os/bluestore: fix signed/unsigned comparison warnings

Signed-off-by: Kefu Chai <kchai@redhat.com>

diff --git a/src/os/bluestore/BlueFS.cc b/src/os/bluestore/BlueFS.cc
index d32d7d6f83f4575c0631a7733a3907a85b11205a..458204b5d3f5f31dbb287b0ba16c69d80e4a67cd 100644 (file)
--- a/src/os/bluestore/BlueFS.cc
+++ b/src/os/bluestore/BlueFS.cc
@@ -706,7 +706,7 @@ int BlueFS::_read(
 
   int ret = 0;
   while (len > 0) {
-    int left;
+    size_t left;
     if (off < buf->bl_off || off >= buf->get_buf_end()) {
       buf->bl.clear();
       buf->bl_off = off & super.block_mask();