Re: 2.6.16-rc6-mm2

[Christoph Lameter <clameter@sgi.com>]

On Tue, 13 Jun 2006, Cedric Le Goater wrote:

> thanks for the patch ! I gave it a try but req->wb_page seems bogus ?

It seems that req->wb_page is bogus after nfs_clear_page_writeback()
has run. So we need to do the statistics before.

Index: linux-2.6.17-rc6-mm2/fs/nfs/write.c
===================================================================
--- linux-2.6.17-rc6-mm2.orig/fs/nfs/write.c	2006-06-10 11:11:53.051397816 -0700
+++ linux-2.6.17-rc6-mm2/fs/nfs/write.c	2006-06-13 10:52:04.428456013 -0700
@@ -1418,8 +1418,9 @@ static void nfs_commit_done(struct rpc_t
 		dprintk(" mismatch\n");
 		nfs_mark_request_dirty(req);
 	next:
+		if (req->wb_page)
+			dec_zone_page_state(req->wb_page, NR_UNSTABLE);
 		nfs_clear_page_writeback(req);
-		dec_zone_page_state(req->wb_page, NR_UNSTABLE);
 	}
 }
 

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