- no one is calling wb_writeback and write_cache_pages with wbc.nonblocking=1 any more - lumpy pageout will want to do nonblocking writeback without the congestion wait So remove the congestion checks as suggested by Chris. CC: Chris Mason CC: Jens Axboe Signed-off-by: Wu Fengguang --- fs/fs-writeback.c | 9 --------- 1 file changed, 9 deletions(-) --- linux.orig/fs/fs-writeback.c 2009-11-27 16:35:00.000000000 +0800 +++ linux/fs/fs-writeback.c 2009-11-27 18:54:50.000000000 +0800 @@ -657,14 +657,6 @@ static void writeback_inodes_wb(struct b continue; } - if (wbc->nonblocking && bdi_write_congested(wb->bdi)) { - wbc->encountered_congestion = 1; - if (!is_blkdev_sb) - break; /* Skip a congested fs */ - requeue_io(inode); - continue; /* Skip a congested blockdev */ - } - /* * Was this inode dirtied after sync_sb_inodes was called? * This keeps sync from extra jobs and livelock. @@ -787,7 +779,6 @@ static long wb_writeback(struct bdi_writ break; wbc.more_io = 0; - wbc.encountered_congestion = 0; wbc.nr_to_write = MAX_WRITEBACK_PAGES; wbc.pages_skipped = 0; writeback_inodes_wb(wb, &wbc); -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/