nfsd4: cleanup and consolidate seqid_mutating_err

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

1 files changed, 16 insertions, 0 deletions

diff --git a/include/linux/nfs4.h b/include/linux/nfs4.h
index 76f99e8714f3..b875b0324fc0 100644
--- a/include/linux/nfs4.h
+++ b/include/linux/nfs4.h
@@ -373,6 +373,22 @@ enum nfsstat4 {
         NFS4ERR_DELEG_REVOKED   = 10087,        /* deleg./layout revoked */
 };
 
+static inline bool seqid_mutating_err(u32 err)
+{
+        /* rfc 3530 section 8.1.5: */
+        switch (err) {
+        case NFS4ERR_STALE_CLIENTID:
+        case NFS4ERR_STALE_STATEID:
+        case NFS4ERR_BAD_STATEID:
+        case NFS4ERR_BAD_SEQID:
+        case NFS4ERR_BADXDR:
+        case NFS4ERR_RESOURCE:
+        case NFS4ERR_NOFILEHANDLE:
+                return false;
+        };
+        return true;
+}
+
 /*
  * Note: NF4BAD is not actually part of the protocol; it is just used
  * internally by nfsd.