[merged] fs-execc-use-build_bug_on-for-vm_stack_flags-vm_stack_incomplete_setup.patch removed from -mm tree

[merged] fs-execc-use-build_bug_on-for-vm_stack_flags-vm_stack_incomplete_setup.patch removed from -mm tree

[akpm]

The patch titled
     fs/exec.c: use BUILD_BUG_ON for VM_STACK_FLAGS & VM_STACK_INCOMPLETE_SETUP
has been removed from the -mm tree.  Its filename was
     fs-execc-use-build_bug_on-for-vm_stack_flags-vm_stack_incomplete_setup.patch

This patch was dropped because it was merged into mainline or a subsystem tree

The current -mm tree may be found at http://userweb.kernel.org/~akpm/mmotm/

------------------------------------------------------
Subject: fs/exec.c: use BUILD_BUG_ON for VM_STACK_FLAGS & VM_STACK_INCOMPLETE_SETUP
From: Michal Hocko <mhocko@suse.cz>

a8bef8ff ("mm: migration: avoid race between shift_arg_pages() and
rmap_walk() during migration by not migrating temporary stacks")
introduced a BUG_ON() to ensure that VM_STACK_FLAGS and
VM_STACK_INCOMPLETE_SETUP do not overlap.  The check is a compile time
one, so BUILD_BUG_ON is more appropriate.

Signed-off-by: Michal Hocko <mhocko@suse.cz>
Cc: Mel Gorman <mel@csn.ul.ie>
Cc: Richard Weinberger <richard@nod.at>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
---

 fs/exec.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff -puN fs/exec.c~fs-execc-use-build_bug_on-for-vm_stack_flags-vm_stack_incomplete_setup fs/exec.c
--- a/fs/exec.c~fs-execc-use-build_bug_on-for-vm_stack_flags-vm_stack_incomplete_setup
+++ a/fs/exec.c
@@ -277,7 +277,7 @@ static int __bprm_mm_init(struct linux_b
 	 * 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;
_

Patches currently in -mm which might be from mhocko@suse.cz are

origin.patch
memcg-do-not-expose-uninitialized-mem_cgroup_per_node-to-world.patch