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.
Changelog:
v2->v1: change enum from READA_BACK to READA_FORWARD, since according
to the logic of the source, it should reada_for_search forward, not
backward.
And, Reference:
commit e4058b54d1e4 ("btrfs: cleanup, use enum values for btrfs_path reada")
v3->v2: add commit message to make it easy to understand. And split it
to two patch.
Signed-off-by: Gu JinXiang <gujx@xxxxxxxxxxxxxx>
---
fs/btrfs/free-space-tree.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/fs/btrfs/free-space-tree.c b/fs/btrfs/free-space-tree.c
index fe5e0324dca9..d7b6c0017143 100644
--- a/fs/btrfs/free-space-tree.c
+++ b/fs/btrfs/free-space-tree.c
@@ -1071,7 +1071,7 @@ static int populate_free_space_tree(struct btrfs_trans_handle *trans,
path = btrfs_alloc_path();
if (!path)
return -ENOMEM;
- path->reada = 1;
+ path->reada = READA_FORWARD;
path2 = btrfs_alloc_path();
if (!path2) {
--
2.14.3
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