[PATCH trivial] Use BUILD_BUG_ON for VM_STACK_FLAGS &VM_STACK_INCOMPLETE_SETUP

[Michal Hocko]

a8bef8ff has introduced BUG_ON to force that VM_STACK_FLAGS and
VM_STACK_INCOMPLETE_SETUP do not overlap.
The check is compile time so BUILD_BUG_ON is more appropriate.

Signed-off-by: Michal Hocko <mhocko@xxxxxxx>
---
 fs/exec.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)

diff --git a/fs/exec.c b/fs/exec.c
index 5e62d26..cc10876 100644
--- a/fs/exec.c
+++ b/fs/exec.c
@@ -272,7 +272,7 @@ static int __bprm_mm_init(struct linux_binprm *bprm)
 	 * use STACK_TOP because that can depend on attributes which aren't
 	 * configured yet.
 	 */
-	BUG_ON(VM_STACK_FLAGS & VM_STACK_INCOMPLETE_SETUP);
+	BUILD_BUG_ON(VM_STACK_FLAGS & VM_STACK_INCOMPLETE_SETUP);
 	vma->vm_end = STACK_TOP_MAX;
 	vma->vm_start = vma->vm_end - PAGE_SIZE;
 	vma->vm_flags = VM_STACK_FLAGS | VM_STACK_INCOMPLETE_SETUP;
-- 
1.7.4.4

-- 
Michal Hocko
SUSE Labs
SUSE LINUX s.r.o.
Lihovarska 1060/12
190 00 Praha 9    
Czech Republic
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