linux-kernel - Re: msync(2) bug(?), returns AOP_WRITEPAGE

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Message-ID: <84144f020710260105w358bf6f0m6c373108b9aab9a8@mail.gmail.com>
Date:	Fri, 26 Oct 2007 11:05:14 +0300
From:	"Pekka Enberg" <penberg@...helsinki.fi>
To:	"Hugh Dickins" <hugh@...itas.com>
Cc:	"Erez Zadok" <ezk@...sunysb.edu>, "Ryan Finnie" <ryan@...nie.org>,
	"Andrew Morton" <akpm@...ux-foundation.org>,
	linux-kernel@...r.kernel.org, linux-fsdevel@...r.kernel.org,
	cjwatson@...ntu.com, linux-mm@...ck.org, neilb@...e.de
Subject: Re: msync(2) bug(?), returns AOP_WRITEPAGE_ACTIVATE to userland

Hi Hugh,

On 10/25/07, Hugh Dickins <hugh@...itas.com> wrote:
> @@ -349,10 +349,6 @@ static pageout_t pageout(struct page *pa
>                 res = mapping->a_ops->writepage(page, &wbc);
>                 if (res < 0)
>                         handle_write_error(mapping, page, res);
> -               if (res == AOP_WRITEPAGE_ACTIVATE) {
> -                       ClearPageReclaim(page);
> -                       return PAGE_ACTIVATE;
> -               }

I don't see ClearPageReclaim added anywhere. Is that done on purpose?
Other than that, the patch looks good to me and I think we should
stick it into -mm to punish Andrew for his secret hack ;-).

                                          Pekka
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