md/4.4-rc5-fixes

4 fixes for md in 4.4-rc5

- 2 recently introduced regressions fixed.
- one older bug in RAID10 - tagged for -stable since 4.2
- one minor sysfs api improvement.
-----BEGIN PGP SIGNATURE-----
Version: GnuPG v2
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=nHNn
-----END PGP SIGNATURE-----