From: Xiubo Li <xiubli@redhat.com>
Date: Wed, 23 Dec 2020 08:01:39 +0000 (+0800)
Subject: client: skip putting inodes if map is empty
X-Git-Tag: v16.1.0~101^2~2
X-Git-Url: http://git-server-git.apps.pok.os.sepia.ceph.com/?a=commitdiff_plain;h=476267c7589dbace63d2b793d5ed1d3f81eb4af6;p=ceph.git

client: skip putting inodes if map is empty

The delay_put_inodes() will be called by the tick() periodically
per second, and when the _unmount() is waiting for the inode_map
to be cleared, if the delay_i_release is empty the _unmount() will
be woke up too frequent that the dump_cache() won't get any chance
to be called.

Fixes: https://tracker.ceph.com/issues/48707
Signed-off-by: Xiubo Li <xiubli@redhat.com>
---

diff --git a/src/client/Client.cc b/src/client/Client.cc
index 3d3c3db0b7ae..0077d391a7f6 100644
--- a/src/client/Client.cc
+++ b/src/client/Client.cc
@@ -3155,6 +3155,9 @@ void Client::delay_put_inodes(bool wakeup)
     release.swap(delay_i_release);
   }
 
+  if (release.empty())
+    return;
+
   for (auto &[in, cnt] : release)
     _put_inode(in, cnt);