NFSD: restore EINVAL error translation in nfsd_commit()

commit 555dbf1a9aac ("nfsd: Replace use of rwsem with errseq_t")
incidentally broke translation of -EINVAL to nfserr_notsupp.
The patch restores that.

Found by Linux Verification Center (linuxtesting.org) with SVACE.

Signed-off-by: Alexey Khoroshilov <khoroshilov@ispras.ru>
Fixes: 555dbf1a9aac ("nfsd: Replace use of rwsem with errseq_t")
Signed-off-by: Chuck Lever <chuck.lever@oracle.com>

diff --git a/fs/nfsd/vfs.c b/fs/nfsd/vfs.c
index 840e3af..1b09d72 100644 (file)
--- a/fs/nfsd/vfs.c
+++ b/fs/nfsd/vfs.c
@@ -1173,6 +1173,7 @@ nfsd_commit(struct svc_rqst *rqstp, struct svc_fh *fhp, u64 offset,
                        nfsd_copy_write_verifier(verf, nn);
                        err2 = filemap_check_wb_err(nf->nf_file->f_mapping,
                                                    since);
+                       err = nfserrno(err2);
                        break;
                case -EINVAL:
                        err = nfserr_notsupp;
@@ -1180,8 +1181,8 @@ nfsd_commit(struct svc_rqst *rqstp, struct svc_fh *fhp, u64 offset,
                default:
                        nfsd_reset_write_verifier(nn);
                        trace_nfsd_writeverf_reset(nn, rqstp, err2);
+                       err = nfserrno(err2);
                }
-               err = nfserrno(err2);
        } else
                nfsd_copy_write_verifier(verf, nn);