[PATCH 0/3] Support setting the array size from userspace

[Dan Williams <dan.j.williams@intel.com>]

This series, against the 'md/for-next' branch, adds a sysfs attribute
for pinning the array size.  As discussed earlier this is being
initiated to support the extra size rounding expected for Intel(R)
Matrix metadata arrays.  For example a 20GB 4-disk raid5 array created
in the orom will have the per-device size set to 13981448 sectors.  MD
calculates the array size as 41944320 sectors while the metadata records
the size as 41943040 sectors.

Tested against a raid5 grow from 4 to 5 disks, and a grow that attempts
to set the size smaller than the userspace pinned size.  The attribute
displays 'default' when the size is unpinned, to aid debug.

---

Dan Williams (3):
      md: 'array_size' sysfs attribute
      md: centralize ->array_sectors modifications
      md: add 'size' as a personality method


 drivers/md/faulty.c       |   14 ++++++
 drivers/md/linear.c       |   15 ++++++-
 drivers/md/md.c           |   97 +++++++++++++++++++++++++++++++++++++++++++++
 drivers/md/multipath.c    |   11 +++++
 drivers/md/raid0.c        |   22 ++++++++--
 drivers/md/raid1.c        |   19 +++++++--
 drivers/md/raid10.c       |   27 ++++++++++++-
 drivers/md/raid5.c        |   49 +++++++++++++++++------
 include/linux/raid/md.h   |    2 +
 include/linux/raid/md_k.h |    2 +
 10 files changed, 229 insertions(+), 29 deletions(-)