diff options
Diffstat (limited to 'fs/btrfs/extent_map.c')
| -rw-r--r-- | fs/btrfs/extent_map.c | 9 |
1 files changed, 0 insertions, 9 deletions
diff --git a/fs/btrfs/extent_map.c b/fs/btrfs/extent_map.c index 71b1ac15535..8a502ee2f23 100644 --- a/fs/btrfs/extent_map.c +++ b/fs/btrfs/extent_map.c @@ -42,7 +42,6 @@ void extent_map_exit(void) void extent_map_tree_init(struct extent_map_tree *tree, gfp_t mask) { tree->map.rb_node = NULL; - tree->last = NULL; spin_lock_init(&tree->lock); } EXPORT_SYMBOL(extent_map_tree_init); @@ -239,7 +238,6 @@ int add_extent_mapping(struct extent_map_tree *tree, merge->in_tree = 0; free_extent_map(merge); } - tree->last = em; out: return ret; } @@ -273,10 +271,6 @@ struct extent_map *lookup_extent_mapping(struct extent_map_tree *tree, u64 end = range_end(start, len); BUG_ON(spin_trylock(&tree->lock)); - em = tree->last; - if (em && end > em->start && start < extent_map_end(em)) - goto found; - rb_node = __tree_search(&tree->map, start, &prev, &next); if (!rb_node && prev) { em = rb_entry(prev, struct extent_map, rb_node); @@ -305,7 +299,6 @@ struct extent_map *lookup_extent_mapping(struct extent_map_tree *tree, found: atomic_inc(&em->refs); - tree->last = em; out: return em; } @@ -327,8 +320,6 @@ int remove_extent_mapping(struct extent_map_tree *tree, struct extent_map *em) BUG_ON(spin_trylock(&tree->lock)); rb_erase(&em->rb_node, &tree->map); em->in_tree = 0; - if (tree->last == em) - tree->last = NULL; return ret; } EXPORT_SYMBOL(remove_extent_mapping); |