fs/proc/task_mmu.c: cleanup the "tail_vma" horror in m_next()
1. Kill the first "vma != NULL" check. Firstly this is not possible, m_next() won't be called if ->start() or the previous ->next() returns NULL. And if it was possible the 2nd "vma != tail_vma" check is buggy, we should not wrongly return ->tail_vma. 2. Make this function readable. The logic is very simple, we should return check "vma != tail" once and return "vm_next || tail_vma". Signed-off-by: NOleg Nesterov <oleg@redhat.com> Acked-by: NKirill A. Shutemov <kirill.shutemov@linux.intel.com> Acked-by: NCyrill Gorcunov <gorcunov@openvz.org> Cc: "Eric W. Biederman" <ebiederm@xmission.com> Signed-off-by: NAndrew Morton <akpm@linux-foundation.org> Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
Showing
想要评论请 注册 或 登录