btrfs: use reada direction enum instead of constant value in populate_free_space_tree
populate_free_space_tree calls function btrfs_search_slot_for_read with
parameter int find_higher = 1, it means that, if no exact match is
found, then use the next higher item. So in function
populate_free_space_tree, use READA_FORWARD to read forward ahead.
This also changes the value from READA_BACK to READA_FORWARD, since
according to the logic, it should reada_for_search forward, not
backward.
Signed-off-by: Gu JinXiang <gujx@cn.fujitsu.com>
Reviewed-by: Nikolay Borisov <nborisov@suse.com>
[ update changelog ]
Signed-off-by: David Sterba <dsterba@suse.com>
diff --git a/fs/btrfs/free-space-tree.c b/fs/btrfs/free-space-tree.c
index fe5e032..d7b6c00 100644
--- a/fs/btrfs/free-space-tree.c
+++ b/fs/btrfs/free-space-tree.c
@@ -1071,7 +1071,7 @@
path = btrfs_alloc_path();
if (!path)
return -ENOMEM;
- path->reada = 1;
+ path->reada = READA_FORWARD;
path2 = btrfs_alloc_path();
if (!path2) {