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| author | Wu Fengguang <fengguang.wu@intel.com> | 2010-07-21 22:19:51 -0600 |
|---|---|---|
| committer | Wu Fengguang <fengguang.wu@intel.com> | 2011-06-08 08:25:23 +0800 |
| commit | b7a2441f9966fe3e1be960a876ab52e6029ea005 (patch) | |
| tree | f3e4373e6434bc21a4be983c3174aeb3298bf329 /fs/fs-writeback.c | |
| parent | 3efaf0faba6793cd91298c76315e15de59c13ae0 (diff) | |
| download | lwn-b7a2441f9966fe3e1be960a876ab52e6029ea005.tar.gz lwn-b7a2441f9966fe3e1be960a876ab52e6029ea005.zip | |
writeback: remove writeback_control.more_io
When wbc.more_io was first introduced, it indicates whether there are
at least one superblock whose s_more_io contains more IO work. Now with
the per-bdi writeback, it can be replaced with a simple b_more_io test.
Acked-by: Jan Kara <jack@suse.cz>
Acked-by: Mel Gorman <mel@csn.ul.ie>
Reviewed-by: Minchan Kim <minchan.kim@gmail.com>
Signed-off-by: Wu Fengguang <fengguang.wu@intel.com>
Diffstat (limited to 'fs/fs-writeback.c')
| -rw-r--r-- | fs/fs-writeback.c | 9 |
1 files changed, 2 insertions, 7 deletions
diff --git a/fs/fs-writeback.c b/fs/fs-writeback.c index d0553f33fb50..f43c479feee9 100644 --- a/fs/fs-writeback.c +++ b/fs/fs-writeback.c @@ -560,12 +560,8 @@ static int writeback_sb_inodes(struct super_block *sb, struct bdi_writeback *wb, iput(inode); cond_resched(); spin_lock(&wb->list_lock); - if (wbc->nr_to_write <= 0) { - wbc->more_io = 1; + if (wbc->nr_to_write <= 0) return 1; - } - if (!list_empty(&wb->b_more_io)) - wbc->more_io = 1; } /* b_io is empty */ return 1; @@ -708,7 +704,6 @@ static long wb_writeback(struct bdi_writeback *wb, wbc.older_than_this = &oldest_jif; } - wbc.more_io = 0; wbc.nr_to_write = write_chunk; wbc.pages_skipped = 0; wbc.inodes_written = 0; @@ -740,7 +735,7 @@ static long wb_writeback(struct bdi_writeback *wb, /* * No more inodes for IO, bail */ - if (!wbc.more_io) + if (list_empty(&wb->b_more_io)) break; /* * Nothing written. Wait for some inode to |