From: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com>
To: Ben Gamari <bgamari.foss@gmail.com>
Cc: kosaki.motohiro@jp.fujitsu.com,
Minchan Kim <minchan.kim@gmail.com>,
rsync@lists.samba.org, linux-kernel@vger.kernel.org,
linux-mm@kvack.org, Rik van Riel <riel@redhat.com>,
Andrew Morton <akpm@linux-foundation.org>,
Johannes Weiner <hannes@cmpxchg.org>,
Nick Piggin <npiggin@kernel.dk>
Subject: Re: [RFC PATCH] fadvise support in rsync
Date: Wed, 24 Nov 2010 09:17:56 +0900 (JST) [thread overview]
Message-ID: <20101124090749.7BE8.A69D9226@jp.fujitsu.com> (raw)
In-Reply-To: <1290523792-6170-1-git-send-email-bgamari.foss@gmail.com>
> Here is my attempt at adding fadvise support to rsync (against v3.0.7). I do
> this in both the sender (hinting after match_sums()) and the receiver (hinting
> after receive_data()). In principle we could get better granularity if this was
> hooked up within match_sums() (or even the map_ptr() interface) and the receive
> loop in receive_data(), but I wanted to keep things simple at first (any
> comments on these ideas?) . At the moment is for little more than testing.
> Considering the potential negative effects of using FADV_DONTNEED on older
> kernels, it is likely we will want this functionality off by default with a
> command line flag to enable.
Great!
As far as you don't hesitate userland app, we have no reason to hesitate
kernel change. We are only worry about to create no user interface. Because
it's maintainance nightmare.
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next prev parent reply other threads:[~2010-11-24 0:18 UTC|newest]
Thread overview: 54+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-11-21 14:30 [RFC 1/2] deactive invalidated pages Minchan Kim
2010-11-21 14:30 ` [RFC 2/2] Prevent promotion of page in madvise_dontneed Minchan Kim
2010-11-21 14:38 ` Minchan Kim
2010-11-21 16:34 ` Ben Gamari
2010-11-22 0:31 ` Minchan Kim
2010-11-22 22:21 ` Andrew Morton
2010-11-23 4:57 ` Minchan Kim
2010-11-23 9:50 ` Mel Gorman
2010-11-23 23:49 ` Minchan Kim
2010-11-21 15:21 ` [RFC 1/2] deactive invalidated pages Ben Gamari
2010-11-23 7:16 ` KOSAKI Motohiro
2010-11-23 13:48 ` Ben Gamari
2010-11-23 23:48 ` Minchan Kim
2010-11-23 14:49 ` [RFC PATCH] fadvise support in rsync Ben Gamari
2010-11-23 15:35 ` Pádraig Brady
2010-11-24 0:17 ` KOSAKI Motohiro [this message]
2010-11-23 14:49 ` [PATCH 1/3] Add fadvise interface wrapper Ben Gamari
2010-11-23 14:49 ` [PATCH 2/3] Inform kernel of FADV_DONTNEED hint in sender Ben Gamari
2010-11-23 14:49 ` [PATCH 3/3] Inform kernel of FADV_DONTNEED hint in receiver Ben Gamari
2010-11-22 1:17 ` [RFC 1/2] deactive invalidated pages Rik van Riel
2010-11-22 22:14 ` Andrew Morton
2010-11-23 4:52 ` Minchan Kim
2010-11-23 5:01 ` Andrew Morton
2010-11-23 5:23 ` Minchan Kim
2010-11-23 5:22 ` Andrew Morton
2010-11-23 5:45 ` Minchan Kim
2010-11-23 5:48 ` Andrew Morton
2010-11-23 6:05 ` Minchan Kim
2010-11-23 7:15 ` Andrew Morton
2010-11-23 7:44 ` Minchan Kim
2010-11-23 7:53 ` Andrew Morton
2010-11-23 8:02 ` Minchan Kim
2010-11-23 9:43 ` Mel Gorman
2010-11-23 23:32 ` Minchan Kim
2010-11-23 9:38 ` Mel Gorman
2010-11-23 14:55 ` Ben Gamari
2010-11-23 14:58 ` Mel Gorman
2010-11-23 20:35 ` Andrew Morton
2010-11-23 22:10 ` Mel Gorman
2010-11-23 23:45 ` Minchan Kim
2010-11-24 18:01 ` Mel Gorman
2010-11-23 7:16 ` KOSAKI Motohiro
2010-11-23 7:40 ` Minchan Kim
2010-11-23 7:42 ` Andrew Morton
2010-11-23 8:01 ` KOSAKI Motohiro
2010-11-23 8:44 ` Minchan Kim
2010-11-23 9:02 ` KOSAKI Motohiro
2010-11-23 9:05 ` Minchan Kim
2010-11-23 9:07 ` Minchan Kim
2010-11-23 14:57 ` Ben Gamari
2010-11-24 0:13 ` KOSAKI Motohiro
2010-11-23 9:28 ` Mel Gorman
2010-11-23 23:24 ` Minchan Kim
2010-11-24 10:02 ` Mel Gorman
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