THP: page collapsing vs. poisoning [LWN.net]

From:		Hidetoshi Seto <seto.hidetoshi@jp.fujitsu.com>
To:		Andrea Arcangeli <aarcange@redhat.com>, Andi Kleen <andi@firstfloor.org>
Subject:		[PATCH 0/4] THP: page collapsing vs. poisoning
Date:		Thu, 17 Mar 2011 11:30:12 +0900
Message-ID:		<4D817234.9070106@jp.fujitsu.com>
Cc:		Andrew Morton <akpm@linux-foundation.org>, Huang Ying <ying.huang@intel.com>, Jin Dongming <jin.dongming@np.css.fujitsu.com>, linux-kernel@vger.kernel.org
Archive-link:		Article, Thread

This patch set will improve system availability by allowing us to
avoid system panic in some special cases during page collapsing:
replacing a chunk of normal pages by a THP(Transparent Huge Page).

Hidetoshi Seto (4):
      Lock the new THP when collapsing pages
      Free the collapsed pages after the new THP is mapped.
      Check whether pages are poisoned before copying
      Check whether the new THP is poisoned before it is mapped to APL.

 mm/huge_memory.c |   75 ++++++++++++++++++++++++++++++++++++++++++++++-------
 1 files changed, 65 insertions(+), 10 deletions(-)


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