| To: | Dave Chinner <david@xxxxxxxxxxxxx> |
|---|---|
| Subject: | Re: [RFC PATCH 0/5] Reduce filesystem writeback from page reclaim (again) |
| From: | Christoph Hellwig <hch@xxxxxxxxxxxxx> |
| Date: | Thu, 14 Jul 2011 00:51:23 -0400 |
| Cc: | Mel Gorman <mgorman@xxxxxxx>, Linux-MM <linux-mm@xxxxxxxxx>, LKML <linux-kernel@xxxxxxxxxxxxxxx>, XFS <xfs@xxxxxxxxxxx>, Christoph Hellwig <hch@xxxxxxxxxxxxx>, Johannes Weiner <jweiner@xxxxxxxxxx>, Wu Fengguang <fengguang.wu@xxxxxxxxx>, Jan Kara <jack@xxxxxxx>, Rik van Riel <riel@xxxxxxxxxx>, Minchan Kim <minchan.kim@xxxxxxxxx> |
| In-reply-to: | <20110714003340.GZ23038@dastard> |
| References: | <1310567487-15367-1-git-send-email-mgorman@xxxxxxx> <20110714003340.GZ23038@dastard> |
| User-agent: | Mutt/1.5.21 (2010-09-15) |
On Thu, Jul 14, 2011 at 10:33:40AM +1000, Dave Chinner wrote: > patchset. After all, that's what I keep asking for (so we can get > rid of .writepage altogether), and if the numbers don't add up, then > I'll shut up about it. ;) Unfortunately there's a few more users of ->writepage in addition to memory reclaim. The most visible on is page migration, but there's also a write_one_page helper used by a few filesystems that would either need to get a writepage-like callback or a bigger rewrite. I agree that killing of ->writepage would be a worthwhile goal, though. |
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