001 From: Mark Salter Date: Mon, 24 Sep 2012 17:17:38 -0700 Subject: [PATCH] c/r: prctl: fix build error for no-MMU case Commit 1ad75b9e1628 ("c/r: prctl: add minimal address test to PR_SET_MM") added some address checking to prctl_set_mm() used by checkpoint-restore. This causes a build error for no-MMU systems: kernel/sys.c: In function 'prctl_set_mm': kernel/sys.c:1868:34: error: 'mmap_min_addr' undeclared (first use in this function) The test for mmap_min_addr doesn't make a lot of sense for no-MMU code as noted in commit 6e1415467614 ("NOMMU: Optimise away the {dac_,}mmap_min_addr tests"). This patch defines mmap_min_addr as 0UL in the no-MMU case so that the compiler will optimize away tests for "addr < mmap_min_addr". Signed-off-by: Mark Salter Reviewed-by: Cyrill Gorcunov Cc: [3.6.x] Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/security.h | 1 + 1 file changed, 1 insertion(+) diff --git a/include/linux/security.h b/include/linux/security.h index 3dea6a9d568..d143b8e0195 100644 --- a/include/linux/security.h +++ b/include/linux/security.h @@ -118,6 +118,7 @@ void reset_security_ops(void); extern unsigned long mmap_min_addr; extern unsigned long dac_mmap_min_addr; #else +#define mmap_min_addr 0UL #define dac_mmap_min_addr 0UL #endif -- 2.20.1