diff options
Diffstat (limited to 'fs/btrfs/extent_map.c')
| -rw-r--r-- | fs/btrfs/extent_map.c | 6 |
1 files changed, 3 insertions, 3 deletions
diff --git a/fs/btrfs/extent_map.c b/fs/btrfs/extent_map.c index 7ef3397a266..e241699024d 100644 --- a/fs/btrfs/extent_map.c +++ b/fs/btrfs/extent_map.c @@ -981,7 +981,7 @@ int find_first_extent_bit(struct extent_map_tree *tree, u64 start, struct extent_state *state; int ret = 1; - write_lock_irq(&tree->lock); + read_lock_irq(&tree->lock); /* * this search will find all the extents that end after * our range starts. @@ -993,7 +993,7 @@ int find_first_extent_bit(struct extent_map_tree *tree, u64 start, while(1) { state = rb_entry(node, struct extent_state, rb_node); - if (state->state & bits) { + if (state->end >= start && (state->state & bits)) { *start_ret = state->start; *end_ret = state->end; ret = 0; @@ -1004,7 +1004,7 @@ int find_first_extent_bit(struct extent_map_tree *tree, u64 start, break; } out: - write_unlock_irq(&tree->lock); + read_unlock_irq(&tree->lock); return ret; } EXPORT_SYMBOL(find_first_extent_bit); |