[LTP] Patch "nfsd: move reply cache initialization into nfsd startup" has been added to the 6.1-stable tree

[gregkh@linuxfoundation.org]

This is a note to let you know that I've just added the patch titled

    nfsd: move reply cache initialization into nfsd startup

to the 6.1-stable tree which can be found at:
    http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary

The filename of the patch is:
     nfsd-move-reply-cache-initialization-into-nfsd-startup.patch
and it can be found in the queue-6.1 subdirectory.

If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@vger.kernel.org> know about it.


>From stable+bounces-66322-greg=kroah.com@vger.kernel.org Sat Aug 10 22:00:30 2024
From: cel@kernel.org
Date: Sat, 10 Aug 2024 15:59:52 -0400
Subject: nfsd: move reply cache initialization into nfsd startup
To: <stable@vger.kernel.org>
Cc: <linux-nfs@vger.kernel.org>, pvorel@suse.cz, sherry.yang@oracle.com, calum.mackay@oracle.com, kernel-team@fb.com, ltp@lists.linux.it, Jeff Layton <jlayton@kernel.org>, Dai Ngo <dai.ngo@oracle.com>
Message-ID: <20240810200009.9882-2-cel@kernel.org>

From: Jeff Layton <jlayton@kernel.org>

[ Upstream commit f5f9d4a314da88c0a5faa6d168bf69081b7a25ae ]

There's no need to start the reply cache before nfsd is up and running,
and doing so means that we register a shrinker for every net namespace
instead of just the ones where nfsd is running.

Move it to the per-net nfsd startup instead.

Reported-by: Dai Ngo <dai.ngo@oracle.com>
Signed-off-by: Jeff Layton <jlayton@kernel.org>
Stable-dep-of: ed9ab7346e90 ("nfsd: move init of percpu reply_cache_stats counters back to nfsd_init_net")
Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
 fs/nfsd/nfsctl.c |    8 --------
 fs/nfsd/nfssvc.c |   10 +++++++++-
 2 files changed, 9 insertions(+), 9 deletions(-)

--- a/fs/nfsd/nfsctl.c
+++ b/fs/nfsd/nfsctl.c
@@ -1453,16 +1453,11 @@ static __net_init int nfsd_init_net(stru
 	nn->nfsd_versions = NULL;
 	nn->nfsd4_minorversions = NULL;
 	nfsd4_init_leases_net(nn);
-	retval = nfsd_reply_cache_init(nn);
-	if (retval)
-		goto out_cache_error;
 	get_random_bytes(&nn->siphash_key, sizeof(nn->siphash_key));
 	seqlock_init(&nn->writeverf_lock);
 
 	return 0;
 
-out_cache_error:
-	nfsd_idmap_shutdown(net);
 out_idmap_error:
 	nfsd_export_shutdown(net);
 out_export_error:
@@ -1471,9 +1466,6 @@ out_export_error:
 
 static __net_exit void nfsd_exit_net(struct net *net)
 {
-	struct nfsd_net *nn = net_generic(net, nfsd_net_id);
-
-	nfsd_reply_cache_shutdown(nn);
 	nfsd_idmap_shutdown(net);
 	nfsd_export_shutdown(net);
 	nfsd_netns_free_versions(net_generic(net, nfsd_net_id));
--- a/fs/nfsd/nfssvc.c
+++ b/fs/nfsd/nfssvc.c
@@ -427,16 +427,23 @@ static int nfsd_startup_net(struct net *
 	ret = nfsd_file_cache_start_net(net);
 	if (ret)
 		goto out_lockd;
-	ret = nfs4_state_start_net(net);
+
+	ret = nfsd_reply_cache_init(nn);
 	if (ret)
 		goto out_filecache;
 
+	ret = nfs4_state_start_net(net);
+	if (ret)
+		goto out_reply_cache;
+
 #ifdef CONFIG_NFSD_V4_2_INTER_SSC
 	nfsd4_ssc_init_umount_work(nn);
 #endif
 	nn->nfsd_net_up = true;
 	return 0;
 
+out_reply_cache:
+	nfsd_reply_cache_shutdown(nn);
 out_filecache:
 	nfsd_file_cache_shutdown_net(net);
 out_lockd:
@@ -454,6 +461,7 @@ static void nfsd_shutdown_net(struct net
 	struct nfsd_net *nn = net_generic(net, nfsd_net_id);
 
 	nfs4_state_shutdown_net(net);
+	nfsd_reply_cache_shutdown(nn);
 	nfsd_file_cache_shutdown_net(net);
 	if (nn->lockd_up) {
 		lockd_down(net);


Patches currently in stable-queue which might be from kroah.com@vger.kernel.org are

queue-6.1/nfsd-remove-nfsd_stats-make-th_cnt-a-global-counter.patch
queue-6.1/nfsd-move-reply-cache-initialization-into-nfsd-startup.patch
queue-6.1/sunrpc-remove-pg_stats-from-svc_program.patch
queue-6.1/mptcp-pm-don-t-try-to-create-sf-if-alloc-failed.patch
queue-6.1/nfsd-rename-nfsd_reply_cache_alloc.patch
queue-6.1/nfsd-make-all-of-the-nfsd-stats-per-network-namespace.patch
queue-6.1/mptcp-pass-addr-to-mptcp_pm_alloc_anno_list.patch
queue-6.1/nfsd-move-init-of-percpu-reply_cache_stats-counters-back-to-nfsd_init_net.patch
queue-6.1/nfsd-replace-nfsd_prune_bucket.patch
queue-6.1/nfsd-stop-setting-pg_stats-for-unused-stats.patch
queue-6.1/sunrpc-don-t-change-sv_stats-if-it-doesn-t-exist.patch
queue-6.1/nfsd-make-svc_stat-per-network-namespace-instead-of-global.patch
queue-6.1/nfsd-fix-frame-size-warning-in-svc_export_parse.patch
queue-6.1/nfsd-rename-nfsd_net_-to-nfsd_stats_.patch
queue-6.1/mptcp-pm-do-not-ignore-subflow-if-signal-flag-is-also-set.patch
queue-6.1/nfsd-refactor-nfsd_reply_cache_free_locked.patch
queue-6.1/mptcp-fully-established-after-add_addr-echo-on-mpj.patch
queue-6.1/sunrpc-use-the-struct-net-as-the-svc-proc-private.patch
queue-6.1/selftests-mptcp-join-test-both-signal-subflow.patch
queue-6.1/sunrpc-pass-in-the-sv_stats-struct-through-svc_create_pooled.patch
queue-6.1/mptcp-pm-reduce-indentation-blocks.patch
queue-6.1/nfsd-rewrite-synopsis-of-nfsd_percpu_counters_init.patch
queue-6.1/nfsd-expose-proc-net-sunrpc-nfsd-in-net-namespaces.patch
queue-6.1/nfsd-refactor-the-duplicate-reply-cache-shrinker.patch