Remove in_progress_ops

blockstore.h

@@ -233,7 +233,6 @@ class blockstore
     std::deque<obj_ver_id> unsynced_big_writes;
     int unsynced_small_writes = 0;
     std::list<blockstore_operation*> in_progress_syncs;
-    std::set<blockstore_operation*> in_progress_ops; // FIXME purpose of tracking this is unclear
     uint32_t block_order, block_size;
     uint64_t block_count;
     allocator *data_alloc;

blockstore_read.cpp

@@ -126,7 +126,6 @@ int blockstore::dequeue_read(blockstore_operation *read_op)
     }
     read_op->retval = 0;
     read_op->pending_ops = read_op->read_vec.size();
-    in_progress_ops.insert(read_op);
     return 1;
 }
 
@@ -143,6 +142,5 @@ void blockstore::handle_read_event(ring_data_t *data, blockstore_operation *op)
         if (op->retval == 0)
             op->retval = op->len;
         op->callback(op);
-        in_progress_ops.erase(op);
     }
 }

blockstore_sync.cpp

@@ -29,7 +29,6 @@ int blockstore::dequeue_sync(blockstore_operation *op)
         int done = ack_sync(op);
         if (!done)
         {
-            in_progress_ops.insert(op);
             op->prev_sync_count = in_progress_syncs.size();
             op->in_progress_ptr = in_progress_syncs.insert(in_progress_syncs.end(), op);
         }
@@ -206,14 +205,12 @@ int blockstore::ack_sync(blockstore_operation *op)
                 done_syncs++;
                 // Acknowledge next_sync
                 in_progress_syncs.erase(next_sync->in_progress_ptr);
-                in_progress_ops.erase(next_sync);
                 next_sync->retval = 0;
                 next_sync->callback(next_sync);
             }
         }
         // Acknowledge sync
         in_progress_syncs.erase(op->in_progress_ptr);
-        in_progress_ops.erase(op);
         op->retval = 0;
         op->callback(op);
         return 1;

blockstore_write.cpp

@@ -29,7 +29,6 @@ int blockstore::dequeue_write(blockstore_operation *op)
         );
         op->pending_ops = 1;
         op->min_used_journal_sector = op->max_used_journal_sector = 0;
-        in_progress_ops.insert(op);
     }
     else
     {
@@ -111,7 +110,6 @@ int blockstore::dequeue_write(blockstore_operation *op)
         journal.sector_info[journal.cur_sector].usage_count++;
         op->pending_ops = 2;
         op->min_used_journal_sector = op->max_used_journal_sector = 1 + journal.cur_sector;
-        in_progress_ops.insert(op);
     }
     return 1;
 }
@@ -146,7 +144,6 @@ void blockstore::handle_write_event(ring_data_t *data, blockstore_operation *op)
         // Acknowledge write without sync
         op->retval = op->len;
         op->callback(op);
-        in_progress_ops.erase(op);
         // Remember write as unsynced
         if (IS_BIG_WRITE(dirty_it->second.state))
         {