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| author | Artur Paszkiewicz <artur.paszkiewicz@intel.com> | 2017-03-09 09:59:57 +0100 |
|---|---|---|
| committer | Shaohua Li <shli@fb.com> | 2017-03-16 16:55:53 -0700 |
| commit | ea0213e0c7cc1c1b52badf27bd7db4f50a67baaa (patch) | |
| tree | cc45803ce7ac13964e38403e03f9ea06559fa5e0 /drivers/md/md.h | |
| parent | effe6ee7523aa50d0517bd7da141e112b44d89fa (diff) | |
| download | linux-ea0213e0c7cc1c1b52badf27bd7db4f50a67baaa.tar.bz2 | |
md: superblock changes for PPL
Include information about PPL location and size into mdp_superblock_1
and copy it to/from rdev. Because PPL is mutually exclusive with bitmap,
put it in place of 'bitmap_offset'. Add a new flag MD_FEATURE_PPL for
'feature_map', analogically to MD_FEATURE_BITMAP_OFFSET. Add MD_HAS_PPL
to mddev->flags to indicate that PPL is enabled on an array.
Signed-off-by: Artur Paszkiewicz <artur.paszkiewicz@intel.com>
Signed-off-by: Shaohua Li <shli@fb.com>
Diffstat (limited to 'drivers/md/md.h')
| -rw-r--r-- | drivers/md/md.h | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/drivers/md/md.h b/drivers/md/md.h index 1c00160b09f9..a7b2f16452c4 100644 --- a/drivers/md/md.h +++ b/drivers/md/md.h @@ -122,6 +122,13 @@ struct md_rdev { * sysfs entry */ struct badblocks badblocks; + + struct { + short offset; /* Offset from superblock to start of PPL. + * Not used by external metadata. */ + unsigned int size; /* Size in sectors of the PPL space */ + sector_t sector; /* First sector of the PPL space */ + } ppl; }; enum flag_bits { Faulty, /* device is known to have a fault */ @@ -226,6 +233,7 @@ enum mddev_flags { * supported as calls to md_error() will * never cause the array to become failed. */ + MD_HAS_PPL, /* The raid array has PPL feature set */ }; enum mddev_sb_flags { |