[PATCH] user-vm-unlock-2.5.31-A2

This implements CLONE_VM_RELEASE, which lets the child release the 'user
VM' at mm_release() time.

1 files changed, 2 insertions, 0 deletions

diff --git a/include/linux/sched.h b/include/linux/sched.h
index 63a6b938b145..fcd107c3d29c 100644
--- a/include/linux/sched.h
+++ b/include/linux/sched.h
@@ -48,6 +48,7 @@ struct exec_domain;
 #define CLONE_SETTLS	0x00080000	/* create a new TLS for the child */
 #define CLONE_SETTID	0x00100000	/* write the TID back to userspace */
 #define CLONE_DETACHED	0x00200000	/* parent wants no child-exit signal */
+#define CLONE_RELEASE_VM 0x00400000	/* release the userspace VM */
 
 #define CLONE_SIGNAL	(CLONE_SIGHAND | CLONE_THREAD)
 
@@ -306,6 +307,7 @@ struct task_struct {
 
 	wait_queue_head_t wait_chldexit;	/* for wait4() */
 	struct completion *vfork_done;		/* for vfork() */
+	long *user_vm_lock;			/* for CLONE_RELEASE_VM */
 
 	unsigned long rt_priority;
 	unsigned long it_real_value, it_prof_value, it_virt_value;