os/bluestore: release aios and pinned buffers on io complete

Once we're done with our IO, clear the aio list so that the pinned buffers
are unpinned.  This ensures we release memory quickly, even if the
TransContext sticks around for a while (e.g., in the osr q).

Signed-off-by: Sage Weil <sage@redhat.com>

diff --git a/src/os/bluestore/BlueStore.cc b/src/os/bluestore/BlueStore.cc
index 56609a34138dbcf22aff389245d8e66a0e1e263c..249fb05033072779c2ee92f7d6e344d76c1cf44f 100644 (file)
--- a/src/os/bluestore/BlueStore.cc
+++ b/src/os/bluestore/BlueStore.cc
@@ -7575,6 +7575,9 @@ void BlueStore::_txc_finish_io(TransContext *txc)
   std::lock_guard<std::mutex> l(osr->qlock);
   txc->state = TransContext::STATE_IO_DONE;
 
+  // release aio contexts (including pinned buffers).
+  txc->ioc.running_aios.clear();
+
   OpSequencer::q_list_t::iterator p = osr->q.iterator_to(*txc);
   while (p != osr->q.begin()) {
     --p;