crimson/os/seastore/async_cleaner: add should_block_io_on_clean comment

Signed-off-by: Matan Breizman <mbreizma@redhat.com>

diff --git a/src/crimson/os/seastore/async_cleaner.h b/src/crimson/os/seastore/async_cleaner.h
index 458efed23aa9a08724fc927c9f4f6a710dc77201..8d08054bc5a3e576b7a35f864915ca3e2f62eedb 100644 (file)
--- a/src/crimson/os/seastore/async_cleaner.h
+++ b/src/crimson/os/seastore/async_cleaner.h
@@ -1385,6 +1385,7 @@ public:
   bool should_block_io_on_clean() const final {
     assert(background_callback->is_ready());
     if (get_segments_reclaimable() == 0) {
+      // No CLOSED segments to reclaim
       return false;
     }
     auto aratio = get_projected_available_ratio();