There's a new patch for supporting block devices bigger than 2TB
now available at http://www.gelato.unsw.edu.au/patches/2.5.28-lbd-patch
and bk://gelato.unsw.edu.au:2023/
Changes are:
ChangeSet@1.441, 2002-07-25 14:52:39+10:00, peterc@wombat.chubb.wattle.id.au
Merge to 2.5.28: Viro's partitioning
changes conflicted with mine. His make mine easier! Main change here
is to allow a partition to be more than 2^32 sectors.
ChangeSet@1.403.168.1, 2002-07-25 13:24:58+10:00,peterc@wombat.chubb.wattle.id. au
Allow block devices larger than 2TB.
On 64-bit platforms, there's almost no penalty for the change, so
leave it permanently enabled. For 32-bit platforms, add a
configuration option.
The changes are:
-- sizes[] arrays are now sector_t not int.
-- partition functions deal in sector_t for start and size of
partitions.
-- Because sector_t could be 64-bit, change printk formats to %llu
and cast to (unsigned long long) where they're printed out.
These are entirely within slow paths anyway, so there's no
significant overhead to the 64-bit arithmetic.
-- Fix the Loop device to allow large backing devices/files.
Where there's no possibility of a problem, the sector_t is cast back
to int or unsigned (e.g., for creating BIOS geometry), to avoid
having to do 64-bit division.
There are a few places (mostly in the RAID subsystem) where a
division is necessary; use a macro for those based on asm/div64.h
The file system interface changes slightly: bread() and bmap() are
both in terms of sector_t not long. This is primaily so that when
the pagecache limit is removed, these functions will not have to be
changed again.
A configuration option, CONFIG_LBD, was added for x86 and
PPC(32-bit) to allow the sector_t to become 64-bits on those
platforms.
Diffstat is:
drivers/block/Config.help | 4 ++
drivers/block/Config.in | 3 +
drivers/block/blkpg.c | 29 +++++++++-------
drivers/block/cciss.c | 10 ++---
drivers/block/cciss.h | 4 +-
drivers/block/cpqarray.c | 4 +-
drivers/block/floppy.c | 10 +++--
drivers/block/genhd.c | 4 +-
drivers/block/ll_rw_blk.c | 14 ++++----
drivers/block/loop.c | 74 +++++++++++++++++++++++++++---------------\ drivers/block/nbd.c | 2 -
drivers/block/paride/pd.c | 2 -
drivers/block/ps2esdi.c | 4 +-
drivers/block/rd.c | 2 -
drivers/block/umem.c | 2 -
drivers/block/xd.c | 2 -
drivers/ide/ataraid.c | 2 -
drivers/ide/hd.c | 8 ++--
drivers/ide/ide-cd.c | 25 +++++++++-----
drivers/ide/ide-disk.c | 23 ++++++-------
drivers/ide/ide-floppy.c | 10 ++---
drivers/ide/ide-tape.c | 2 -
drivers/ide/ide.c | 2 -
drivers/ide/probe.c | 2 -
drivers/ieee1394/sbp2.c | 5 +-
drivers/md/linear.c | 10 +++--
drivers/md/lvm.c | 2 -
drivers/md/md.c | 69 ++++++++++++++++++++++------------------
drivers/md/multipath.c | 12 +++---
drivers/md/raid0.c | 21 +++++++-----
drivers/md/raid1.c | 16 ++++-----
drivers/md/raid5.c | 8 ++--
drivers/mtd/devices/blkmtd.c | 9 ++---
drivers/mtd/ftl.c | 2 -
drivers/mtd/mtdblock.c | 2 -
drivers/mtd/nftlcore.c | 6 +--
drivers/scsi/scsi.c | 10 ++---
drivers/scsi/sd.c | 42 ++++++++++++++----------
drivers/scsi/sd.h | 2 -
drivers/scsi/sr.c | 10 ++---
fs/adfs/inode.c | 2 -
fs/affs/file.c | 13 ++++---
fs/affs/inode.c | 2 -
fs/bfs/file.c | 2 -
fs/block_dev.c | 4 +-
fs/buffer.c | 8 ++--
fs/efs/inode.c | 2 -
fs/ext2/inode.c | 2 -
fs/ext3/ialloc.c | 7 ++--
fs/ext3/inode.c | 2 -
fs/fat/file.c | 2 -
fs/fat/inode.c | 2 -
fs/freevxfs/vxfs_subr.c | 6 +--
fs/hfs/inode.c | 2 -
fs/inode.c | 4 +-
fs/isofs/inode.c | 10 ++---
fs/jbd/commit.c | 4 +-
fs/jbd/revoke.c | 2 -
fs/jfs/inode.c | 2 -
fs/jfs/jfs_metapage.c | 2 -
fs/minix/inode.c | 2 -
fs/partitions/acorn.c | 23 ++++++-------
fs/partitions/check.c | 6 +--
fs/partitions/check.h | 7 +---
fs/partitions/efi.c | 1
fs/partitions/ldm.c | 2 -
fs/partitions/sun.c | 2 -
fs/qnx4/inode.c | 2 -
fs/reiserfs/inode.c | 2 -
fs/reiserfs/journal.c | 12 +++---
fs/reiserfs/prints.c | 40 +++++++++++------------
fs/reiserfs/super.c | 6 +--
fs/sysv/itree.c | 2 -
fs/udf/inode.c | 2 -
fs/ufs/inode.c | 2 -
include/asm-i386/types.h | 5 ++
include/asm-ppc/types.h | 5 ++
include/linux/blkdev.h | 24 +++++++++++--
include/linux/fs.h | 4 +-
include/linux/genhd.h | 8 ++--
include/linux/iso_fs.h | 2 -
include/linux/loop.h | 4 +-
include/linux/raid/md.h | 2 -
include/linux/loop.h | 4 +-
include/linux/raid/md.h | 2 -
include/linux/raid/md_k.h | 6 +--
include/linux/types.h | 10 ++---
86 files changed, 413 insertions(+), 320 deletions(-)
-
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