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Subject: Re: [PATCH v2 1/2] mm: Move page struct poisoning to
 CONFIG_DEBUG_VM_PAGE_INIT_POISON
References: <20180905211041.3286.19083.stgit@localhost.localdomain>
 <20180905211328.3286.71674.stgit@localhost.localdomain>
From: Dave Hansen <dave.hansen@intel.com>
Message-ID: <185e6fb5-f247-bba2-e082-c3097e78fc04@intel.com>
Date: Wed, 5 Sep 2018 14:34:20 -0700
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To: Alexander Duyck <alexander.duyck@gmail.com>, linux-mm@kvack.org, linux-kernel@vger.kernel.org
Cc: alexander.h.duyck@intel.com, pavel.tatashin@microsoft.com, mhocko@suse.com, akpm@linux-foundation.org, mingo@kernel.org, kirill.shutemov@linux.intel.com

On 09/05/2018 02:13 PM, Alexander Duyck wrote:
> Instead of keeping the value in CONFIG_DEBUG_VM I am adding a new CONFIG
> value called CONFIG_DEBUG_VM_PAGE_INIT_POISON that will control the page
> poisoning independent of the CONFIG_DEBUG_VM option.

I guess this is a reasonable compromise.

If folks see odd 'struct page' corruption, they'll have to know to go
turn this on and reboot, though.