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md: clean up openers check in do_md_stop() and md_set_readonly()

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Before stopping or setting readonly, mddev_set_closing_and_sync_blockdev()
is always called to check the openers. So no longer need to check it again
in do_md_stop() and md_set_readonly(). Clean it up.

Signed-off-by: Li Nan <linan122@huawei.com>
Signed-off-by: Song Liu <song@kernel.org>
Link: https://lore.kernel.org/r/20240226031444.3606764-9-linan666@huaweicloud.com
This commit is contained in:
Li Nan
2024-02-26 11:14:43 +08:00
committed by Song Liu
parent 99b902ac17
commit 650b2e69ff
1 changed files with 14 additions and 23 deletions
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drivers/md/md.c
+14 -23
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@@ -4482,8 +4482,8 @@ array_state_show(struct mddev *mddev, char *page)
return sprintf(page, "%s\n", array_states[st]);
}
static int do_md_stop(struct mddev *mddev, int ro, struct block_device *bdev);
static int md_set_readonly(struct mddev *mddev, struct block_device *bdev);
static int do_md_stop(struct mddev *mddev, int ro);
static int md_set_readonly(struct mddev *mddev);
static int restart_array(struct mddev *mddev);
static ssize_t
@@ -4544,14 +4544,14 @@ array_state_store(struct mddev *mddev, const char *buf, size_t len)
case inactive:
/* stop an active array, return 0 otherwise */
if (mddev->pers)
err = do_md_stop(mddev, 2, NULL);
err = do_md_stop(mddev, 2);
break;
case clear:
err = do_md_stop(mddev, 0, NULL);
err = do_md_stop(mddev, 0);
break;
case readonly:
if (mddev->pers)
err = md_set_readonly(mddev, NULL);
err = md_set_readonly(mddev);
else {
mddev->ro = MD_RDONLY;
set_disk_ro(mddev->gendisk, 1);
@@ -4561,7 +4561,7 @@ array_state_store(struct mddev *mddev, const char *buf, size_t len)
case read_auto:
if (mddev->pers) {
if (md_is_rdwr(mddev))
err = md_set_readonly(mddev, NULL);
err = md_set_readonly(mddev);
else if (mddev->ro == MD_RDONLY)
err = restart_array(mddev);
if (err == 0) {
@@ -6420,7 +6420,7 @@ void md_stop(struct mddev *mddev)
EXPORT_SYMBOL_GPL(md_stop);
static int md_set_readonly(struct mddev *mddev, struct block_device *bdev)
static int md_set_readonly(struct mddev *mddev)
{
int err = 0;
int did_freeze = 0;
@@ -6438,9 +6438,7 @@ static int md_set_readonly(struct mddev *mddev, struct block_device *bdev)
!test_bit(MD_SB_CHANGE_PENDING, &mddev->sb_flags));
mddev_lock_nointr(mddev);
mutex_lock(&mddev->open_mutex);
if ((mddev->pers && atomic_read(&mddev->openers) > !!bdev) ||
test_bit(MD_RECOVERY_RUNNING, &mddev->recovery)) {
if (test_bit(MD_RECOVERY_RUNNING, &mddev->recovery)) {
pr_warn("md: %s still in use.\n",mdname(mddev));
err = -EBUSY;
goto out;
@@ -6465,7 +6463,6 @@ out:
sysfs_notify_dirent_safe(mddev->sysfs_state);
}
mutex_unlock(&mddev->open_mutex);
return err;
}
@@ -6473,8 +6470,7 @@ out:
* 0 - completely stop and dis-assemble array
* 2 - stop but do not disassemble array
*/
static int do_md_stop(struct mddev *mddev, int mode,
struct block_device *bdev)
static int do_md_stop(struct mddev *mddev, int mode)
{
struct gendisk *disk = mddev->gendisk;
struct md_rdev *rdev;
@@ -6487,12 +6483,9 @@ static int do_md_stop(struct mddev *mddev, int mode,
stop_sync_thread(mddev, true, false);
mutex_lock(&mddev->open_mutex);
if ((mddev->pers && atomic_read(&mddev->openers) > !!bdev) ||
mddev->sysfs_active ||
if (mddev->sysfs_active ||
test_bit(MD_RECOVERY_RUNNING, &mddev->recovery)) {
pr_warn("md: %s still in use.\n",mdname(mddev));
mutex_unlock(&mddev->open_mutex);
if (did_freeze) {
clear_bit(MD_RECOVERY_FROZEN, &mddev->recovery);
set_bit(MD_RECOVERY_NEEDED, &mddev->recovery);
@@ -6514,13 +6507,11 @@ static int do_md_stop(struct mddev *mddev, int mode,
sysfs_unlink_rdev(mddev, rdev);
set_capacity_and_notify(disk, 0);
mutex_unlock(&mddev->open_mutex);
mddev->changed = 1;
if (!md_is_rdwr(mddev))
mddev->ro = MD_RDWR;
} else
mutex_unlock(&mddev->open_mutex);
}
/*
* Free resources if final stop
*/
@@ -6566,7 +6557,7 @@ static void autorun_array(struct mddev *mddev)
err = do_md_run(mddev);
if (err) {
pr_warn("md: do_md_run() returned %d\n", err);
do_md_stop(mddev, 0, NULL);
do_md_stop(mddev, 0);
}
}
@@ -7735,11 +7726,11 @@ static int md_ioctl(struct block_device *bdev, blk_mode_t mode,
goto unlock;
case STOP_ARRAY:
err = do_md_stop(mddev, 0, bdev);
err = do_md_stop(mddev, 0);
goto unlock;
case STOP_ARRAY_RO:
err = md_set_readonly(mddev, bdev);
err = md_set_readonly(mddev);
goto unlock;
case HOT_REMOVE_DISK: