From: OGAWA Hirofumi <hirofumi@mail.parknet.co.jp>
Date: Mon, 28 Apr 2008 09:16:28 +0000 (-0700)
Subject: Add balance_dirty_pages_ratelimited() to cont_expand_zero()
X-Git-Tag: v2.6.26-rc1~725
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=061e97469f46f924cf14bbf1dd4805b46986691a;p=pandora-kernel.git

Add balance_dirty_pages_ratelimited() to cont_expand_zero()

On the systems, ftruncate() which expand size for FAT became the cause
of OOM.  The cont_expand_zero() filled all memory with dirty pages,
and since disk is very slow, limit of page scanning was exceeded, then
it triggered OOM.

This adds balance_dirty_pages_ratelimited() to avoid filling memory
with dirty pages.

Signed-off-by: OGAWA Hirofumi <hirofumi@mail.parknet.co.jp>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
---

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