linux-kernel - Re: [PATCH] coredump_filter: add hugepage core dumping

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Message-ID: <2f11576a0809092353y1e25efeatebf1287d1b818560@mail.gmail.com>
Date:	Wed, 10 Sep 2008 15:53:44 +0900
From:	"KOSAKI Motohiro" <kosaki.motohiro@...fujitsu.com>
To:	"Roland McGrath" <roland@...hat.com>
Cc:	"Hidehiro Kawai" <hidehiro.kawai.ez@...achi.com>,
	"Mel Gorman" <mel@....ul.ie>, "Hugh Dickins" <hugh@...itas.com>,
	"William Irwin" <wli@...omorphy.com>,
	"Adam Litke" <agl@...ibm.com>, LKML <linux-kernel@...r.kernel.org>,
	"Andrew Morton" <akpm@...ux-foundation.org>,
	sugita <yumiko.sugita.yf@...achi.com>,
	"Satoshi OSHIMA" <satoshi.oshima.fk@...achi.com>
Subject: Re: [PATCH] coredump_filter: add hugepage core dumping

> It was certainly not meant to be excluded from any documentation.
>
> To make the description clear, MMF_DUMP_ELF_HEADERS applies when a
> file-backed private mapping would otherwise be elided (based on the other
> bits and whether it's been modified).  If the vma maps offset 0 of the
> file, and that page is readable and starts with ELFMAG, then just that
> first page will be dumped.  (So p_filesz will be PAGE_SIZE rather than 0
> for an elided mapping, or p_memsz for a mapping dumped whole.)

Could you please make the patch.
Then, I'll ack it with presure.

Thanks.
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