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-rw-r--r--fs/btrfs/extent-tree.c8
1 files changed, 8 insertions, 0 deletions
diff --git a/fs/btrfs/extent-tree.c b/fs/btrfs/extent-tree.c
index c0bc35f932bf..96223813b618 100644
--- a/fs/btrfs/extent-tree.c
+++ b/fs/btrfs/extent-tree.c
@@ -5466,6 +5466,14 @@ int btrfs_drop_snapshot(struct btrfs_root *root, int update_ref, int for_reloc)
}
}
+ /*
+ * This subvolume is going to be completely dropped, and won't be
+ * recorded as dirty roots, thus pertrans meta rsv will not be freed at
+ * commit transaction time. So free it here manually.
+ */
+ btrfs_qgroup_convert_reserved_meta(root, INT_MAX);
+ btrfs_qgroup_free_meta_all_pertrans(root);
+
if (test_bit(BTRFS_ROOT_IN_RADIX, &root->state))
btrfs_add_dropped_root(trans, root);
else