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SubjectRe: [PATCH] remove 2TB block device limit
On Friday May 10, wrote:
> Hi,
> At present, linux is limited to 2TB filesystems even on 64-bit
> systems, because there are various places where the block offset on
> disc are assigned to unsigned or int 32-bit variables.
> There's a type, sector_t, that's meant to hold offsets in sectors and
> blocks. It's not used consistently (yet).
> The patch at

> As this touches lots of places -- the generic block layer (Andrew?)
> the IDE code (Martin?) and RAID (Neil?) and minor changes to the scsi
> I've CCd a few people directly.

MD part looks sane to me. However I would rather the

+#ifdef CONFIG_LFS
+#include <asm/div64.h>
+#undef do_div
+#define do_div(n, b)({ int _res; _res = (n) % (b); (n) /= (b); _res;})

part went in linux/raid/md_k.h and defined "sector_div" (or similar)
as either do_div or ({ int _res; _res = (n) % (b); (n) /= (b); _res;})
as appropriate.

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