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-rw-r--r--fs/nfsd/Kconfig16
1 files changed, 16 insertions, 0 deletions
diff --git a/fs/nfsd/Kconfig b/fs/nfsd/Kconfig
index 43b88eaf0673..272ab8d5c4d7 100644
--- a/fs/nfsd/Kconfig
+++ b/fs/nfsd/Kconfig
@@ -158,3 +158,19 @@ config NFSD_V4_SECURITY_LABEL
If you do not wish to enable fine-grained security labels SELinux or
Smack policies on NFSv4 files, say N.
+
+config NFSD_LEGACY_CLIENT_TRACKING
+ bool "Support legacy NFSv4 client tracking methods (DEPRECATED)"
+ depends on NFSD_V4
+ default n
+ help
+ The NFSv4 server needs to store a small amount of information on
+ stable storage in order to handle state recovery after reboot. Most
+ modern deployments upcall to a userland daemon for this (nfsdcld),
+ but older NFS servers may store information directly in a
+ recoverydir, or spawn a process directly using a usermodehelper
+ upcall.
+
+ These legacy client tracking methods have proven to be probelmatic
+ and will be removed in the future. Say Y here if you need support
+ for them in the interim.