nfsd: fix nfsdfs inode reference count leak

BugLink: https://bugs.launchpad.net/bugs/1886995
[ Upstream commit bf2654017e0268cc83dc88d56f0e67ff4406631d ]

I don't understand this code well, but  I'm seeing a warning about a
still-referenced inode on unmount, and every other similar filesystem
does a dput() here.

Fixes: e8a79fb14f6b ("nfsd: add nfsd/clients directory")
Signed-off-by: J. Bruce Fields <bfields@redhat.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Signed-off-by: Kamal Mostafa <kamal@canonical.com>
Signed-off-by: Kelsey Skunberg <kelsey.skunberg@canonical.com>

diff --git a/fs/nfsd/nfsctl.c b/fs/nfsd/nfsctl.c
index 596ed6a42022dc1760318c985e565bee3543f2cc..be418fccc9d865e5744e5ad609cb55f767e6d8f4 100644 (file)
--- a/fs/nfsd/nfsctl.c
+++ b/fs/nfsd/nfsctl.c
@@ -1335,6 +1335,7 @@ void nfsd_client_rmdir(struct dentry *dentry)
        WARN_ON_ONCE(ret);
        fsnotify_rmdir(dir, dentry);
        d_delete(dentry);
+       dput(dentry);
        inode_unlock(dir);
 }