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Re: [PATCH 8/8] vmscan: Kick flusher threads to clean pages when reclaim is encountering dirty pages

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From: Christoph Hellwig
Subject: Re: [PATCH 8/8] vmscan: Kick flusher threads to clean pages when reclaim is encountering dirty pages
Date: Monday, July 19, 2010 - 7:23 am

On Mon, Jul 19, 2010 at 02:11:30PM +0100, Mel Gorman wrote:

Where is the laptop-mode magic coming from?

And btw, at least currently wakeup_flusher_threads writes back nr_pages
for each BDI, which might not be what you want.  Then again probably
no caller wants it, but I don't see an easy way to fix it.

--
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[PATCH 0/8] Reduce writeback from page reclaim context V4, Mel Gorman, (Mon Jul 19, 6:11 am)
[PATCH 1/8] vmscan: tracing: Roll up of patches currently ..., Mel Gorman, (Mon Jul 19, 6:11 am)
[PATCH 2/8] vmscan: tracing: Update trace event to track i ..., Mel Gorman, (Mon Jul 19, 6:11 am)
[PATCH 3/8] vmscan: tracing: Update post-processing script ..., Mel Gorman, (Mon Jul 19, 6:11 am)
[PATCH 4/8] vmscan: Do not writeback filesystem pages in d ..., Mel Gorman, (Mon Jul 19, 6:11 am)
[PATCH 5/8] fs,btrfs: Allow kswapd to writeback pages, Mel Gorman, (Mon Jul 19, 6:11 am)
[PATCH 7/8] writeback: sync old inodes first in background ..., Mel Gorman, (Mon Jul 19, 6:11 am)
[PATCH 8/8] vmscan: Kick flusher threads to clean pages wh ..., Mel Gorman, (Mon Jul 19, 6:11 am)
Re: [PATCH 2/8] vmscan: tracing: Update trace event to tra ..., Rik van Riel, (Mon Jul 19, 6:24 am)
Re: [PATCH 3/8] vmscan: tracing: Update post-processing sc ..., Rik van Riel, (Mon Jul 19, 6:32 am)
Re: [PATCH 4/8] vmscan: Do not writeback filesystem pages ..., Christoph Hellwig, (Mon Jul 19, 7:19 am)
Re: [PATCH 7/8] writeback: sync old inodes first in backgr ..., Christoph Hellwig, (Mon Jul 19, 7:21 am)
Re: [PATCH 8/8] vmscan: Kick flusher threads to clean page ..., Christoph Hellwig, (Mon Jul 19, 7:23 am)
Re: [PATCH 2/8] vmscan: tracing: Update trace event to tra ..., Christoph Hellwig, (Mon Jul 19, 7:26 am)
Re: [PATCH 4/8] vmscan: Do not writeback filesystem pages ..., Mel Gorman, (Mon Jul 19, 7:26 am)
Re: [PATCH 8/8] vmscan: Kick flusher threads to clean page ..., Mel Gorman, (Mon Jul 19, 7:37 am)
Re: [PATCH 7/8] writeback: sync old inodes first in backgr ..., Mel Gorman, (Mon Jul 19, 7:40 am)
Re: [PATCH 7/8] writeback: sync old inodes first in backgr ..., Christoph Hellwig, (Mon Jul 19, 7:48 am)
Re: [PATCH 4/8] vmscan: Do not writeback filesystem pages ..., Rik van Riel, (Mon Jul 19, 11:25 am)
Re: [PATCH 5/8] fs,btrfs: Allow kswapd to writeback pages, Rik van Riel, (Mon Jul 19, 11:27 am)
Re: [PATCH 7/8] writeback: sync old inodes first in backgr ..., Rik van Riel, (Mon Jul 19, 11:43 am)
