From: mel@skynet.ie (Mel Gorman)
To: Christoph Lameter <clameter@sgi.com>
Cc: Badari Pulavarty <pbadari@us.ibm.com>,
Chris Mason <chris.mason@oracle.com>,
reiserfs-devel@vger.kernel.org, linux-mm <linux-mm@kvack.org>,
linux-fsdevel <linux-fsdevel@vger.kernel.org>
Subject: Re: migratepage failures on reiserfs
Date: Wed, 7 Nov 2007 14:56:19 +0000 [thread overview]
Message-ID: <20071107145619.GA32737@skynet.ie> (raw)
In-Reply-To: <Pine.LNX.4.64.0711051446130.20927@schroedinger.engr.sgi.com>
On (05/11/07 14:46), Christoph Lameter didst pronounce:
> On Mon, 5 Nov 2007, Mel Gorman wrote:
>
> > The grow_dev_page() pages should be reclaimable even though migration
> > is not supported for those pages? They were marked movable as it was
> > useful for lumpy reclaim taking back pages for hugepage allocations and
> > the like. Would it make sense for memory unremove to attempt migration
> > first and reclaim second?
>
> Note that a page is still movable even if there is no file system method
> for migration available. In that case the page needs to be cleaned before
> it can be moved.
>
Badari, do you know if the pages failed to migrate because they were
dirty or because the filesystem simply had ownership of the pages and
wouldn't let them go?
--
Mel Gorman
Part-time Phd Student Linux Technology Center
University of Limerick IBM Dublin Software Lab
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next prev parent reply other threads:[~2007-11-07 14:56 UTC|newest]
Thread overview: 17+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-10-30 18:27 migratepage failures on reiserfs Badari Pulavarty
2007-10-30 17:54 ` Chris Mason
2007-10-30 21:54 ` Badari Pulavarty
2007-10-30 22:58 ` Chris Mason
2007-10-30 23:08 ` Badari
2007-10-31 0:05 ` Zan Lynx
2007-10-31 16:14 ` Badari Pulavarty
2007-10-31 17:40 ` Chris Mason
2007-11-01 16:38 ` Badari Pulavarty
2007-11-01 15:51 ` Chris Mason
2007-11-01 18:10 ` Badari Pulavarty
2007-11-02 16:46 ` Badari Pulavarty
2007-11-05 10:23 ` Mel Gorman
2007-11-05 13:40 ` Chris Mason
2007-11-05 22:46 ` Christoph Lameter
2007-11-07 14:56 ` Mel Gorman [this message]
2007-11-07 15:58 ` Badari Pulavarty
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