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: Evgeniy Polyakov Signed-off-by: Wu Fengguang --- drivers/staging/pohmelfs/inode.c | 10 ---------- 1 file changed, 10 deletions(-) --- linux.orig/drivers/staging/pohmelfs/inode.c 2009-11-27 16:34:51.000000000 +0800 +++ linux/drivers/staging/pohmelfs/inode.c 2009-11-27 18:55:03.000000000 +0800 @@ -143,7 +143,6 @@ static int pohmelfs_writepages(struct ad struct inode *inode = mapping->host; struct pohmelfs_inode *pi = POHMELFS_I(inode); struct pohmelfs_sb *psb = POHMELFS_SB(inode->i_sb); - struct backing_dev_info *bdi = mapping->backing_dev_info; int err = 0; int done = 0; int nr_pages; @@ -152,11 +151,6 @@ static int pohmelfs_writepages(struct ad int scanned = 0; int range_whole = 0; - if (wbc->nonblocking && bdi_write_congested(bdi)) { - wbc->encountered_congestion = 1; - return 0; - } - if (wbc->range_cyclic) { index = mapping->writeback_index; /* Start from prev offset */ end = -1; @@ -248,10 +242,6 @@ retry: if (wbc->nr_to_write <= 0) done = 1; - if (wbc->nonblocking && bdi_write_congested(bdi)) { - wbc->encountered_congestion = 1; - done = 1; - } continue; out_continue: -- 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/