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Re: [PATCH 11/12] vmscan: Write out dirty pages in batch

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From: Christoph Hellwig
Subject: Re: [PATCH 11/12] vmscan: Write out dirty pages in batch
Date: Tuesday, June 15, 2010 - 4:10 am

On Tue, Jun 15, 2010 at 08:55:38PM +1000, Nick Piggin wrote:

I think worrying about indirect blocks really doesn't matter much
these days.  For one thing extent based filesystems have a lot less
of these, and second for a journaling filesystem we only need to log
modification to the indirect blocks and not actually write them back
in place during the sync.  At least for XFS the actual writeback can
happen a lot later, as part of the ordered list of delwri buffers.

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Messages in current thread:
[PATCH 0/12] Avoid overflowing of stack during page reclaim V2, Mel Gorman, (Mon Jun 14, 4:17 am)
[PATCH 01/12] tracing, vmscan: Add trace events for kswapd ..., Mel Gorman, (Mon Jun 14, 4:17 am)
[PATCH 02/12] tracing, vmscan: Add trace events for LRU pa ..., Mel Gorman, (Mon Jun 14, 4:17 am)
[PATCH 03/12] tracing, vmscan: Add trace event when a page ..., Mel Gorman, (Mon Jun 14, 4:17 am)
[PATCH 04/12] tracing, vmscan: Add a postprocessing script ..., Mel Gorman, (Mon Jun 14, 4:17 am)
[PATCH 05/12] vmscan: kill prev_priority completely, Mel Gorman, (Mon Jun 14, 4:17 am)
[PATCH 06/12] vmscan: simplify shrink_inactive_list(), Mel Gorman, (Mon Jun 14, 4:17 am)
[PATCH 07/12] vmscan: Remove unnecessary temporary vars in ..., Mel Gorman, (Mon Jun 14, 4:17 am)
[PATCH 08/12] vmscan: Setup pagevec as late as possible in ..., Mel Gorman, (Mon Jun 14, 4:17 am)
[PATCH 09/12] vmscan: Setup pagevec as late as possible in ..., Mel Gorman, (Mon Jun 14, 4:17 am)
[PATCH 10/12] vmscan: Update isolated page counters outsid ..., Mel Gorman, (Mon Jun 14, 4:17 am)
[PATCH 11/12] vmscan: Write out dirty pages in batch, Mel Gorman, (Mon Jun 14, 4:17 am)
Re: [PATCH 0/12] Avoid overflowing of stack during page re ..., Christoph Hellwig, (Mon Jun 14, 8:10 am)
Re: [PATCH 01/12] tracing, vmscan: Add trace events for ks ..., Rik van Riel, (Mon Jun 14, 8:45 am)
Re: [PATCH 02/12] tracing, vmscan: Add trace events for LR ..., Rik van Riel, (Mon Jun 14, 9:47 am)
Re: [PATCH 03/12] tracing, vmscan: Add trace event when a ..., Rik van Riel, (Mon Jun 14, 9:48 am)
Re: [PATCH 04/12] tracing, vmscan: Add a postprocessing sc ..., Rik van Riel, (Mon Jun 14, 10:55 am)
Re: [PATCH 05/12] vmscan: kill prev_priority completely, Rik van Riel, (Mon Jun 14, 11:04 am)
Re: [PATCH 06/12] vmscan: simplify shrink_inactive_list(), Rik van Riel, (Mon Jun 14, 11:06 am)
Re: [PATCH 07/12] vmscan: Remove unnecessary temporary var ..., Rik van Riel, (Mon Jun 14, 11:14 am)
Re: [PATCH 09/12] vmscan: Setup pagevec as late as possibl ..., Rik van Riel, (Mon Jun 14, 12:24 pm)
Re: [PATCH 10/12] vmscan: Update isolated page counters ou ..., Rik van Riel, (Mon Jun 14, 12:42 pm)
Re: [PATCH 01/12] tracing, vmscan: Add trace events for ks ..., Larry Woodman, (Mon Jun 14, 2:01 pm)
Re: [PATCH 02/12] tracing, vmscan: Add trace events for LR ..., Larry Woodman, (Mon Jun 14, 2:02 pm)
Re: [PATCH 03/12] tracing, vmscan: Add trace event when a ..., Larry Woodman, (Mon Jun 14, 2:02 pm)
Re: [PATCH 04/12] tracing, vmscan: Add a postprocessing sc ..., Larry Woodman, (Mon Jun 14, 2:03 pm)
Re: [PATCH 11/12] vmscan: Write out dirty pages in batch, Rik van Riel, (Mon Jun 14, 2:13 pm)
Re: [PATCH 11/12] vmscan: Write out dirty pages in batch, Dave Chinner, (Mon Jun 14, 4:11 pm)
Re: [PATCH 11/12] vmscan: Write out dirty pages in batch, Andrew Morton, (Mon Jun 14, 4:21 pm)
Re: [PATCH 0/12] Avoid overflowing of stack during page re ..., KAMEZAWA Hiroyuki, (Mon Jun 14, 5:08 pm)
Re: [PATCH 11/12] vmscan: Write out dirty pages in batch, Dave Chinner, (Mon Jun 14, 5:39 pm)
Re: [PATCH 11/12] vmscan: Write out dirty pages in batch, Rik van Riel, (Mon Jun 14, 6:16 pm)
