Due to changes in mdadm event handling and moving to udev based approach [1], more CHANGE uevents need to be added. Generate CHANGE uevents to give a udev based software (e.g. mdmonitor) chance to see changes in case of any array reconfiguration. Add emitting a new CHANGE uevent into md_new_event() to keep consistency with currently used mdstat based approach. [1] https://lore.kernel.org/linux-raid/20220907125657.12192-1-mateusz.grzonka@xxxxxxxxx/ Signed-off-by: Mateusz Grzonka <mateusz.grzonka@xxxxxxxxx> --- drivers/md/md.c | 31 ++++++++++++++++--------------- drivers/md/md.h | 2 +- drivers/md/raid10.c | 2 +- drivers/md/raid5.c | 2 +- 4 files changed, 19 insertions(+), 18 deletions(-) diff --git a/drivers/md/md.c b/drivers/md/md.c index 9dc0175280b4..47c1cde56783 100644 --- a/drivers/md/md.c +++ b/drivers/md/md.c @@ -354,10 +354,11 @@ static bool create_on_open = true; */ static DECLARE_WAIT_QUEUE_HEAD(md_event_waiters); static atomic_t md_event_count; -void md_new_event(void) +void md_new_event(struct mddev *mddev) { atomic_inc(&md_event_count); wake_up(&md_event_waiters); + kobject_uevent(&disk_to_dev(mddev->gendisk)->kobj, KOBJ_CHANGE); } EXPORT_SYMBOL_GPL(md_new_event); @@ -2852,7 +2853,7 @@ static int add_bound_rdev(struct md_rdev *rdev) if (mddev->degraded) set_bit(MD_RECOVERY_RECOVER, &mddev->recovery); set_bit(MD_RECOVERY_NEEDED, &mddev->recovery); - md_new_event(); + md_new_event(mddev); md_wakeup_thread(mddev->thread); return 0; } @@ -2972,7 +2973,7 @@ state_store(struct md_rdev *rdev, const char *buf, size_t len) set_bit(MD_SB_CHANGE_DEVS, &mddev->sb_flags); md_wakeup_thread(mddev->thread); } - md_new_event(); + md_new_event(mddev); } } } else if (cmd_match(buf, "writemostly")) { @@ -4070,7 +4071,7 @@ level_store(struct mddev *mddev, const char *buf, size_t len) if (!mddev->thread) md_update_sb(mddev, 1); sysfs_notify_dirent_safe(mddev->sysfs_level); - md_new_event(); + md_new_event(mddev); rv = len; out_unlock: mddev_unlock(mddev); @@ -4590,7 +4591,7 @@ new_dev_store(struct mddev *mddev, const char *buf, size_t len) export_rdev(rdev); mddev_unlock(mddev); if (!err) - md_new_event(); + md_new_event(mddev); return err ? err : len; } @@ -6024,7 +6025,7 @@ int md_run(struct mddev *mddev) if (mddev->sb_flags) md_update_sb(mddev, 0); - md_new_event(); + md_new_event(mddev); return 0; bitmap_abort: @@ -6411,7 +6412,7 @@ static int do_md_stop(struct mddev *mddev, int mode, if (mddev->hold_active == UNTIL_STOP) mddev->hold_active = 0; } - md_new_event(); + md_new_event(mddev); sysfs_notify_dirent_safe(mddev->sysfs_state); return 0; } @@ -6910,7 +6911,7 @@ static int hot_remove_disk(struct mddev *mddev, dev_t dev) md_wakeup_thread(mddev->thread); else md_update_sb(mddev, 1); - md_new_event(); + md_new_event(mddev); return 0; busy: @@ -6991,7 +6992,7 @@ static int hot_add_disk(struct mddev *mddev, dev_t dev) */ set_bit(MD_RECOVERY_NEEDED, &mddev->recovery); md_wakeup_thread(mddev->thread); - md_new_event(); + md_new_event(mddev); return 0; abort_export: @@ -7973,7 +7974,7 @@ void md_error(struct mddev *mddev, struct md_rdev *rdev) } if (mddev->event_work.func) queue_work(md_misc_wq, &mddev->event_work); - md_new_event(); + md_new_event(mddev); } EXPORT_SYMBOL(md_error); @@ -8893,7 +8894,7 @@ void md_do_sync(struct md_thread *thread) mddev->curr_resync = MD_RESYNC_ACTIVE; /* no longer delayed */ mddev->curr_resync_completed = j; sysfs_notify_dirent_safe(mddev->sysfs_completed); - md_new_event(); + md_new_event(mddev); update_time = jiffies; blk_start_plug(&plug); @@ -8964,7 +8965,7 @@ void md_do_sync(struct md_thread *thread) /* this is the earliest that rebuild will be * visible in /proc/mdstat */ - md_new_event(); + md_new_event(mddev); if (last_check + window > io_sectors || j == max_sectors) continue; @@ -9188,7 +9189,7 @@ static int remove_and_add_spares(struct mddev *mddev, sysfs_link_rdev(mddev, rdev); if (!test_bit(Journal, &rdev->flags)) spares++; - md_new_event(); + md_new_event(mddev); set_bit(MD_SB_CHANGE_DEVS, &mddev->sb_flags); } } @@ -9222,7 +9223,7 @@ static void md_start_sync(struct work_struct *ws) } else md_wakeup_thread(mddev->sync_thread); sysfs_notify_dirent_safe(mddev->sysfs_action); - md_new_event(); + md_new_event(mddev); } /* @@ -9483,7 +9484,7 @@ void md_reap_sync_thread(struct mddev *mddev) set_bit(MD_RECOVERY_NEEDED, &mddev->recovery); sysfs_notify_dirent_safe(mddev->sysfs_completed); sysfs_notify_dirent_safe(mddev->sysfs_action); - md_new_event(); + md_new_event(mddev); if (mddev->event_work.func) queue_work(md_misc_wq, &mddev->event_work); } diff --git a/drivers/md/md.h b/drivers/md/md.h index b4e2d8b87b61..2a25af01ec72 100644 --- a/drivers/md/md.h +++ b/drivers/md/md.h @@ -757,7 +757,7 @@ extern int md_super_wait(struct mddev *mddev); extern int sync_page_io(struct md_rdev *rdev, sector_t sector, int size, struct page *page, blk_opf_t opf, bool metadata_op); extern void md_do_sync(struct md_thread *thread); -extern void md_new_event(void); +extern void md_new_event(struct mddev *mddev); extern void md_allow_write(struct mddev *mddev); extern void md_wait_for_blocked_rdev(struct md_rdev *rdev, struct mddev *mddev); extern void md_set_array_sectors(struct mddev *mddev, sector_t array_sectors); diff --git a/drivers/md/raid10.c b/drivers/md/raid10.c index 58c711912875..5c858e39c162 100644 --- a/drivers/md/raid10.c +++ b/drivers/md/raid10.c @@ -4697,7 +4697,7 @@ static int raid10_start_reshape(struct mddev *mddev) } conf->reshape_checkpoint = jiffies; md_wakeup_thread(mddev->sync_thread); - md_new_event(); + md_new_event(mddev); return 0; abort: diff --git a/drivers/md/raid5.c b/drivers/md/raid5.c index 734f92e75f85..ad3eb87f60b7 100644 --- a/drivers/md/raid5.c +++ b/drivers/md/raid5.c @@ -8577,7 +8577,7 @@ static int raid5_start_reshape(struct mddev *mddev) } conf->reshape_checkpoint = jiffies; md_wakeup_thread(mddev->sync_thread); - md_new_event(); + md_new_event(mddev); return 0; } -- 2.26.2
