nfsd4: cleanup check_forechannel_attrs

Pass this struct by reference, not by value, and return an error instead
of a boolean to allow for future additions.

Signed-off-by: J. Bruce Fields <bfields@redhat.com>

diff --git a/fs/nfsd/nfs4state.c b/fs/nfsd/nfs4state.c
index 7d2e3b54b9dfc510014fd25aa960f92159551a00..f1262f73f08b99712a6a0dd5216f5facaf048d98 100644 (file)
--- a/fs/nfsd/nfs4state.c
+++ b/fs/nfsd/nfs4state.c
@@ -1803,10 +1803,13 @@ nfsd4_replay_create_session(struct nfsd4_create_session *cr_ses,
                                /* seqid, slotID, slotID, slotID, status */ \
                        5 ) * sizeof(__be32))
 
-static bool check_forechannel_attrs(struct nfsd4_channel_attrs fchannel)
+static __be32 check_forechannel_attrs(struct nfsd4_channel_attrs *ca)
 {
-       return fchannel.maxreq_sz < NFSD_MIN_REQ_HDR_SEQ_SZ
-               || fchannel.maxresp_sz < NFSD_MIN_RESP_HDR_SEQ_SZ;
+       if (ca->maxreq_sz < NFSD_MIN_REQ_HDR_SEQ_SZ)
+               return nfserr_toosmall;
+       if (ca->maxresp_sz < NFSD_MIN_RESP_HDR_SEQ_SZ)
+               return nfserr_toosmall;
+       return nfs_ok;
 }
 
 __be32
@@ -1824,8 +1827,9 @@ nfsd4_create_session(struct svc_rqst *rqstp,
 
        if (cr_ses->flags & ~SESSION4_FLAG_MASK_A)
                return nfserr_inval;
-       if (check_forechannel_attrs(cr_ses->fore_channel))
-               return nfserr_toosmall;
+       status = check_forechannel_attrs(&cr_ses->fore_channel);
+       if (status)
+               return status;
        new = alloc_session(&cr_ses->fore_channel, nn);
        if (!new)
                return nfserr_jukebox;