diff options
| author | Yu Kuai <yukuai3@huawei.com> | 2023-05-12 04:56:09 +0300 |
|---|---|---|
| committer | Song Liu <song@kernel.org> | 2023-06-14 01:13:21 +0300 |
| commit | 3e00777d51572bdd75cef29c9c31106b52d7cc8f (patch) | |
| tree | 24443a82e0f68ef994b8bea2532b4720c22a2fb9 /drivers/md | |
| parent | 431e61257d631157e1d374f1368febf37aa59f7c (diff) | |
| download | linux-3e00777d51572bdd75cef29c9c31106b52d7cc8f.tar.xz | |
md: add a new api prepare_suspend() in md_personality
There are no functional changes, the new api will be used later to do
special handling for raid456 in md_suspend().
Signed-off-by: Yu Kuai <yukuai3@huawei.com>
Signed-off-by: Song Liu <song@kernel.org>
Link: https://lore.kernel.org/r/20230512015610.821290-5-yukuai1@huaweicloud.com
Diffstat (limited to 'drivers/md')
| -rw-r--r-- | drivers/md/md.c | 4 | ||||
| -rw-r--r-- | drivers/md/md.h | 1 |
2 files changed, 5 insertions, 0 deletions
diff --git a/drivers/md/md.c b/drivers/md/md.c index fb060e381ae7..2f29d4e365c5 100644 --- a/drivers/md/md.c +++ b/drivers/md/md.c @@ -448,6 +448,10 @@ void mddev_suspend(struct mddev *mddev) wake_up(&mddev->sb_wait); set_bit(MD_ALLOW_SB_UPDATE, &mddev->flags); percpu_ref_kill(&mddev->active_io); + + if (mddev->pers->prepare_suspend) + mddev->pers->prepare_suspend(mddev); + wait_event(mddev->sb_wait, percpu_ref_is_zero(&mddev->active_io)); mddev->pers->quiesce(mddev, 1); clear_bit_unlock(MD_ALLOW_SB_UPDATE, &mddev->flags); diff --git a/drivers/md/md.h b/drivers/md/md.h index da173d6bf726..1eec65cf783c 100644 --- a/drivers/md/md.h +++ b/drivers/md/md.h @@ -631,6 +631,7 @@ struct md_personality int (*start_reshape) (struct mddev *mddev); void (*finish_reshape) (struct mddev *mddev); void (*update_reshape_pos) (struct mddev *mddev); + void (*prepare_suspend) (struct mddev *mddev); /* quiesce suspends or resumes internal processing. * 1 - stop new actions and wait for action io to complete * 0 - return to normal behaviour |