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| author | Wu Fengguang <fengguang.wu@gmail.com> | 2009-12-03 13:54:25 +0100 |
|---|---|---|
| committer | Jens Axboe <jens.axboe@oracle.com> | 2009-12-03 13:54:25 +0100 |
| commit | 0d99519efef15fd0cf84a849492c7b1deee1e4b7 (patch) | |
| tree | d0f9d922ef73f6b9c4529826878f3cc5567848fd /fs | |
| parent | b17621fed6aa039387e35f9b4d34d98f213e5673 (diff) | |
| download | linux-0d99519efef15fd0cf84a849492c7b1deee1e4b7.tar.gz linux-0d99519efef15fd0cf84a849492c7b1deee1e4b7.tar.bz2 linux-0d99519efef15fd0cf84a849492c7b1deee1e4b7.zip | |
writeback: remove unused nonblocking and congestion checks
- 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.
Signed-off-by: Wu Fengguang <fengguang.wu@intel.com>
Cc: Chris Mason <chris.mason@oracle.com>
Cc: Jens Axboe <jens.axboe@oracle.com>
Cc: Trond Myklebust <Trond.Myklebust@netapp.com>
Cc: Christoph Hellwig <hch@infradead.org>
Cc: Dave Chinner <david@fromorbit.com>
Cc: Evgeniy Polyakov <zbr@ioremap.net>
Cc: Alex Elder <aelder@sgi.com>
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
Diffstat (limited to 'fs')
| -rw-r--r-- | fs/fs-writeback.c | 9 | ||||
| -rw-r--r-- | fs/xfs/linux-2.6/xfs_aops.c | 9 |
2 files changed, 1 insertions, 17 deletions
diff --git a/fs/fs-writeback.c b/fs/fs-writeback.c index 0793961f7699..49bc1b8e8f19 100644 --- a/fs/fs-writeback.c +++ b/fs/fs-writeback.c @@ -639,14 +639,6 @@ static void writeback_inodes_wb(struct bdi_writeback *wb, 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. @@ -770,7 +762,6 @@ static long wb_writeback(struct bdi_writeback *wb, 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); diff --git a/fs/xfs/linux-2.6/xfs_aops.c b/fs/xfs/linux-2.6/xfs_aops.c index c2e30eea74dc..70f989895d15 100644 --- a/fs/xfs/linux-2.6/xfs_aops.c +++ b/fs/xfs/linux-2.6/xfs_aops.c @@ -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); } |