Merge pull request ceph#60175 from MaxKellermann/misc_optimizations

Misc optimizations

Author: MaxKellermann

src/blk/aio/aio.h

@@ -88,6 +88,7 @@ std::ostream& operator<<(std::ostream& os, const aio_t& aio);
 
 typedef boost::intrusive::list<
   aio_t,
+  boost::intrusive::constant_time_size<false>,
   boost::intrusive::member_hook<
     aio_t,
     boost::intrusive::list_member_hook<>,

src/client/barrier.cc

@@ -119,7 +119,7 @@ void BarrierContext::commit_barrier(barrier_interval &civ)
     std::unique_lock locker(lock);
 
     /* we commit outstanding writes--if none exist, we don't care */
-    if (outstanding_writes.size() == 0)
+    if (outstanding_writes.empty())
       return;
 
     boost::icl::interval_set<uint64_t> cvs;
@@ -174,7 +174,7 @@ void BarrierContext::complete(C_Block_Sync &cbs)
       /* signal waiters */
       barrier->cond.notify_all();
 	/* dispose cleared barrier */
-      if (barrier->write_list.size() == 0) {
+      if (barrier->write_list.empty()) {
 	BarrierList::iterator iter2 =
 	  BarrierList::s_iterator_to(*barrier);
 	active_commits.erase(iter2);

src/client/barrier.h

@@ -45,6 +45,7 @@ class BarrierContext;
 class C_Block_Sync;
 
 typedef boost::intrusive::list< C_Block_Sync,
+				boost::intrusive::constant_time_size<false>,
 				boost::intrusive::member_hook<
 				  C_Block_Sync,
 				  boost::intrusive::list_member_hook<>,
@@ -68,6 +69,7 @@ class Barrier
 };
 
 typedef boost::intrusive::list< Barrier,
+				boost::intrusive::constant_time_size<false>,
 				boost::intrusive::member_hook<
 				  Barrier,
 				  boost::intrusive::list_member_hook<>,