os/bluestore: fix warning

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

diff --git a/src/os/bluestore/BlueStore.h b/src/os/bluestore/BlueStore.h
index 252c404f4eae8b4e045bac89aa44bb19fb3563e0..a127198e3779cbec42078a9cbc3567b115c89ba8 100644 (file)
--- a/src/os/bluestore/BlueStore.h
+++ b/src/os/bluestore/BlueStore.h
@@ -636,7 +636,7 @@ public:
       }
       int s = seek_shard(offset);
       assert(s >= 0);
-      if (s == shards.size() - 1) {
+      if (s == (int)shards.size() - 1) {
        return false; // last shard
       }
       if (offset + length <= shards[s+1].offset) {