• Chuck Lever's avatar
    NFSD: Clean up legacy NFS SYMLINK argument XDR decoders · 38a70315
    Chuck Lever authored
    Move common code in NFSD's legacy SYMLINK decoders into a helper.
    The immediate benefits include:
    
     - one fewer data copies on transports that support DDP
     - consistent error checking across all versions
     - reduction of code duplication
     - support for both legal forms of SYMLINK requests on RDMA
       transports for all versions of NFS (in particular, NFSv2, for
       completeness)
    
    In the long term, this helper is an appropriate spot to perform a
    per-transport call-out to fill the pathname argument using, say,
    RDMA Reads.
    
    Filling the pathname in the proc function also means that eventually
    the incoming filehandle can be interpreted so that filesystem-
    specific memory can be allocated as a sink for the pathname
    argument, rather than using anonymous pages.
    Signed-off-by: default avatarChuck Lever <chuck.lever@oracle.com>
    Signed-off-by: default avatarJ. Bruce Fields <bfields@redhat.com>
    38a70315