init/Kconfig: re-order CONFIG_EXPERT options to fix menuconfig display

[platform/adaptation/renesas_rcar/renesas_kernel.git] / fs / exec.c

diff --git a/fs/exec.c b/fs/exec.c
index a96a488..963f510 100644 (file)
--- a/fs/exec.c
+++ b/fs/exec.c
@@ -613,7 +613,7 @@ static int shift_arg_pages(struct vm_area_struct *vma, unsigned long shift)
                 * when the old and new regions overlap clear from new_end.
                 */
                free_pgd_range(&tlb, new_end, old_end, new_end,
-                       vma->vm_next ? vma->vm_next->vm_start : 0);
+                       vma->vm_next ? vma->vm_next->vm_start : USER_PGTABLES_CEILING);
        } else {
                /*
                 * otherwise, clean from old_start; this is done to not touch
@@ -622,7 +622,7 @@ static int shift_arg_pages(struct vm_area_struct *vma, unsigned long shift)
                 * for the others its just a little faster.
                 */
                free_pgd_range(&tlb, old_start, old_end, new_end,
-                       vma->vm_next ? vma->vm_next->vm_start : 0);
+                       vma->vm_next ? vma->vm_next->vm_start : USER_PGTABLES_CEILING);
        }
        tlb_finish_mmu(&tlb, new_end, old_end);
 
@@ -898,11 +898,13 @@ static int de_thread(struct task_struct *tsk)
 
                sig->notify_count = -1; /* for exit_notify() */
                for (;;) {
+                       threadgroup_change_begin(tsk);
                        write_lock_irq(&tasklist_lock);
                        if (likely(leader->exit_state))
                                break;
                        __set_current_state(TASK_KILLABLE);
                        write_unlock_irq(&tasklist_lock);
+                       threadgroup_change_end(tsk);
                        schedule();
                        if (unlikely(__fatal_signal_pending(tsk)))
                                goto killed;
@@ -960,6 +962,7 @@ static int de_thread(struct task_struct *tsk)
                if (unlikely(leader->ptrace))
                        __wake_up_parent(leader, leader->parent);
                write_unlock_irq(&tasklist_lock);
+               threadgroup_change_end(tsk);
 
                release_task(leader);
        }
@@ -1027,17 +1030,7 @@ EXPORT_SYMBOL_GPL(get_task_comm);
 void set_task_comm(struct task_struct *tsk, char *buf)
 {
        task_lock(tsk);
-
        trace_task_rename(tsk, buf);
-
-       /*
-        * Threads may access current->comm without holding
-        * the task lock, so write the string carefully.
-        * Readers without a lock may see incomplete new
-        * names but are safe from non-terminating string reads.
-        */
-       memset(tsk->comm, 0, TASK_COMM_LEN);
-       wmb();
        strlcpy(tsk->comm, buf, sizeof(tsk->comm));
        task_unlock(tsk);
        perf_event_comm(tsk);