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md: use new apis to suspend array for sysfs apis

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Convert to use new apis in following sysfs apis:
 - level_store
 - suspend_lo_store
 - suspend_hi_store
 - serialize_policy_store

These are not hot path, so performance is not concerned.

Signed-off-by: Yu Kuai <yukuai3@huawei.com>
Signed-off-by: Song Liu <song@kernel.org>
Link: https://lore.kernel.org/r/20231010151958.145896-11-yukuai1@huaweicloud.com
This commit is contained in:
Yu Kuai 2023-10-10 23:19:49 +08:00 committed by Song Liu
parent e28ca92fbb
commit 205669f377
1 changed files with 8 additions and 16 deletions
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24
drivers/md/md.c
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@ -4019,7 +4019,7 @@ level_store(struct mddev *mddev, const char *buf, size_t len)
if (slen == 0 || slen >= sizeof(clevel))
return -EINVAL;
rv = mddev_lock(mddev);
rv = mddev_suspend_and_lock(mddev);
if (rv)
return rv;
@ -4112,7 +4112,6 @@ level_store(struct mddev *mddev, const char *buf, size_t len)
}
/* Looks like we have a winner */
mddev_suspend(mddev);
mddev_detach(mddev);
spin_lock(&mddev->lock);
@ -4198,14 +4197,13 @@ level_store(struct mddev *mddev, const char *buf, size_t len)
blk_set_stacking_limits(&mddev->queue->limits);
pers->run(mddev);
set_bit(MD_SB_CHANGE_DEVS, &mddev->sb_flags);
mddev_resume(mddev);
if (!mddev->thread)
md_update_sb(mddev, 1);
sysfs_notify_dirent_safe(mddev->sysfs_level);
md_new_event();
rv = len;
out_unlock:
mddev_unlock(mddev);
mddev_unlock_and_resume(mddev);
return rv;
}
@ -5293,15 +5291,13 @@ suspend_lo_store(struct mddev *mddev, const char *buf, size_t len)
if (new != (sector_t)new)
return -EINVAL;
err = mddev_lock(mddev);
err = __mddev_suspend(mddev, true);
if (err)
return err;
mddev_suspend(mddev);
WRITE_ONCE(mddev->suspend_lo, new);
mddev_resume(mddev);
__mddev_resume(mddev);
mddev_unlock(mddev);
return len;
}
static struct md_sysfs_entry md_suspend_lo =
@ -5326,15 +5322,13 @@ suspend_hi_store(struct mddev *mddev, const char *buf, size_t len)
if (new != (sector_t)new)
return -EINVAL;
err = mddev_lock(mddev);
err = __mddev_suspend(mddev, true);
if (err)
return err;
mddev_suspend(mddev);
WRITE_ONCE(mddev->suspend_hi, new);
mddev_resume(mddev);
__mddev_resume(mddev);
mddev_unlock(mddev);
return len;
}
static struct md_sysfs_entry md_suspend_hi =
@ -5582,7 +5576,7 @@ serialize_policy_store(struct mddev *mddev, const char *buf, size_t len)
if (value == mddev->serialize_policy)
return len;
err = mddev_lock(mddev);
err = mddev_suspend_and_lock(mddev);
if (err)
return err;
if (mddev->pers == NULL || (mddev->pers->level != 1)) {
@ -5591,15 +5585,13 @@ serialize_policy_store(struct mddev *mddev, const char *buf, size_t len)
goto unlock;
}
mddev_suspend(mddev);
if (value)
mddev_create_serial_pool(mddev, NULL, true);
else
mddev_destroy_serial_pool(mddev, NULL, true);
mddev->serialize_policy = value;
mddev_resume(mddev);
unlock:
mddev_unlock(mddev);
mddev_unlock_and_resume(mddev);
return err ?: len;
}