NFS: Add timeout to submounts
Make automounted partitions expire using the mark_mounts_for_expiry()
function. The timeout is controlled via a sysctl.
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
diff --git a/fs/nfs/sysctl.c b/fs/nfs/sysctl.c
index 4c486eb..db61e51 100644
--- a/fs/nfs/sysctl.c
+++ b/fs/nfs/sysctl.c
@@ -12,6 +12,7 @@
#include <linux/module.h>
#include <linux/nfs4.h>
#include <linux/nfs_idmap.h>
+#include <linux/nfs_fs.h>
#include "callback.h"
@@ -46,6 +47,15 @@
.strategy = &sysctl_jiffies,
},
#endif
+ {
+ .ctl_name = CTL_UNNUMBERED,
+ .procname = "nfs_mountpoint_timeout",
+ .data = &nfs_mountpoint_expiry_timeout,
+ .maxlen = sizeof(nfs_mountpoint_expiry_timeout),
+ .mode = 0644,
+ .proc_handler = &proc_dointvec_jiffies,
+ .strategy = &sysctl_jiffies,
+ },
{ .ctl_name = 0 }
};