From: Theodore Ts'o <tytso@mit.edu>
To: Bernd Schubert <bernd.schubert@fastmail.fm>
Cc: Alexey Lyahkov <alexey.lyashkov@gmail.com>,
Will Huck <will.huckk@gmail.com>, Hugh Dickins <hughd@google.com>,
Andrew Perepechko <anserper@ya.ru>,
linux-ext4@vger.kernel.org, akpm@linux-foundation.org,
linux-mm@kvack.org, mgorman@suse.de
Subject: Re: page eviction from the buddy cache
Date: Sat, 20 Apr 2013 19:57:18 -0400 [thread overview]
Message-ID: <20130420235718.GA28789@thunk.org> (raw)
In-Reply-To: <51730619.3030204@fastmail.fm>
On Sat, Apr 20, 2013 at 11:18:17PM +0200, Bernd Schubert wrote:
> Alex, Andrew,
>
> did you notice the patch Ted just sent?
> ("ext4: mark all metadata I/O with REQ_META")
This patch was sent to fix another issue that was brought up at Linux
Storage, Filesystem, and MM workshop. I did bring up this issue with
Mel Gorman while at LSF/MM, and as a result, tThe mm folks are going
to look into making mark_page_accessed() do the right thing, or
perhaps provide us with new interface. The problem with forcing the
page to be marked as activated is this would cause a TLB flush, which
would be pointless since this these buddy bitmap pages aren't actually
mapped in anywhere.
- Ted
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next prev parent reply other threads:[~2013-04-20 23:57 UTC|newest]
Thread overview: 20+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <51504A40.6020604@ya.ru>
[not found] ` <20130327150743.GC14900@thunk.org>
2013-03-27 19:24 ` page eviction from the buddy cache Hugh Dickins
2013-03-28 5:34 ` Alexey Lyahkov
2013-04-04 1:24 ` Will Huck
2013-04-04 4:51 ` Alexey Lyahkov
2013-04-20 21:18 ` Bernd Schubert
2013-04-20 23:57 ` Theodore Ts'o [this message]
2013-04-22 12:14 ` Alexey Lyahkov
2013-04-23 12:02 ` Bernd Schubert
2013-04-23 12:27 ` Theodore Ts'o
2013-04-23 19:57 ` Hugh Dickins
2013-04-23 22:00 ` Andrew Morton
2013-04-23 22:31 ` Hugh Dickins
2013-04-24 14:26 ` Theodore Ts'o
2013-04-24 21:41 ` Andrew Morton
2013-04-25 8:18 ` Alexey Lyahkov
2013-04-25 14:30 ` Mel Gorman
2013-04-25 18:37 ` Alexey Lyahkov
2013-04-25 22:40 ` Mel Gorman
2013-04-26 6:03 ` Alexey Lyahkov
2013-04-22 12:18 ` Alexey Lyahkov
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