fs: inode split IO and LRU lists

The use of the same inode list structure (inode->i_list) for two
different list constructs with different lifecycles and purposes
makes it impossible to separate the locking of the different
operations. Therefore, to enable the separation of the locking of
the writeback and reclaim lists, split the inode->i_list into two
separate lists dedicated to their specific tracking functions.

Signed-off-by: Nick Piggin <npiggin@suse.de>
Signed-off-by: Dave Chinner <dchinner@redhat.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>

1 files changed, 3 insertions, 3 deletions

diff --git a/mm/backing-dev.c b/mm/backing-dev.c
index 65d420499a61..15d5097de821 100644
--- a/mm/backing-dev.c
+++ b/mm/backing-dev.c
@@ -74,11 +74,11 @@ static int bdi_debug_stats_show(struct seq_file *m, void *v)
 
         nr_wb = nr_dirty = nr_io = nr_more_io = 0;
         spin_lock(&inode_lock);
-        list_for_each_entry(inode, &wb->b_dirty, i_list)
+        list_for_each_entry(inode, &wb->b_dirty, i_wb_list)
                 nr_dirty++;
-        list_for_each_entry(inode, &wb->b_io, i_list)
+        list_for_each_entry(inode, &wb->b_io, i_wb_list)
                 nr_io++;
-        list_for_each_entry(inode, &wb->b_more_io, i_list)
+        list_for_each_entry(inode, &wb->b_more_io, i_wb_list)
                 nr_more_io++;
         spin_unlock(&inode_lock);