Btrfs: extent_map: use rb_first_cached

[mirror_ubuntu-jammy-kernel.git] / fs / btrfs / volumes.c

diff --git a/fs/btrfs/volumes.c b/fs/btrfs/volumes.c
index 86c2330ac83f83f864abbcb575abc429b34e6056..909c578506eec42671b7de96327cb2121b2be47e 100644 (file)
--- a/fs/btrfs/volumes.c
+++ b/fs/btrfs/volumes.c
@@ -1613,7 +1613,7 @@ static u64 find_next_chunk(struct btrfs_fs_info *fs_info)
 
        em_tree = &fs_info->mapping_tree.map_tree;
        read_lock(&em_tree->lock);
-       n = rb_last(&em_tree->map);
+       n = rb_last(&em_tree->map.rb_root);
        if (n) {
                em = rb_entry(n, struct extent_map, rb_node);
                ret = em->start + em->len;
@@ -7445,7 +7445,7 @@ static int verify_chunk_dev_extent_mapping(struct btrfs_fs_info *fs_info)
        int ret = 0;
 
        read_lock(&em_tree->lock);
-       for (node = rb_first(&em_tree->map); node; node = rb_next(node)) {
+       for (node = rb_first_cached(&em_tree->map); node; node = rb_next(node)) {
                em = rb_entry(node, struct extent_map, rb_node);
                if (em->map_lookup->num_stripes !=
                    em->map_lookup->verified_stripes) {