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    SubjectRe: block devices
    On Fri, 2 Jan 1998, Albert D. Cahalan wrote:

    > There is a misfeature in drivers/block/ll_rw_blk.c, reported at line 539.
    > It shows up on CD-ROMs mostly, though the FAT code has some very ugly
    > hacks to "fix" related problems and I think the aliasing troubles
    > are related too.
    >
    > The following error is from mounting a SunOS CD-ROM with UFS:
    > ll_rw_block: device 16:00: only 2048-char blocks implemented (1024)
    >
    > With the whole filesystem copied (using dd) to a Zip disk:
    > ll_rw_block: device 08:04: only 512-char blocks implemented (1024)
    >
    > It works from a ramdisk though, so UFS is working. Something is very
    > broken if filesystems need to worry about the physical sector size
    > and alignment.

    The above refers to the logical filesystem blocksize -- we need to add
    something like "set_blocksize(dev, logical_blocksize)" before the first
    use of ll_rw_block()/bread()/etc.

    Gadi

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