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Date: Tue, 27 Nov 2018 12:52:11 +0100
From: Heiko Carstens <heiko.carstens@de.ibm.com>
Subject: Re: [PATCH 3/3] s390/mm: fix mis-accounting of pgtable_bytes
References: <1539621759-5967-1-git-send-email-schwidefsky@de.ibm.com>
 <1539621759-5967-4-git-send-email-schwidefsky@de.ibm.com>
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 <20181127073411.GA3625@osiris>
 <fa0269be-48e5-c987-50b6-4dc94ac8f086@roeck-us.net>
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To: Guenter Roeck <linux@roeck-us.net>
Cc: "Kirill A. Shutemov" <kirill@shutemov.name>, "Kirill A. Shutemov" <kirill.shutemov@linux.intel.com>, Li Wang <liwang@redhat.com>, Janosch Frank <frankja@linux.vnet.ibm.com>, linux-kernel <linux-kernel@vger.kernel.org>, Linux-MM <linux-mm@kvack.org>, Martin Schwidefsky <schwidefsky@de.ibm.com>

On Tue, Nov 27, 2018 at 03:47:13AM -0800, Guenter Roeck wrote:
> >E.g. something like the below. If there aren't any objections, I will
> >provide a proper patch with changelog, etc.
> >
> >diff --git a/kernel/fork.c b/kernel/fork.c
> >index 07cddff89c7b..d7aeec03c57f 100644
> >--- a/kernel/fork.c
> >+++ b/kernel/fork.c
> >@@ -647,8 +647,8 @@ static void check_mm(struct mm_struct *mm)
> >  	}
> >  	if (mm_pgtables_bytes(mm))
> >-		pr_alert("BUG: non-zero pgtables_bytes on freeing mm: %ld\n",
> >-				mm_pgtables_bytes(mm));
> >+		printk_once(KERN_ALERT "BUG: non-zero pgtables_bytes on freeing mm: %=
ld\n",
> >+			    mm_pgtables_bytes(mm));
>=20
> pr_alert_once ?

Already changed and posted:

https://lore.kernel.org/lkml/20181127083603.39041-1-heiko.carstens@de.ibm.c=
om/