+int nfs4_set_rw_stateid(nfs4_stateid *stateid,
+ const struct nfs_open_context *ctx,
+ const struct nfs_lock_context *l_ctx,
+ fmode_t fmode)
+{
+ const struct nfs_lockowner *lockowner = NULL;
+
+ if (l_ctx != NULL)
+ lockowner = &l_ctx->lockowner;
+ return nfs4_select_rw_stateid(stateid, ctx->state, fmode, lockowner);
+}
+EXPORT_SYMBOL_GPL(nfs4_set_rw_stateid);
+
+static bool nfs4_stateid_is_current(nfs4_stateid *stateid,
+ const struct nfs_open_context *ctx,
+ const struct nfs_lock_context *l_ctx,
+ fmode_t fmode)
+{
+ nfs4_stateid current_stateid;
+
+ if (nfs4_set_rw_stateid(¤t_stateid, ctx, l_ctx, fmode))
+ return false;
+ return nfs4_stateid_match(stateid, ¤t_stateid);
+}
+
+static bool nfs4_error_stateid_expired(int err)
+{
+ switch (err) {
+ case -NFS4ERR_DELEG_REVOKED:
+ case -NFS4ERR_ADMIN_REVOKED:
+ case -NFS4ERR_BAD_STATEID:
+ case -NFS4ERR_STALE_STATEID:
+ case -NFS4ERR_OLD_STATEID:
+ case -NFS4ERR_OPENMODE:
+ case -NFS4ERR_EXPIRED:
+ return true;
+ }
+ return false;
+}
+