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(-)
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