From: Sage Weil <sage@redhat.com>
Date: Tue, 27 Sep 2016 18:02:36 +0000 (-0400)
Subject: os/bluestore: add assert to compress_extent_map
X-Git-Tag: v11.0.1~73^2
X-Git-Url: http://git-server-git.apps.pok.os.sepia.ceph.com/?a=commitdiff_plain;h=refs%2Fpull%2F11240%2Fhead;p=ceph.git

os/bluestore: add assert to compress_extent_map

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

diff --git a/src/os/bluestore/BlueStore.cc b/src/os/bluestore/BlueStore.cc
index 923bda285c26..f59159d2c73d 100644
--- a/src/os/bluestore/BlueStore.cc
+++ b/src/os/bluestore/BlueStore.cc
@@ -1888,6 +1888,8 @@ int BlueStore::ExtentMap::compress_extent_map(uint64_t offset, uint64_t length)
   if (p != extent_map.begin()) {
     --p;  // start to the left of offset
   }
+  // the caller should have just written to this region
+  assert(p != extent_map.end());
 
   // identify the *next* shard
   auto pshard = shards.begin();