[PATCH 4/6] writeback: remove unused nonblocking and congestion checks (xfs)

[Wu Fengguang]

No one is calling wb_writeback and write_cache_pages with
wbc.nonblocking=1 any more. And lumpy pageout will want to do
nonblocking writeback without the congestion wait.

CC: Dave Chinner <david@xxxxxxxxxxxxx> 
CC: Christoph Hellwig <hch@xxxxxxxxxxxxx>
Signed-off-by: Wu Fengguang <fengguang.wu@xxxxxxxxx>
---
 fs/xfs/linux-2.6/xfs_aops.c |    9 +--------
 1 file changed, 1 insertion(+), 8 deletions(-)

--- linux.orig/fs/xfs/linux-2.6/xfs_aops.c	2009-11-19 16:00:51.000000000 +0800
+++ linux/fs/xfs/linux-2.6/xfs_aops.c	2009-11-19 16:04:33.000000000 +0800
@@ -904,16 +904,9 @@ xfs_convert_page(
 
 	if (startio) {
 		if (count) {
-			struct backing_dev_info *bdi;
-
-			bdi = inode->i_mapping->backing_dev_info;
 			wbc->nr_to_write--;
-			if (bdi_write_congested(bdi)) {
-				wbc->encountered_congestion = 1;
-				done = 1;
-			} else if (wbc->nr_to_write <= 0) {
+			if (wbc->nr_to_write <= 0)
 				done = 1;
-			}
 		}
 		xfs_start_page_writeback(page, !page_dirty, count);
 	}


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