From: Trond Myklebust <trond.myklebust@hammerspace.com>
Date: Wed, 21 Aug 2019 22:16:28 +0000 (-0400)
Subject: NFS: If nfs_mountpoint_expiry_timeout < 0, do not expire submounts
X-Git-Tag: v5.10.7~3675^2~49
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=22a1ae9a93fb64600d0756e8f8051d65527f6786;p=platform%2Fkernel%2Flinux-rpi.git

NFS: If nfs_mountpoint_expiry_timeout < 0, do not expire submounts

If we set nfs_mountpoint_expiry_timeout to a negative value, then
allow that to imply that we do not expire NFSv4 submounts.

Signed-off-by: Trond Myklebust <trond.myklebust@hammerspace.com>
---

diff --git a/fs/nfs/namespace.c b/fs/nfs/namespace.c
index 9287eb6..5e0e9d2 100644
--- a/fs/nfs/namespace.c
+++ b/fs/nfs/namespace.c
@@ -157,6 +157,9 @@ struct vfsmount *nfs_d_automount(struct path *path)
 	if (IS_ERR(mnt))
 		goto out;
 
+	if (nfs_mountpoint_expiry_timeout < 0)
+		goto out;
+
 	mntget(mnt); /* prevent immediate expiration */
 	mnt_set_expiry(mnt, &nfs_automount_list);
 	schedule_delayed_work(&nfs_automount_task, nfs_mountpoint_expiry_timeout);