FF_FLAGS_NO_IO_THRU_MDS   14 fs/nfs/flexfilelayout/flexfilelayout.h #define FF_FLAGS_NO_IO_THRU_MDS  2
FF_FLAGS_NO_IO_THRU_MDS   12 fs/nfsd/flexfilelayoutxdr.h #define FF_FLAGS_NO_IO_THRU_MDS  2