uprobes: Change the callsite of uprobe_copy_process()
Preparation for the next patches.
Move the callsite of uprobe_copy_process() in copy_process() down
to the succesfull return. We do not care if copy_process() fails,
uprobe_free_utask() won't be called in this case so the wrong
->utask != NULL doesn't matter.
OTOH, with this change we know that copy_process() can't fail when
uprobe_copy_process() is called, the new task should either return
to user-mode or call do_exit(). This way uprobe_copy_process() can:
1. setup p->utask != NULL if necessary
2. setup uprobes_state.xol_area
3. use task_work_add(p)
Also, move the definition of uprobe_copy_process() down so that it
can see get_utask().
Signed-off-by: Oleg Nesterov <oleg@redhat.com>
Acked-by: Srikar Dronamraju <srikar@linux.vnet.ibm.com>
2 files changed