A following patch adds an md misc control device, so that arrays can be managed without opening the md block device. Its code lives in a separate file and needs to look up arrays and reuse existing ioctl helpers.
Signed-off-by: Abd-Alrhman Masalkhi <[email protected]> --- drivers/md/md.c | 10 +++++----- drivers/md/md.h | 5 +++++ 2 files changed, 10 insertions(+), 5 deletions(-) diff --git a/drivers/md/md.c b/drivers/md/md.c index 680b34a63cb3..b5027d65c6d8 100644 --- a/drivers/md/md.c +++ b/drivers/md/md.c @@ -364,8 +364,8 @@ EXPORT_SYMBOL_GPL(md_new_event); * Enables to iterate over all existing md arrays * all_mddevs_lock protects this list. */ -static LIST_HEAD(all_mddevs); -static DEFINE_SPINLOCK(all_mddevs_lock); +LIST_HEAD(all_mddevs); +DEFINE_SPINLOCK(all_mddevs_lock); static bool is_md_suspended(struct mddev *mddev) { @@ -623,7 +623,7 @@ bool md_flush_request(struct mddev *mddev, struct bio *bio) } EXPORT_SYMBOL(md_flush_request); -static inline struct mddev *mddev_get(struct mddev *mddev) +struct mddev *mddev_get(struct mddev *mddev) { lockdep_assert_held(&all_mddevs_lock); @@ -8101,7 +8101,7 @@ static void put_cluster_ops(struct mddev *mddev) * Any differences that cannot be handled will cause an error. * Normally, only one change can be managed at a time. */ -static int update_array_info(struct mddev *mddev, mdu_array_info_t *info) +int update_array_info(struct mddev *mddev, mdu_array_info_t *info) { int rv = 0; int cnt = 0; @@ -8227,7 +8227,7 @@ static int update_array_info(struct mddev *mddev, mdu_array_info_t *info) return rv; } -static int set_disk_faulty(struct mddev *mddev, dev_t dev) +int set_disk_faulty(struct mddev *mddev, dev_t dev) { struct md_rdev *rdev; int err = 0; diff --git a/drivers/md/md.h b/drivers/md/md.h index b6d2e8929a0f..cb8760521764 100644 --- a/drivers/md/md.h +++ b/drivers/md/md.h @@ -953,6 +953,7 @@ extern int mddev_init(struct mddev *mddev); extern void mddev_destroy(struct mddev *mddev); void md_init_stacking_limits(struct queue_limits *lim); struct mddev *md_alloc(dev_t dev, char *name); +extern struct mddev *mddev_get(struct mddev *mddev); void mddev_put(struct mddev *mddev); extern int md_run(struct mddev *mddev); extern int md_start(struct mddev *mddev); @@ -974,6 +975,10 @@ extern void mddev_destroy_serial_pool(struct mddev *mddev, struct md_rdev *rdev); struct md_rdev *md_find_rdev_nr_rcu(struct mddev *mddev, int nr); struct md_rdev *md_find_rdev_rcu(struct mddev *mddev, dev_t dev); +int update_array_info(struct mddev *mddev, mdu_array_info_t *info); + +extern struct list_head all_mddevs; +extern spinlock_t all_mddevs_lock; static inline bool is_rdev_broken(struct md_rdev *rdev) { -- 2.43.0
