Btrfs: fix memory leak in reading btree blocks

[deliverable/linux.git] / fs / btrfs / extent-tree.c

diff --git a/fs/btrfs/extent-tree.c b/fs/btrfs/extent-tree.c
index 0450dc4105339bc0cf14cb1e861ee43d83e27ba6..6ccddbfbec42fa1e7f4a6531deb7ac7a9bf032c9 100644 (file)
--- a/fs/btrfs/extent-tree.c
+++ b/fs/btrfs/extent-tree.c
@@ -3694,6 +3694,8 @@ again:
                        goto again;
                }
                spin_unlock(&cur_trans->dirty_bgs_lock);
+       } else if (ret < 0) {
+               btrfs_cleanup_dirty_bgs(cur_trans, root);
        }
 
        btrfs_free_path(path);
@@ -4901,11 +4903,6 @@ btrfs_calc_reclaim_metadata_size(struct btrfs_root *root,
        u64 expected;
        u64 to_reclaim = 0;
 
-       to_reclaim = min_t(u64, num_online_cpus() * SZ_1M, SZ_16M);
-       if (can_overcommit(root, space_info, to_reclaim,
-                          BTRFS_RESERVE_FLUSH_ALL))
-               return 0;
-
        list_for_each_entry(ticket, &space_info->tickets, list)
                to_reclaim += ticket->bytes;
        list_for_each_entry(ticket, &space_info->priority_tickets, list)
@@ -4913,6 +4910,11 @@ btrfs_calc_reclaim_metadata_size(struct btrfs_root *root,
        if (to_reclaim)
                return to_reclaim;
 
+       to_reclaim = min_t(u64, num_online_cpus() * SZ_1M, SZ_16M);
+       if (can_overcommit(root, space_info, to_reclaim,
+                          BTRFS_RESERVE_FLUSH_ALL))
+               return 0;
+
        used = space_info->bytes_used + space_info->bytes_reserved +
               space_info->bytes_pinned + space_info->bytes_readonly +
               space_info->bytes_may_use;