From: Christoph Hellwig <hch@infradead.org>
To: Richard Weinberger <richard@nod.at>
Cc: "Kirill A. Shutemov" <kirill@shutemov.name>,
linux-fsdevel <linux-fsdevel@vger.kernel.org>,
"linux-mtd@lists.infradead.org" <linux-mtd@lists.infradead.org>,
"linux-mm@kvack.org" <linux-mm@kvack.org>,
"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
Boris Brezillon <boris.brezillon@free-electrons.com>,
Maxime Ripard <maxime.ripard@free-electrons.com>,
David Gstir <david@sigma-star.at>,
Dave Chinner <david@fromorbit.com>,
Artem Bityutskiy <dedekind1@gmail.com>,
"Kirill A. Shutemov" <kirill.shutemov@linux.intel.com>,
Alexander Kaplan <alex@nextthing.co>
Subject: Re: Page migration issue with UBIFS
Date: Tue, 15 Mar 2016 08:37:44 -0700 [thread overview]
Message-ID: <20160315153744.GB28522@infradead.org> (raw)
In-Reply-To: <56E82B18.9040807@nod.at>
On Tue, Mar 15, 2016 at 04:32:40PM +0100, Richard Weinberger wrote:
> > Or if ->page_mkwrite() was called, why the page is not dirty?
>
> BTW: UBIFS does not implement ->migratepage(), could this be a problem?
This might be the reason. I can't reall make sense of
buffer_migrate_page, but it seems to migrate buffer_head state to
the new page.
I'd love to know why CMA even tries to migrate pages that don't have a
->migratepage method, this seems incredibly dangerous to me.
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next prev parent reply other threads:[~2016-03-15 15:37 UTC|newest]
Thread overview: 25+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-03-15 14:16 Page migration issue with UBIFS Richard Weinberger
2016-03-15 15:17 ` Kirill A. Shutemov
2016-03-15 15:25 ` Richard Weinberger
2016-03-15 15:35 ` Christoph Hellwig
2016-03-15 15:47 ` Kirill A. Shutemov
2016-03-15 15:32 ` Richard Weinberger
2016-03-15 15:37 ` Christoph Hellwig [this message]
2016-03-15 16:02 ` Richard Weinberger
2016-03-15 23:18 ` Richard Weinberger
2016-03-16 14:21 ` Kirill A. Shutemov
2016-03-16 14:27 ` Kirill A. Shutemov
2016-03-16 20:47 ` Richard Weinberger
2016-03-16 22:55 ` [PATCH] UBIFS: Implement ->migratepage() Richard Weinberger
2016-03-16 23:12 ` kbuild test robot
2016-03-17 4:39 ` kbuild test robot
2016-03-17 8:09 ` Richard Weinberger
2016-03-17 9:57 ` Vlastimil Babka
2016-03-25 22:53 ` Richard Weinberger
2016-03-17 7:11 ` Page migration issue with UBIFS Joonsoo Kim
2016-03-17 8:13 ` Richard Weinberger
2016-03-17 15:17 ` Joonsoo Kim
2016-03-21 23:00 ` Andrew Morton
2016-03-21 23:06 ` Richard Weinberger
2016-03-21 15:28 ` Christoph Hellwig
2016-03-17 15:25 ` Boris Brezillon
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