NFS_IOHDR_RESEND_PNFS
clear_bit(NFS_IOHDR_RESEND_PNFS, &hdr->flags);
set_bit(NFS_IOHDR_RESEND_PNFS, &hdr->flags);
if (test_bit(NFS_IOHDR_RESEND_PNFS, &hdr->flags))
clear_bit(NFS_IOHDR_RESEND_PNFS, &hdr->flags);
set_bit(NFS_IOHDR_RESEND_PNFS, &hdr->flags);
if (test_bit(NFS_IOHDR_RESEND_PNFS, &hdr->flags)) {