diff options
| author | Yu Kuai <yukuai3@huawei.com> | 2024-03-05 15:22:59 +0800 |
|---|---|---|
| committer | Song Liu <song@kernel.org> | 2024-03-05 12:53:32 -0800 |
| commit | 7a2347e284d7ec2f0759be4db60fa7ca937284fc (patch) | |
| tree | 6246ffadd66cb7f1da1318ceaa12ba6dfa357f58 /drivers/md/md.c | |
| parent | 2f03d0c2cd451c7ac2f317079d4ec518f0986b55 (diff) | |
md: export helpers to stop sync_thread
Add new helpers:
void md_idle_sync_thread(struct mddev *mddev);
void md_frozen_sync_thread(struct mddev *mddev);
void md_unfrozen_sync_thread(struct mddev *mddev);
The helpers will be used in dm-raid in later patches to fix regressions
and prevent calling md_reap_sync_thread() directly.
Cc: stable@vger.kernel.org # v6.7+
Signed-off-by: Yu Kuai <yukuai3@huawei.com>
Signed-off-by: Xiao Ni <xni@redhat.com>
Acked-by: Mike Snitzer <snitzer@kernel.org>
Signed-off-by: Song Liu <song@kernel.org>
Link: https://lore.kernel.org/r/20240305072306.2562024-3-yukuai1@huaweicloud.com
Diffstat (limited to 'drivers/md/md.c')
| -rw-r--r-- | drivers/md/md.c | 29 |
1 files changed, 29 insertions, 0 deletions
diff --git a/drivers/md/md.c b/drivers/md/md.c index 0c4e00e8d485..0bf2f7a53ed8 100644 --- a/drivers/md/md.c +++ b/drivers/md/md.c @@ -4942,6 +4942,35 @@ static void stop_sync_thread(struct mddev *mddev, bool locked, bool check_seq) mddev_lock_nointr(mddev); } +void md_idle_sync_thread(struct mddev *mddev) +{ + lockdep_assert_held(&mddev->reconfig_mutex); + + clear_bit(MD_RECOVERY_FROZEN, &mddev->recovery); + stop_sync_thread(mddev, true, true); +} +EXPORT_SYMBOL_GPL(md_idle_sync_thread); + +void md_frozen_sync_thread(struct mddev *mddev) +{ + lockdep_assert_held(&mddev->reconfig_mutex); + + set_bit(MD_RECOVERY_FROZEN, &mddev->recovery); + stop_sync_thread(mddev, true, false); +} +EXPORT_SYMBOL_GPL(md_frozen_sync_thread); + +void md_unfrozen_sync_thread(struct mddev *mddev) +{ + lockdep_assert_held(&mddev->reconfig_mutex); + + clear_bit(MD_RECOVERY_FROZEN, &mddev->recovery); + set_bit(MD_RECOVERY_NEEDED, &mddev->recovery); + md_wakeup_thread(mddev->thread); + sysfs_notify_dirent_safe(mddev->sysfs_action); +} +EXPORT_SYMBOL_GPL(md_unfrozen_sync_thread); + static void idle_sync_thread(struct mddev *mddev) { mutex_lock(&mddev->sync_mutex); |