• Dominik Brodowski's avatar
    init: use do_mount() instead of ksys_mount() · cccaa5e3
    Dominik Brodowski authored
    
    
    In prepare_namespace(), do_mount() can be used instead of ksys_mount()
    as the first and third argument are const strings in the kernel, the
    second and fourth argument are passed through anyway, and the fifth
    argument is NULL.
    
    In do_mount_root(), ksys_mount() is called with the first and third
    argument being already kernelspace strings, which do not need to be
    copied over from userspace to kernelspace (again). The second and
    fourth arguments are passed through to do_mount() anyway. The fifth
    argument, while already residing in kernelspace, needs to be put into
    a page of its own. Then, do_mount() can be used instead of
    ksys_mount().
    
    Once this is done, there are no in-kernel users to ksys_mount() left,
    which can therefore be removed.
    Signed-off-by: default avatarDominik Brodowski <linux@dominikbrodowski.net>
    cccaa5e3
do_mounts.c 16 KB