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| author | Goldwyn Rodrigues <rgoldwyn@suse.com> | 2015-08-19 00:35:54 +0300 |
|---|---|---|
| committer | Goldwyn Rodrigues <rgoldwyn@suse.com> | 2015-10-12 09:31:33 +0300 |
| commit | 3c462c880b52aae2cfbbb8db8b401eef118cc128 (patch) | |
| tree | 47df3599c19db234cccf92933ab396926ee4b49b /drivers/md/bitmap.h | |
| parent | 9ed38ff53090856769b99e9d2f19740fb11e6956 (diff) | |
| download | linux-3c462c880b52aae2cfbbb8db8b401eef118cc128.tar.xz | |
md: Increment version for clustered bitmaps
Add BITMAP_MAJOR_CLUSTERED as 5, in order to prevent older kernels
to assemble a clustered device.
In order to maximize compatibility, the major version is set to
BITMAP_MAJOR_CLUSTERED *only* if the bitmap is clustered.
Added MD_FEATURE_CLUSTERED in order to return error for older
kernels which would assemble MD even if the bitmap is corrupted.
Signed-off-by: Goldwyn Rodrigues <rgoldwyn@suse.com>
Signed-off-by: NeilBrown <neilb@suse.com>
Diffstat (limited to 'drivers/md/bitmap.h')
| -rw-r--r-- | drivers/md/bitmap.h | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/drivers/md/bitmap.h b/drivers/md/bitmap.h index f1f4dd01090d..8731fa06855f 100644 --- a/drivers/md/bitmap.h +++ b/drivers/md/bitmap.h @@ -9,8 +9,10 @@ #define BITMAP_MAJOR_LO 3 /* version 4 insists the bitmap is in little-endian order * with version 3, it is host-endian which is non-portable + * Version 5 is currently set only for clustered devices */ #define BITMAP_MAJOR_HI 4 +#define BITMAP_MAJOR_CLUSTERED 5 #define BITMAP_MAJOR_HOSTENDIAN 3 /* |