aboutsummaryrefslogtreecommitdiffstats
path: root/drivers/md/md.c
diff options
context:
space:
mode:
Diffstat (limited to 'drivers/md/md.c')
-rw-r--r--drivers/md/md.c44
1 files changed, 28 insertions, 16 deletions
diff --git a/drivers/md/md.c b/drivers/md/md.c
index 9233c71138f1..709755fb6d7b 100644
--- a/drivers/md/md.c
+++ b/drivers/md/md.c
@@ -247,7 +247,6 @@ static void md_make_request(struct request_queue *q, struct bio *bio)
{
const int rw = bio_data_dir(bio);
struct mddev *mddev = q->queuedata;
- int cpu;
unsigned int sectors;
if (mddev == NULL || mddev->pers == NULL
@@ -284,10 +283,7 @@ static void md_make_request(struct request_queue *q, struct bio *bio)
sectors = bio_sectors(bio);
mddev->pers->make_request(mddev, bio);
- cpu = part_stat_lock();
- part_stat_inc(cpu, &mddev->gendisk->part0, ios[rw]);
- part_stat_add(cpu, &mddev->gendisk->part0, sectors[rw], sectors);
- part_stat_unlock();
+ generic_start_io_acct(rw, sectors, &mddev->gendisk->part0);
if (atomic_dec_and_test(&mddev->active_io) && mddev->suspended)
wake_up(&mddev->sb_wait);
@@ -2695,7 +2691,8 @@ static ssize_t new_offset_store(struct md_rdev *rdev,
if (kstrtoull(buf, 10, &new_offset) < 0)
return -EINVAL;
- if (mddev->sync_thread)
+ if (mddev->sync_thread ||
+ test_bit(MD_RECOVERY_RUNNING,&mddev->recovery))
return -EBUSY;
if (new_offset == rdev->data_offset)
/* reset is always permitted */
@@ -3272,6 +3269,7 @@ level_store(struct mddev *mddev, const char *buf, size_t len)
*/
if (mddev->sync_thread ||
+ test_bit(MD_RECOVERY_RUNNING, &mddev->recovery) ||
mddev->reshape_position != MaxSector ||
mddev->sysfs_active)
return -EBUSY;
@@ -4026,6 +4024,7 @@ action_store(struct mddev *mddev, const char *page, size_t len)
clear_bit(MD_RECOVERY_FROZEN, &mddev->recovery);
if (cmd_match(page, "idle") || cmd_match(page, "frozen")) {
+ flush_workqueue(md_misc_wq);
if (mddev->sync_thread) {
set_bit(MD_RECOVERY_INTR, &mddev->recovery);
md_reap_sync_thread(mddev);
@@ -5044,6 +5043,7 @@ static void md_clean(struct mddev *mddev)
static void __md_stop_writes(struct mddev *mddev)
{
set_bit(MD_RECOVERY_FROZEN, &mddev->recovery);
+ flush_workqueue(md_misc_wq);
if (mddev->sync_thread) {
set_bit(MD_RECOVERY_INTR, &mddev->recovery);
md_reap_sync_thread(mddev);
@@ -5104,19 +5104,22 @@ static int md_set_readonly(struct mddev *mddev, struct block_device *bdev)
set_bit(MD_RECOVERY_FROZEN, &mddev->recovery);
md_wakeup_thread(mddev->thread);
}
- if (mddev->sync_thread) {
+ if (test_bit(MD_RECOVERY_RUNNING, &mddev->recovery))
set_bit(MD_RECOVERY_INTR, &mddev->recovery);
+ if (mddev->sync_thread)
/* Thread might be blocked waiting for metadata update
* which will now never happen */
wake_up_process(mddev->sync_thread->tsk);
- }
+
mddev_unlock(mddev);
- wait_event(resync_wait, mddev->sync_thread == NULL);
+ wait_event(resync_wait, !test_bit(MD_RECOVERY_RUNNING,
+ &mddev->recovery));
mddev_lock_nointr(mddev);
mutex_lock(&mddev->open_mutex);
if ((mddev->pers && atomic_read(&mddev->openers) > !!bdev) ||
mddev->sync_thread ||
+ test_bit(MD_RECOVERY_RUNNING, &mddev->recovery) ||
(bdev && !test_bit(MD_STILL_CLOSED, &mddev->flags))) {
printk("md: %s still in use.\n",mdname(mddev));
if (did_freeze) {
@@ -5162,20 +5165,24 @@ static int do_md_stop(struct mddev *mddev, int mode,