Re: [PATCH 11/12] vmscan: Write out dirty pages in batch, Andrew Morton, (Mon Jun 14, 6:39 pm)
Re: [PATCH 11/12] vmscan: Write out dirty pages in batch, Andrew Morton, (Mon Jun 14, 6:45 pm)
Re: [PATCH 11/12] vmscan: Write out dirty pages in batch, Dave Chinner, (Mon Jun 14, 8:20 pm)
Re: [PATCH 11/12] vmscan: Write out dirty pages in batch, Rik van Riel, (Mon Jun 14, 9:08 pm)
Re: [PATCH 11/12] vmscan: Write out dirty pages in batch, Andrew Morton, (Mon Jun 14, 9:15 pm)
Re: [PATCH 11/12] vmscan: Write out dirty pages in batch, Andrew Morton, (Mon Jun 14, 9:37 pm)
Re: [PATCH 11/12] vmscan: Write out dirty pages in batch, Nick Piggin, (Mon Jun 14, 10:12 pm)
[patch] mm: vmscan fix mapping use after free, Nick Piggin, (Mon Jun 14, 10:43 pm)
Re: [PATCH 11/12] vmscan: Write out dirty pages in batch, Dave Chinner, (Mon Jun 14, 11:36 pm)
Re: [PATCH 06/12] vmscan: simplify shrink_inactive_list(), Mel Gorman, (Tue Jun 15, 3:13 am)
Re: [PATCH 11/12] vmscan: Write out dirty pages in batch, Mel Gorman, (Tue Jun 15, 3:18 am)
Re: [PATCH 08/12] vmscan: Setup pagevec as late as possibl ..., Christoph Hellwig, (Tue Jun 15, 3:47 am)
Re: [PATCH 11/12] vmscan: Write out dirty pages in batch, Christoph Hellwig, (Tue Jun 15, 3:53 am)
Re: [PATCH 11/12] vmscan: Write out dirty pages in batch, Nick Piggin, (Tue Jun 15, 3:55 am)
Re: [PATCH 11/12] vmscan: Write out dirty pages in batch, Christoph Hellwig, (Tue Jun 15, 3:57 am)
Re: [PATCH 11/12] vmscan: Write out dirty pages in batch, Christoph Hellwig, (Tue Jun 15, 4:01 am)
Re: [PATCH 11/12] vmscan: Write out dirty pages in batch, Christoph Hellwig, (Tue Jun 15, 4:08 am)
Re: [PATCH 11/12] vmscan: Write out dirty pages in batch, Christoph Hellwig, (Tue Jun 15, 4:10 am)
Re: [PATCH 11/12] vmscan: Write out dirty pages in batch, Mel Gorman, (Tue Jun 15, 4:11 am)
Re: [PATCH 11/12] vmscan: Write out dirty pages in batch, Nick Piggin, (Tue Jun 15, 4:13 am)
Re: [PATCH 11/12] vmscan: Write out dirty pages in batch, Nick Piggin, (Tue Jun 15, 4:20 am)
Re: [PATCH 11/12] vmscan: Write out dirty pages in batch, Mel Gorman, (Tue Jun 15, 4:43 am)
Re: [PATCH 0/12] Avoid overflowing of stack during page re ..., Mel Gorman, (Tue Jun 15, 4:45 am)
Re: [PATCH 0/12] Avoid overflowing of stack during page re ..., Mel Gorman, (Tue Jun 15, 4:49 am)
Re: [PATCH 11/12] vmscan: Write out dirty pages in batch, tytso, (Tue Jun 15, 6:07 am)
Re: [patch] mm: vmscan fix mapping use after free, Mel Gorman, (Tue Jun 15, 6:23 am)
Re: [PATCH 11/12] vmscan: Write out dirty pages in batch, Rik van Riel, (Tue Jun 15, 6:32 am)
Re: [PATCH 11/12] vmscan: Write out dirty pages in batch, Mel Gorman, (Tue Jun 15, 8:44 am)
Re: [PATCH 08/12] vmscan: Setup pagevec as late as possibl ..., Mel Gorman, (Tue Jun 15, 8:56 am)
Re: [PATCH 11/12] vmscan: Write out dirty pages in batch, Dave Chinner, (Tue Jun 15, 4:20 pm)
Re: [PATCH 11/12] vmscan: Write out dirty pages in batch, Nick Piggin, (Tue Jun 15, 11:04 pm)
Re: [PATCH 05/12] vmscan: kill prev_priority completely, Andrew Morton, (Wed Jun 16, 4:37 pm)
Re: [PATCH 08/12] vmscan: Setup pagevec as late as possibl ..., Andrew Morton, (Wed Jun 16, 4:43 pm)
Re: [PATCH 05/12] vmscan: kill prev_priority completely, Rik van Riel, (Wed Jun 16, 4:45 pm)
Re: [PATCH 09/12] vmscan: Setup pagevec as late as possibl ..., Andrew Morton, (Wed Jun 16, 4:48 pm)
Re: [PATCH 05/12] vmscan: kill prev_priority completely, Andrew Morton, (Wed Jun 16, 5:18 pm)
Re: [PATCH 05/12] vmscan: kill prev_priority completely, Rik van Riel, (Wed Jun 16, 5:34 pm)
Re: [PATCH 08/12] vmscan: Setup pagevec as late as possibl ..., Mel Gorman, (Thu Jun 17, 3:30 am)
Re: [PATCH 09/12] vmscan: Setup pagevec as late as possibl ..., Mel Gorman, (Thu Jun 17, 3:46 am)
Re: [PATCH 05/12] vmscan: kill prev_priority completely, KOSAKI Motohiro, (Fri Jun 25, 1:29 am)
Re: [PATCH 05/12] vmscan: kill prev_priority completely, Mel Gorman, (Mon Jun 28, 3:35 am)