[PATCH 5.15 34/98] NFSD: restore EINVAL error translation in nfsd_commit()

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From: Alexey Khoroshilov <khoroshilov@xxxxxxxxx>

commit 8a9ffb8c857c2c99403bd6483a5a005fed5c0773 upstream.

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@xxxxxxxxx>
Fixes: 555dbf1a9aac ("nfsd: Replace use of rwsem with errseq_t")
Signed-off-by: Chuck Lever <chuck.lever@xxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
 fs/nfsd/vfs.c |    3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

--- a/fs/nfsd/vfs.c
+++ b/fs/nfsd/vfs.c
@@ -1142,6 +1142,7 @@ nfsd_commit(struct svc_rqst *rqstp, stru
 						nfsd_net_id));
 			err2 = filemap_check_wb_err(nf->nf_file->f_mapping,
 						    since);
+			err = nfserrno(err2);
 			break;
 		case -EINVAL:
 			err = nfserr_notsupp;
@@ -1149,8 +1150,8 @@ nfsd_commit(struct svc_rqst *rqstp, stru
 		default:
 			nfsd_reset_boot_verifier(net_generic(nf->nf_net,
 						 nfsd_net_id));
+			err = nfserrno(err2);
 		}
-		err = nfserrno(err2);
 	} else
 		nfsd_copy_boot_verifier(verf, net_generic(nf->nf_net,
 					nfsd_net_id));





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