• Nate Diller's avatar
    [BLOCK] elevator: allow default scheduler to potentially be modular · 248d5ca5
    Nate Diller authored
    Jens has decided that allowing the default scheduler to be a module is
    a bug, and should not be allowed under kconfig.  However, I find that
    scenario useful for debugging, and wish for the kernel to be able to
    handle this situation without OOPSing, if I enable such an option in
    the .config directly.  This patch dynamically checks for the presence
    of the compiled-in default, and falls back to no-op, emitting a
    suitable error message, when the default is not available
    
    Tested for a range of boot options on 2.6.16-rc1-mm2.
    Signed-off-by: default avatarNate Diller <nate.diller@gmail.com>
    Signed-off-by: default avatarJens Axboe <axboe@suse.de>
    248d5ca5
elevator.c 18.4 KB