set_bit(MD_RECOVERY_FROZEN, &mddev->recovery);
md_wakeup_thread(mddev->thread);
}
- if (mddev->sync_thread) {
+ if (test_bit(MD_RECOVERY_RUNNING, &mddev->recovery))
set_bit(MD_RECOVERY_INTR, &mddev->recovery);
+ if (mddev->sync_thread)
/* Thread might be blocked waiting for metadata update
* which will now never happen */
wake_up_process(mddev->sync_thread->tsk);
- }
+
mddev_unlock(mddev);
- wait_event(resync_wait, mddev->sync_thread == NULL);
+ wait_event(resync_wait, (mddev->sync_thread == NULL &&
+ !test_bit(MD_RECOVERY_RUNNING,
+ &mddev->recovery)));
mddev_lock_nointr(mddev);
mutex_lock(&mddev->open_mutex);
if ((mddev->pers && atomic_read(&mddev->openers) > !!bdev) ||
mddev->sysfs_active ||
mddev->sync_thread ||
+ test_bit(MD_RECOVERY_RUNNING, &mddev->recovery) ||
(bdev && !test_bit(MD_STILL_CLOSED, &mddev->flags))) {
printk("md: %s still in use.\n",mdname(mddev));
mutex_unlock(&mddev->open_mutex);
@@ -5950,7 +5957,8 @@ static int update_size(struct mddev *mddev, sector_t num_sectors)
* of each device. If num_sectors is zero, we find the largest size
* that fits.
*/
- if (mddev->sync_thread)
+ if (test_bit(MD_RECOVERY_RUNNING, &mddev->recovery) ||
+ mddev->sync_thread)
return -EBUSY;
if (mddev->ro)
return -EROFS;
@@ -5981,7 +5989,9 @@ static int update_raid_disks(struct mddev *mddev, int raid_disks)
if (raid_disks <= 0 ||
(mddev->max_disks && raid_disks >= mddev->max_disks))
return -EINVAL;
- if (mddev->sync_thread || mddev->reshape_position != MaxSector)
+ if (mddev->sync_thread ||
+ test_bit(MD_RECOVERY_RUNNING, &mddev->recovery) ||
+ mddev->reshape_position != MaxSector)
return -EBUSY;
rdev_for_each(rdev, mddev) {
@@ -6969,7 +6979,7 @@ static unsigned int mdstat_poll(struct file *filp, poll_table *wait)
int mask;
if (md_unloading)
- return POLLIN|POLLRDNORM|POLLERR|POLLPRI;;
+ return POLLIN|POLLRDNORM|POLLERR|POLLPRI;
poll_wait(filp, &md_event_waiters, wait);
/* always allow read */
@@ -7593,6 +7603,7 @@ static void md_start_sync(struct work_struct *ws)
clear_bit(MD_RECOVERY_REQUESTED, &mddev->recovery);
clear_bit(MD_RECOVERY_CHECK, &mddev->recovery);
clear_bit(MD_RECOVERY_RUNNING, &mddev->recovery);
+ wake_up(&resync_wait);
if (test_and_clear_bit(MD_RECOVERY_RECOVER,
&mddev->recovery))
if (mddev->sysfs_action)
@@ -7761,6 +7772,7 @@ void md_check_recovery(struct mddev *mddev)
not_running:
if (!mddev->sync_thread) {
clear_bit(MD_RECOVERY_RUNNING, &mddev->recovery);
+ wake_up(&resync_wait);
if (test_and_clear_bit(MD_RECOVERY_RECOVER,
&mddev->recovery))
if (mddev->sysfs_action)
@@ -7779,7 +7791,6 @@ void md_reap_sync_thread(struct mddev *mddev)
/* resync has finished, collect result */
md_unregister_thread(&mddev->sync_thread);
- wake_up(&resync_wait);
if (!test_bit(MD_RECOVERY_INTR, &mddev->recovery) &&
!test_bit(MD_RECOVERY_REQUESTED, &mddev->recovery)) {
/* success...*/
@@ -7807,6 +7818,7 @@ void md_reap_sync_thread(struct mddev *mddev)
clear_bit(MD_RECOVERY_RESHAPE, &mddev->recovery);
clear_bit(MD_RECOVERY_REQUESTED, &mddev->recovery);
clear_bit(MD_RECOVERY_CHECK, &mddev->recovery);
+ wake_up(&resync_wait);
/* flag recovery needed just to double check */
set_bit(MD_RECOVERY_NEEDED, &mddev->recovery);
sysfs_notify_dirent_safe(mddev->sysfs_action);
Copyright © 1996 – 2023 Jason A. Donenfeld. All Rights Reverse Engineered.