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| author |   NeilBrown <neilb@suse.de> | 2009-03-31 14:33:13 +1100 |
|---|---|---|
| committer | NeilBrown <neilb@suse.de> | 2009-03-31 14:33:13 +1100 |
| commit | 92022950c6b1bb3da90b2976b20271cdfd98b8a3 (patch) | |
| tree | 5405257242ddcadef6e90ea597289558de4e03f2 /include/linux/raid/md_u.h | |
| parent | md: move LEVEL_* definition from md_k.h to md_u.h (diff) | |
| download | linux-dev-92022950c6b1bb3da90b2976b20271cdfd98b8a3.tar.xz linux-dev-92022950c6b1bb3da90b2976b20271cdfd98b8a3.zip | |
md: move most content from md.h to md_k.h
The extern function definitions are kernel-internal definitions, so
they belong in md_k.h
The MD_*_VERSION values could reasonably go in a number of places,
but md_u.h seems most reasonable.
This leaves almost nothing in md.h. It will go soon.
Signed-off-by: NeilBrown <neilb@suse.de>
Diffstat (limited to '')
| -rw-r--r-- | include/linux/raid/md_u.h | 18 |
1 files changed, 18 insertions, 0 deletions
diff --git a/include/linux/raid/md_u.h b/include/linux/raid/md_u.h index 2f824aa889f3..fb1abb3367e9 100644 --- a/include/linux/raid/md_u.h +++ b/include/linux/raid/md_u.h @@ -15,6 +15,24 @@ #ifndef _MD_U_H #define _MD_U_H +/* + * Different major versions are not compatible. + * Different minor versions are only downward compatible. + * Different patchlevel versions are downward and upward compatible. + */ +#define MD_MAJOR_VERSION 0 +#define MD_MINOR_VERSION 90 +/* + * MD_PATCHLEVEL_VERSION indicates kernel functionality. + * >=1 means different superblock formats are selectable using SET_ARRAY_INFO + * and major_version/minor_version accordingly + * >=2 means that Internal bitmaps are supported by setting MD_SB_BITMAP_PRESENT + * in the super status byte + * >=3 means that bitmap superblock version 4 is supported, which uses + * little-ending representation rather than host-endian + */ +#define MD_PATCHLEVEL_VERSION 3 + /* ioctls */ /* status */ |