From: Adam Kupczyk <akupczyk@ibm.com>
Date: Thu, 16 Feb 2023 12:40:25 +0000 (+0000)
Subject: os/bluestore: Improve ExtentMap::fault_range
X-Git-Tag: v19.0.0~486^2~36
X-Git-Url: http://git-server-git.apps.pok.os.sepia.ceph.com/?a=commitdiff_plain;h=85fb1db18456ea2578ba7d04a57e4424b839646b;p=ceph.git

os/bluestore: Improve ExtentMap::fault_range

Make faster exit when sharding not enabled.

Signed-off-by: Adam Kupczyk <akupczyk@ibm.com>
---

diff --git a/src/os/bluestore/BlueStore.cc b/src/os/bluestore/BlueStore.cc
index 6eb2f7c50476..43f6e0f345f3 100644
--- a/src/os/bluestore/BlueStore.cc
+++ b/src/os/bluestore/BlueStore.cc
@@ -3342,13 +3342,15 @@ void BlueStore::ExtentMap::fault_range(
 {
   dout(30) << __func__ << " 0x" << std::hex << offset << "~" << length
 	   << std::dec << dendl;
+  if (shards.size() == 0) {
+    // no sharding yet; everyting is loaded
+    return;
+  }
   auto start = seek_shard(offset);
   auto last = seek_shard(offset + length);
-
-  if (start < 0)
-    return;
-
   ceph_assert(last >= start);
+  ceph_assert(start >= 0);
+
   string key;
   while (start <= last) {
     ceph_assert((size_t)start < shards.size());