MD: add a new disk role to present write journal device

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Next patches will use a disk as raid5/6 journaling. We need a new disk
role to present the journal device and add MD_FEATURE_JOURNAL to
feature_map for backward compability.

Signed-off-by: Song Liu <songliubraving@fb.com>
Signed-off-by: Shaohua Li <shli@fb.com>
Signed-off-by: NeilBrown <neilb@suse.com>

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Song Liu 2015-08-13 14:31:55 -07:00 • committed by NeilBrown

parent c4d4c91b44

commit bac624f3f8

3 changed files with 29 additions and 2 deletions

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23

drivers/md/md.c

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5

drivers/md/md.h

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3

include/uapi/linux/raid/md_p.h

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