Re: [PATCH 8/8] vmscan: Kick flusher threads to clean page ..., Rik van Riel, (Mon Jul 19, 11:59 am)
Re: [PATCH 4/8] vmscan: Do not writeback filesystem pages ..., Johannes Weiner, (Mon Jul 19, 3:14 pm)
Re: [PATCH 8/8] vmscan: Kick flusher threads to clean page ..., Johannes Weiner, (Mon Jul 19, 3:26 pm)
Re: [PATCH 8/8] vmscan: Kick flusher threads to clean page ..., Johannes Weiner, (Mon Jul 19, 3:48 pm)
Re: [PATCH 8/8] vmscan: Kick flusher threads to clean page ..., Mel Gorman, (Tue Jul 20, 7:10 am)
Re: [PATCH 4/8] vmscan: Do not writeback filesystem pages ..., Johannes Weiner, (Tue Jul 20, 3:02 pm)
Re: [PATCH 8/8] vmscan: Kick flusher threads to clean page ..., Johannes Weiner, (Tue Jul 20, 3:05 pm)
Re: [PATCH 4/8] vmscan: Do not writeback filesystem pages ..., Johannes Weiner, (Wed Jul 21, 4:36 am)
Re: [PATCH 4/8] vmscan: Do not writeback filesystem pages ..., Mel Gorman, (Wed Jul 21, 4:52 am)
Re: [PATCH 4/8] vmscan: Do not writeback filesystem pages ..., KAMEZAWA Hiroyuki, (Wed Jul 21, 5:01 am)
Re: [PATCH 4/8] vmscan: Do not writeback filesystem pages ..., Johannes Weiner, (Wed Jul 21, 6:04 am)
Re: [PATCH 4/8] vmscan: Do not writeback filesystem pages ..., Mel Gorman, (Wed Jul 21, 6:38 am)
Re: [PATCH 4/8] vmscan: Do not writeback filesystem pages ..., Mel Gorman, (Wed Jul 21, 7:27 am)
Re: [PATCH 4/8] vmscan: Do not writeback filesystem pages ..., Johannes Weiner, (Wed Jul 21, 7:28 am)
Re: [PATCH 4/8] vmscan: Do not writeback filesystem pages ..., Mel Gorman, (Wed Jul 21, 7:31 am)
Re: [PATCH 4/8] vmscan: Do not writeback filesystem pages ..., Mel Gorman, (Wed Jul 21, 8:06 am)
Re: [PATCH 4/8] vmscan: Do not writeback filesystem pages ..., KAMEZAWA Hiroyuki, (Wed Jul 21, 4:57 pm)
Re: [PATCH 7/8] writeback: sync old inodes first in backgr ..., Wu Fengguang, (Wed Jul 21, 6:13 pm)
Re: [PATCH 7/8] writeback: sync old inodes first in backgr ..., Wu Fengguang, (Thu Jul 22, 1:52 am)
Re: [PATCH 7/8] writeback: sync old inodes first in backgr ..., Wu Fengguang, (Thu Jul 22, 2:02 am)
Re: [PATCH 4/8] vmscan: Do not writeback filesystem pages ..., Mel Gorman, (Thu Jul 22, 2:19 am)
Re: [PATCH 7/8] writeback: sync old inodes first in backgr ..., Wu Fengguang, (Thu Jul 22, 2:21 am)
Re: [PATCH 4/8] vmscan: Do not writeback filesystem pages ..., KAMEZAWA Hiroyuki, (Thu Jul 22, 2:22 am)
Re: [PATCH 7/8] writeback: sync old inodes first in backgr ..., Mel Gorman, (Thu Jul 22, 2:42 am)
Re: [PATCH 7/8] writeback: sync old inodes first in backgr ..., Mel Gorman, (Thu Jul 22, 3:48 am)
Re: [PATCH 7/8] writeback: sync old inodes first in backgr ..., Minchan Kim, (Thu Jul 22, 8:34 am)
Re: [PATCH 7/8] writeback: sync old inodes first in backgr ..., Wu Fengguang, (Fri Jul 23, 1:33 am)
Re: [PATCH 7/8] writeback: sync old inodes first in backgr ..., Mel Gorman, (Fri Jul 23, 3:57 am)
