NFSD: Remove nfsd_file::nf_hashval

The value in this field can always be computed from nf_inode, thus
it is no longer used.
Reviewed-by: Jeff Layton <jlayton@kernel.org>
Signed-off-by: Chuck Lever <chuck.lever@oracle.com>

fs/nfsd/filecache.c

@@ -168,8 +168,7 @@ nfsd_file_mark_find_or_create(struct nfsd_file *nf)
 }
 
 static struct nfsd_file *
-nfsd_file_alloc(struct inode *inode, unsigned int may, unsigned int hashval,
-		struct net *net)
+nfsd_file_alloc(struct inode *inode, unsigned int may, struct net *net)
 {
 	struct nfsd_file *nf;
 
@@ -183,7 +182,6 @@ nfsd_file_alloc(struct inode *inode, unsigned int may, unsigned int hashval,
 		nf->nf_net = net;
 		nf->nf_flags = 0;
 		nf->nf_inode = inode;
-		nf->nf_hashval = hashval;
 		refcount_set(&nf->nf_ref, 1);
 		nf->nf_may = may & NFSD_FILE_MAY_MASK;
 		nf->nf_mark = NULL;
@@ -1006,7 +1004,7 @@ nfsd_do_file_acquire(struct svc_rqst *rqstp, struct svc_fh *fhp,
 	if (nf)
 		goto wait_for_construction;
 
-	new = nfsd_file_alloc(inode, may_flags, hashval, net);
+	new = nfsd_file_alloc(inode, may_flags, net);
 	if (!new) {
 		status = nfserr_jukebox;
 		goto out_status;

fs/nfsd/filecache.h

@@ -40,7 +40,6 @@ struct nfsd_file {
 #define NFSD_FILE_REFERENCED	(2)
 	unsigned long		nf_flags;
 	struct inode		*nf_inode;
-	unsigned int		nf_hashval;
 	refcount_t		nf_ref;
 	unsigned char		nf_may;
 	struct nfsd_file_mark	*nf_mark;