tree 0b0a6b6a54c2a80de86426a74367ec4b1f089b61
parent 2545f038f4af0ff9945d47c10f988418dda50140
author Daisuke Nishimura <nishimura@mxp.nes.nec.co.jp> 1256601023 -0700
committer Linus Torvalds <torvalds@linux-foundation.org> 1256827172 -0700

mm: don't call pte_unmap() against an improper pte

There are some places where we do like:

	pte = pte_map();
	do {
		(do break in some conditions)
	} while (pte++, ...);
	pte_unmap(pte - 1);

But if the loop breaks at the first loop, pte_unmap() unmaps invalid pte.

This patch is a fix for this problem.

Signed-off-by: Daisuke Nishimura <nishimura@mxp.nes.nec.co.jp>
Reviewd-by: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>
Acked-by: Hugh Dickins <hugh.dickins@tiscali.co.uk>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>