tree 227351bf31ccc6153879cc900c5d6a822832b645
parent e88dd6c11c5aef74d8b74a062767add53315533b
author Peter Zijlstra <a.p.zijlstra@chello.nl> 1159252260 -0700
committer Linus Torvalds <torvalds@g5.osdl.org> 1159285724 -0700

[PATCH] mm: fixup do_wp_page()

Wrt. the recent modifications in do_wp_page() Hugh Dickins pointed out:

  "I now realize it's right to the first order (normal case) and to the
   second order (ptrace poke), but not to the third order (ptrace poke
   anon page here to be COWed - perhaps can't occur without intervening
   mprotects)."

This patch restores the old COW behaviour for anonymous pages.

Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
Acked-by: Hugh Dickins <hugh@veritas.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>