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md: Fix stray --cluster-confirm crash

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A --cluster-confirm without an --add (by another node) can
crash the kernel.

Fix it by guarding it using a state.

Signed-off-by: Goldwyn Rodrigues <rgoldwyn@suse.com>
Signed-off-by: NeilBrown <neilb@suse.de>
This commit is contained in:
Goldwyn Rodrigues
2015-03-02 10:55:49 -06:00
committed by NeilBrown
parent 3b0e6aacbf
commit fa8259da0e
3 changed files with 21 additions and 4 deletions
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drivers/md/md-cluster.h
+1 -1
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@@ -21,7 +21,7 @@ struct md_cluster_operations {
int (*area_resyncing)(struct mddev *mddev, sector_t lo, sector_t hi);
int (*add_new_disk_start)(struct mddev *mddev, struct md_rdev *rdev);
int (*add_new_disk_finish)(struct mddev *mddev);
void (*new_disk_ack)(struct mddev *mddev, bool ack);
int (*new_disk_ack)(struct mddev *mddev, bool ack);
};
#endif /* _MD_CLUSTER_H */