os/bluestore/KernelDevice: reuse r

Signed-off-by: xie xingguo <xie.xingguo@zte.com.cn>

diff --git a/src/os/bluestore/KernelDevice.cc b/src/os/bluestore/KernelDevice.cc
index e96a1906fc588e8623c8e53c62a8fdb8d6577415..9c2de912c896a9098715ac88b395eca2dbdbe30d 100644 (file)
--- a/src/os/bluestore/KernelDevice.cc
+++ b/src/os/bluestore/KernelDevice.cc
@@ -68,7 +68,7 @@ int KernelDevice::open(string p)
 
   fd_direct = ::open(path.c_str(), O_RDWR | O_DIRECT);
   if (fd_direct < 0) {
-    int r = -errno;
+    r = -errno;
     derr << __func__ << " open got: " << cpp_strerror(r) << dendl;
     return r;
   }