diff options
Diffstat (limited to 'fs/btrfs/extent_map.c')
| -rw-r--r-- | fs/btrfs/extent_map.c | 18 |
1 files changed, 2 insertions, 16 deletions
diff --git a/fs/btrfs/extent_map.c b/fs/btrfs/extent_map.c index 2c726b7b9fa..428fcac45f9 100644 --- a/fs/btrfs/extent_map.c +++ b/fs/btrfs/extent_map.c @@ -155,20 +155,6 @@ static struct rb_node *__tree_search(struct rb_root *root, u64 offset, return NULL; } -/* - * look for an offset in the tree, and if it can't be found, return - * the first offset we can find smaller than 'offset'. - */ -static inline struct rb_node *tree_search(struct rb_root *root, u64 offset) -{ - struct rb_node *prev; - struct rb_node *ret; - ret = __tree_search(root, offset, &prev, NULL); - if (!ret) - return prev; - return ret; -} - /* check to see if two extent_map structs are adjacent and safe to merge */ static int mergable_maps(struct extent_map *prev, struct extent_map *next) { @@ -208,7 +194,7 @@ int unpin_extent_cache(struct extent_map_tree *tree, u64 start, u64 len) write_lock(&tree->lock); em = lookup_extent_mapping(tree, start, len); - WARN_ON(em->start != start || !em); + WARN_ON(!em || em->start != start); if (!em) goto out; @@ -256,7 +242,7 @@ out: * Insert @em into @tree or perform a simple forward/backward merge with * existing mappings. The extent_map struct passed in will be inserted * into the tree directly, with an additional reference taken, or a - * reference dropped if the merge attempt was sucessfull. + * reference dropped if the merge attempt was successfull. */ int add_extent_mapping(struct extent_map_tree *tree, struct extent_map *em) |