On Thu, 24 Feb 2011 11:56:55 +0100
Miklos Szeredi [off-list ref] wrote:

On Thu, 2011-02-24 at 08:37 +0900, Minchan Kim wrote:

quoted

On Thu, Feb 24, 2011 at 7:44 AM, Andrew Morton
[off-list ref] wrote:

quoted

On Sun, 20 Feb 2011 08:41:21 +0900
Minchan Kim [off-list ref] wrote:

quoted

Resend.

Reignore.

quoted

he patch is based on mmotm-2011-02-04 +
mm-add-replace_page_cache_page-function-add-freepage-hook.patch.

On Fri, Feb 11, 2011 at 01:33:46AM +0900, Minchan Kim wrote:

quoted

This patch optmizes replace_page_cache_page.

1) remove radix_tree_preload
2) single radix_tree_lookup_slot and replace radix tree slot
3) page accounting optimization if both pages are in same zone.

Cc: Miklos Szeredi <redacted>
Cc: Rik van Riel <redacted>
Cc: KAMEZAWA Hiroyuki <redacted>
Cc: Mel Gorman <redacted>
Signed-off-by: Minchan Kim <redacted>
---
 mm/filemap.c |   61 ++++++++++++++++++++++++++++++++++++++++++++++++---------
 1 files changed, 51 insertions(+), 10 deletions(-)

Hi Miklos,
This patch is totally not tested.
Could you test this patch?

^^^ Because of this.

Is it tested yet?

Miklos. Could you test this?
If you are busy, let me know how to test it. I will.
Thanks.

Grab git version of libfuse and do something like this:

 fuse/example/fusexmp_fh -obig_writes /mnt/fuse/
 dd if=/tmp/random0 of=/mnt/fuse/tmp/random1 bs=1M
 md5sum /tmp/radom0 /tmp/random1

This should exercise the page moving.

I'll review and test the patch when I have some time.

Too late.  It took months to half-finish Miklos's patch and now I'm
sitting on other patches which depend on it, so it's going in.

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