ipc/sem.c: avoid overflow of semop undo (semadj) value

[pandora-kernel.git] / kernel / fork.c

diff --git a/kernel/fork.c b/kernel/fork.c
index 2f11bbe..a17621c 100644 (file)
--- a/kernel/fork.c
+++ b/kernel/fork.c
@@ -800,14 +800,11 @@ void mm_release(struct task_struct *tsk, struct mm_struct *mm)
  * Allocate a new mm structure and copy contents from the
  * mm structure of the passed in task structure.
  */
-struct mm_struct *dup_mm(struct task_struct *tsk)
+static struct mm_struct *dup_mm(struct task_struct *tsk)
 {
        struct mm_struct *mm, *oldmm = current->mm;
        int err;
 
-       if (!oldmm)
-               return NULL;
-
        mm = allocate_mm();
        if (!mm)
                goto fail_nomem;
@@ -1229,7 +1226,6 @@ static struct task_struct *copy_process(unsigned long clone_flags,
        if (!try_module_get(task_thread_info(p)->exec_domain->module))
                goto bad_fork_cleanup_count;
 
-       p->did_exec = 0;
        delayacct_tsk_init(p);  /* Must remain after dup_task_struct() */
        copy_flags(clone_flags, p);
        INIT_LIST_HEAD(&p->children);
@@ -1654,7 +1650,7 @@ SYSCALL_DEFINE0(fork)
        return do_fork(SIGCHLD, 0, 0, NULL, NULL);
 #else
        /* can not support in nommu mode */
-       return(-EINVAL);
+       return -EINVAL;
 #endif
 }
 #endif
@@ -1662,7 +1658,7 @@ SYSCALL_DEFINE0(fork)
 #ifdef __ARCH_WANT_SYS_VFORK
 SYSCALL_DEFINE0(vfork)
 {
-       return do_fork(CLONE_VFORK | CLONE_VM | SIGCHLD, 0, 
+       return do_fork(CLONE_VFORK | CLONE_VM | SIGCHLD, 0,
                        0, NULL, NULL);
 }
 #endif