os/bluestore/BlueStore: For _zero, check whether clear tail_bl.

Signed-off-by: Jianpeng Ma <jianpeng.ma@intel.com>

diff --git a/src/os/bluestore/BlueStore.cc b/src/os/bluestore/BlueStore.cc
index 52f9055083ceb60281fcc5ca98457cc222770f7f..ce1dca18383b71b84c9913c08000a6fe0b8363dd 100644 (file)
--- a/src/os/bluestore/BlueStore.cc
+++ b/src/os/bluestore/BlueStore.cc
@@ -5741,6 +5741,11 @@ int BlueStore::_zero(TransContext *txc,
     ++bp;
   }
 
+  if (o->tail_bl.length() && offset + length > o->tail_offset) {
+    dout(20) << __func__ << " clearing cached tail" << dendl;
+    o->clear_tail();
+  }
+
   if (offset + length > o->onode.size) {
     o->onode.size = offset + length;
     dout(20) << __func__ << " extending size to " << offset + length