crimson/.../btree_lba_manager: convert alloc_extent to coroutine

Signed-off-by: Samuel Just <sjust@redhat.com>

diff --git a/src/crimson/os/seastore/lba/btree_lba_manager.h b/src/crimson/os/seastore/lba/btree_lba_manager.h
index 6cbd1bea52592d72f1868854f0e558e59559fcaa..4819b24f44428cad6f4d1d87fc89c387ea753dd7 100644 (file)
--- a/src/crimson/os/seastore/lba/btree_lba_manager.h
+++ b/src/crimson/os/seastore/lba/btree_lba_manager.h
@@ -148,16 +148,11 @@ public:
        refcount,
        ext.get_last_committed_crc(),
        ext)};
-    return seastar::do_with(
-      std::move(alloc_infos),
-      [this, &t, hint](auto &alloc_infos) {
-      return alloc_contiguous_mappings(
-       t, hint, alloc_infos, alloc_policy_t::linear_search
-      ).si_then([](auto cursors) {
-       assert(cursors.size() == 1);
-       return LBAMapping::create_direct(std::move(cursors.front()));
-      });
-    });
+    auto cursors = co_await alloc_contiguous_mappings(
+      t, hint, alloc_infos, alloc_policy_t::linear_search
+    );
+    assert(cursors.size() == 1);
+    co_return LBAMapping::create_direct(std::move(cursors.front()));
   }
 
   alloc_extents_ret alloc_extents(