linux/fs/partitions
Martin K. Petersen c72758f337 block: Export I/O topology for block devices and partitions
To support devices with physical block sizes bigger than 512 bytes we
need to ensure proper alignment.  This patch adds support for exposing
I/O topology characteristics as devices are stacked.

  logical_block_size is the smallest unit the device can address.

  physical_block_size indicates the smallest I/O the device can write
  without incurring a read-modify-write penalty.

  The io_min parameter is the smallest preferred I/O size reported by
  the device.  In many cases this is the same as the physical block
  size.  However, the io_min parameter can be scaled up when stacking
  (RAID5 chunk size > physical block size).

  The io_opt characteristic indicates the optimal I/O size reported by
  the device.  This is usually the stripe width for arrays.

  The alignment_offset parameter indicates the number of bytes the start
  of the device/partition is offset from the device's natural alignment.
  Partition tools and MD/DM utilities can use this to pad their offsets
  so filesystems start on proper boundaries.

Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
2009-05-22 23:22:55 +02:00
..
acorn.c fs/partitions/acorn.c: remove dead code 2008-10-16 11:21:47 -07:00
acorn.h
amiga.c [PATCH] Fix check_partition routines 2006-12-07 08:39:30 -08:00
amiga.h
atari.c [PATCH] Fix check_partition routines 2006-12-07 08:39:30 -08:00
atari.h
check.c block: Export I/O topology for block devices and partitions 2009-05-22 23:22:55 +02:00
check.h block: replace @ext_minors with GENHD_FL_EXT_DEVT 2008-10-09 08:56:08 +02:00
efi.c fs/partitions/efi: convert to pr_debug 2008-07-25 10:53:44 -07:00
efi.h Remove obsolete #include <linux/config.h> 2006-06-30 19:25:36 +02:00
ibm.c block: Do away with the notion of hardsect_size 2009-05-22 23:22:54 +02:00
ibm.h
karma.c [PATCH] partitions: Read Rio Karma partition table 2006-01-16 23:15:29 -08:00
karma.h [PATCH] partitions: Read Rio Karma partition table 2006-01-16 23:15:29 -08:00
Kconfig partition: use DEFAULT_SGI_PARTITION for SGI_PARTION default 2008-02-06 10:41:08 -08:00
ldm.c fs: ldm.[ch] use get_unaligned_* helpers 2008-07-25 10:53:26 -07:00
ldm.h fs: ldm.[ch] use get_unaligned_* helpers 2008-07-25 10:53:26 -07:00
mac.c [PATCH] Enable RAID autorun on Mac partition tables. 2006-12-04 08:36:37 -08:00
mac.h
Makefile partition: add support for sysv68 partitions 2007-05-08 11:15:09 -07:00
msdos.c block: Do away with the notion of hardsect_size 2009-05-22 23:22:54 +02:00
msdos.h
osf.c
osf.h
sgi.c [PARTITION]: Add whole_disk attribute. 2007-02-10 23:50:00 -08:00
sgi.h
sun.c fs/partitions/sun.c endianness annotations 2007-10-14 12:41:51 -07:00
sun.h [PARTITION]: Sun/Solaris VTOC table corrections 2007-07-30 00:27:31 -07:00
sysv68.c partition: add support for sysv68 partitions 2007-05-08 11:15:09 -07:00
sysv68.h partition: add support for sysv68 partitions 2007-05-08 11:15:09 -07:00
ultrix.c fs/partitions/ultrix.c should #include "ultrix.h" 2005-11-08 16:49:14 +01:00
ultrix.h