Re: [patch for playing] Patch to support 4000 disks and maintain backward compatibility

    From: Roman Zippel <[e-mail]>

    > The conclusion is that the easy way out is to define MAX_NR_DISKS.
    > A different way out, especially when we use 32+32, is to kill this
    > sd_index_bits[] array, and give each disk a new number: replace
    >     index = find_first_zero_bit(sd_index_bits, SD_DISKS);
    > by
    >     index = next_index++;

    Unless you fix all programs which scan /dev/sg*, you better keep 
    the used range dense, so this not really option.

That only holds for the first 256 minors (of the first 8 majors).
Since we want to be completely backwards compatible, nothing
changes there.

But people who want to use new features must update their programs
or at least recompile.

Andries