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 changes the remaining caller to use a nicer IS_ENABLED() check,
which lets the compiler drop the unused code silently.

Fixes: e40d99e6183e ("NFSD: Clean up symlink argument XDR decoders")
Suggested-by: Rasmus Villemoes <rasmus.villem...@prevas.dk>
Signed-off-by: Arnd Bergmann <a...@arndb.de>
---
v2: use IS_ENABLED() instead of an #ifdef
---
 fs/nfsd/nfs4xdr.c | 5 ++---
 1 file changed, 2 insertions(+), 3 deletions(-)

diff --git a/fs/nfsd/nfs4xdr.c b/fs/nfsd/nfs4xdr.c
index f51c9cccaf78..86a1a2450376 100644
--- a/fs/nfsd/nfs4xdr.c
+++ b/fs/nfsd/nfs4xdr.c
@@ -455,8 +455,8 @@ nfsd4_decode_fattr(struct nfsd4_compoundargs *argp, u32 
*bmval,
        }
 
        label->len = 0;
-#ifdef CONFIG_NFSD_V4_SECURITY_LABEL
-       if (bmval[2] & FATTR4_WORD2_SECURITY_LABEL) {
+       if (IS_ENABLED(CONFIG_NFSD_V4_SECURITY_LABEL) &&
+           bmval[2] & FATTR4_WORD2_SECURITY_LABEL) {
                READ_BUF(4);
                len += 4;
                dummy32 = be32_to_cpup(p++); /* lfs: we don't use it */
@@ -476,7 +476,6 @@ nfsd4_decode_fattr(struct nfsd4_compoundargs *argp, u32 
*bmval,
                if (!label->data)
                        return nfserr_jukebox;
        }
-#endif
        if (bmval[2] & FATTR4_WORD2_MODE_UMASK) {
                if (!umask)
                        goto xdr_error;
-- 
2.9.0

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