Re: [PATCH 7/8] writeback: sync old inodes first in backgr ..., Wu Fengguang, (Fri Jul 23, 4:49 am)
Re: [PATCH 7/8] writeback: sync old inodes first in backgr ..., Wu Fengguang, (Fri Jul 23, 4:59 am)
Re: [PATCH 7/8] writeback: sync old inodes first in backgr ..., Wu Fengguang, (Fri Jul 23, 5:20 am)
Re: [PATCH 7/8] writeback: sync old inodes first in backgr ..., KOSAKI Motohiro, (Sun Jul 25, 3:43 am)
Re: [PATCH 7/8] writeback: sync old inodes first in backgr ..., Minchan Kim, (Sun Jul 25, 5:03 am)
Re: [PATCH 7/8] writeback: sync old inodes first in backgr ..., Wu Fengguang, (Sun Jul 25, 8:08 pm)
Re: [PATCH 7/8] writeback: sync old inodes first in backgr ..., Rik van Riel, (Sun Jul 25, 8:11 pm)
Re: [PATCH 7/8] writeback: sync old inodes first in backgr ..., Wu Fengguang, (Sun Jul 25, 8:17 pm)
Re: [PATCH 7/8] writeback: sync old inodes first in backgr ..., Wu Fengguang, (Sun Jul 25, 8:27 pm)
Re: [PATCH 7/8] writeback: sync old inodes first in backgr ..., Minchan Kim, (Sun Jul 25, 9:11 pm)
Re: [PATCH 7/8] writeback: sync old inodes first in backgr ..., Wu Fengguang, (Sun Jul 25, 9:37 pm)
Re: [PATCH 8/8] vmscan: Kick flusher threads to clean page ..., Wu Fengguang, (Mon Jul 26, 12:28 am)
Re: [PATCH 4/8] vmscan: Do not writeback filesystem pages ..., Wu Fengguang, (Mon Jul 26, 1:29 am)
Re: [PATCH 4/8] vmscan: Do not writeback filesystem pages ..., Mel Gorman, (Mon Jul 26, 2:12 am)
Re: [PATCH 8/8] vmscan: Kick flusher threads to clean page ..., Mel Gorman, (Mon Jul 26, 2:26 am)
Re: [PATCH 4/8] vmscan: Do not writeback filesystem pages ..., Wu Fengguang, (Mon Jul 26, 4:19 am)
Re: [PATCH 8/8] vmscan: Kick flusher threads to clean page ..., Wu Fengguang, (Mon Jul 26, 4:27 am)
Re: [PATCH 4/8] vmscan: Do not writeback filesystem pages ..., Mel Gorman, (Mon Jul 26, 5:53 am)
Re: [PATCH 8/8] vmscan: Kick flusher threads to clean page ..., Mel Gorman, (Mon Jul 26, 5:57 am)
Re: [PATCH 4/8] vmscan: Do not writeback filesystem pages ..., Wu Fengguang, (Mon Jul 26, 6:03 am)
Re: [PATCH 8/8] vmscan: Kick flusher threads to clean page ..., Wu Fengguang, (Mon Jul 26, 6:10 am)
Re: [PATCH 7/8] writeback: sync old inodes first in backgr ..., Minchan Kim, (Mon Jul 26, 9:30 am)
Re: [PATCH 7/8] writeback: sync old inodes first in backgr ..., Wu Fengguang, (Mon Jul 26, 3:48 pm)
Re: [PATCH 8/8] vmscan: Kick flusher threads to clean page ..., Wu Fengguang, (Tue Jul 27, 7:24 am)
Re: [PATCH 8/8] vmscan: Kick flusher threads to clean page ..., Wu Fengguang, (Tue Jul 27, 7:34 am)
Re: [PATCH 8/8] vmscan: Kick flusher threads to clean page ..., Mel Gorman, (Tue Jul 27, 7:38 am)
Re: [PATCH 8/8] vmscan: Kick flusher threads to clean page ..., Wu Fengguang, (Tue Jul 27, 7:55 am)
Re: [PATCH 8/8] vmscan: Kick flusher threads to clean page ..., Wu Fengguang, (Tue Jul 27, 8:21 am)