[PATCH] NFSD: hide unused svcxdr_dupstr()

[Arnd Bergmann <arnd@arndb.de>]

There is now only one caller left for svcxdr_dupstr() and this is inside
of an #ifdef, so we can get a warning when the option is disabled:

fs/nfsd/nfs4xdr.c:241:1: error: 'svcxdr_dupstr' defined but not used [-Werror=unused-function]

This adds another #ifdef around the definition.

Fixes: e40d99e6183e ("NFSD: Clean up symlink argument XDR decoders")
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
---
 fs/nfsd/nfs4xdr.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/fs/nfsd/nfs4xdr.c b/fs/nfsd/nfs4xdr.c
index f51c9cccaf78..374a62af6034 100644
--- a/fs/nfsd/nfs4xdr.c
+++ b/fs/nfsd/nfs4xdr.c
@@ -237,6 +237,7 @@ svcxdr_tmpalloc(struct nfsd4_compoundargs *argp, u32 len)
  * Note null-terminating in place usually isn't safe since the
  * buffer might end on a page boundary.
  */
+#ifdef CONFIG_NFSD_V4_SECURITY_LABEL
 static char *
 svcxdr_dupstr(struct nfsd4_compoundargs *argp, void *buf, u32 len)
 {
@@ -248,6 +249,7 @@ svcxdr_dupstr(struct nfsd4_compoundargs *argp, void *buf, u32 len)
 	p[len] = '\0';
 	return p;
 }
+#endif
 
 /**
  * savemem - duplicate a chunk of memory for later processing
-- 
2.9.0