tree cde7a8bde2798e4fb3ae28756f6cedd4db9191cc
parent 13f0feafa6b8aead57a2a328e2fca6a5828bf286
author Oleg Nesterov <oleg@redhat.com> 1247189258 +0200
committer James Morris <jmorris@namei.org> 1249901312 +1000

mm_for_maps: shift down_read(mmap_sem) to the caller

mm_for_maps() takes ->mmap_sem after security checks, this looks
strange and obfuscates the locking rules. Move this lock to its
single caller, m_start().

Signed-off-by: Oleg Nesterov <oleg@redhat.com>
Acked-by: Serge Hallyn <serue@us.ibm.com>
Signed-off-by: James Morris <jmorris@namei.org>