tree 226b105cc4c1bbe0b3fe92f2733708a7dc2dedb8
parent 5e43aef530ba39206f7923295388f7ec3c5a7d93
author Oleg Nesterov <oleg@redhat.com> 1274910188 -0700
committer Linus Torvalds <torvalds@linux-foundation.org> 1274976765 -0700

coredump: shift down_write(mmap_sem) into coredump_wait()

- move the cprm.mm_flags checks up, before we take mmap_sem

- move down_write(mmap_sem) and ->core_state check from do_coredump()
  to coredump_wait()

This simplifies the code and makes the locking symmetrical.

Signed-off-by: Oleg Nesterov <oleg@redhat.com>
Cc: David Howells <dhowells@redhat.com>
Cc: Neil Horman <nhorman@tuxdriver.com>
Cc: Roland McGrath <roland@redhat.com>
Cc: Andi Kleen <andi@firstfloor.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>