static struct ctl_table_header *raid_table_header;
-static ctl_table raid_table[] = {
+static struct ctl_table raid_table[] = {
{
.procname = "speed_limit_min",
.data = &sysctl_speed_limit_min,
{ }
};
-static ctl_table raid_dir_table[] = {
+static struct ctl_table raid_dir_table[] = {
{
.procname = "raid",
.maxlen = 0,
{ }
};
-static ctl_table raid_root_table[] = {
+static struct ctl_table raid_root_table[] = {
{
.procname = "dev",
.maxlen = 0,
goto retry;
}
-static inline int mddev_lock(struct mddev * mddev)
+static inline int __must_check mddev_lock(struct mddev * mddev)
{
return mutex_lock_interruptible(&mddev->reconfig_mutex);
}
+/* Sometimes we need to take the lock in a situation where
+ * failure due to interrupts is not acceptable.
+ */
+static inline void mddev_lock_nointr(struct mddev * mddev)
+{
+ mutex_lock(&mddev->reconfig_mutex);
+}
+
static inline int mddev_is_locked(struct mddev *mddev)
{
return mutex_is_locked(&mddev->reconfig_mutex);
finish_wait(&mddev->sb_wait, &wq);
}
-static void bi_complete(struct bio *bio, int error)
-{
- complete((struct completion*)bio->bi_private);
-}
-
int sync_page_io(struct md_rdev *rdev, sector_t sector, int size,
struct page *page, int rw, bool metadata_op)
{
struct bio *bio = bio_alloc_mddev(GFP_NOIO, 1, rdev->mddev);
- struct completion event;
int ret;
rw |= REQ_SYNC;
else
bio->bi_sector = sector + rdev->data_offset;
bio_add_page(bio, page, size, 0);
- init_completion(&event);
- bio->bi_private = &event;
- bio->bi_end_io = bi_complete;
- submit_bio(rw, bio);
- wait_for_completion(&event);
+ submit_bio_wait(rw, bio);
ret = test_bit(BIO_UPTODATE, &bio->bi_flags);
bio_put(bio);
rdev->raid_disk = -1;
clear_bit(Faulty, &rdev->flags);
clear_bit(In_sync, &rdev->flags);
+ clear_bit(Bitmap_sync, &rdev->flags);
clear_bit(WriteMostly, &rdev->flags);
if (mddev->raid_disks == 0) {
*/
if (ev1 < mddev->bitmap->events_cleared)
return 0;
+ if (ev1 < mddev->events)
+ set_bit(Bitmap_sync, &rdev->flags);
} else {
if (ev1 < mddev->events)
/* just a hot-add of a new device, leave raid_disk at -1 */
rdev->raid_disk = -1;
clear_bit(Faulty, &rdev->flags);
clear_bit(In_sync, &rdev->flags);
+ clear_bit(Bitmap_sync, &rdev->flags);
clear_bit(WriteMostly, &rdev->flags);
if (mddev->raid_disks == 0) {
*/
if (ev1 < mddev->bitmap->events_cleared)
return 0;
+ if (ev1 < mddev->events)
+ set_bit(Bitmap_sync, &rdev->flags);
} else {
if (ev1 < mddev->events)
/* just a hot-add of a new device, leave raid_disk at -1 */
else
rdev->saved_raid_disk = -1;
clear_bit(In_sync, &rdev->flags);
+ clear_bit(Bitmap_sync, &rdev->flags);
err = rdev->mddev->pers->
hot_add_disk(rdev->mddev, rdev);
if (err) {
for_each_mddev(mddev, tmp) {
struct md_rdev *rdev2;
- mddev_lock(mddev);
+ mddev_lock_nointr(mddev);
rdev_for_each(rdev2, mddev)
if (rdev->bdev == rdev2->bdev &&
rdev != rdev2 &&
break;
}
}
- mddev_lock(my_mddev);
+ mddev_lock_nointr(my_mddev);
if (overlap) {
/* Someone else could have slipped in a size
* change here, but doing so is just silly.
mddev->in_sync = 1;
del_timer_sync(&mddev->safemode_timer);
}
+ blk_set_stacking_limits(&mddev->queue->limits);
pers->run(mddev);
set_bit(MD_CHANGE_DEVS, &mddev->flags);
mddev_resume(mddev);
void md_stop_writes(struct mddev *mddev)
{
- mddev_lock(mddev);
+ mddev_lock_nointr(mddev);
__md_stop_writes(mddev);
mddev_unlock(mddev);
}
static int md_set_readonly(struct mddev *mddev, struct block_device *bdev)
{
int err = 0;
+ int did_freeze = 0;
+
+ if (!test_bit(MD_RECOVERY_FROZEN, &mddev->recovery)) {
+ did_freeze = 1;
+ set_bit(MD_RECOVERY_FROZEN, &mddev->recovery);
+ md_wakeup_thread(mddev->thread);
+ }
+ if (mddev->sync_thread) {
+ set_bit(MD_RECOVERY_INTR, &mddev->recovery);
+ /* 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);
+ mddev_lock_nointr(mddev);
+
mutex_lock(&mddev->open_mutex);
- if (atomic_read(&mddev->openers) > !!bdev) {
+ if (atomic_read(&mddev->openers) > !!bdev ||
+ mddev->sync_thread ||
+ (bdev && !test_bit(MD_STILL_CLOSED, &mddev->flags))) {
printk("md: %s still in use.\n",mdname(mddev));
+ if (did_freeze) {
+ clear_bit(MD_RECOVERY_FROZEN, &mddev->recovery);
+ md_wakeup_thread(mddev->thread);
+ }
err = -EBUSY;
goto out;
}
- if (bdev && !test_bit(MD_STILL_CLOSED, &mddev->flags)) {
- /* Someone opened the device since we flushed it
- * so page cache could be dirty and it is too late
- * to flush. So abort
- */
- mutex_unlock(&mddev->open_mutex);
- return -EBUSY;
- }
if (mddev->pers) {
__md_stop_writes(mddev);
set_disk_ro(mddev->gendisk, 1);
clear_bit(MD_RECOVERY_FROZEN, &mddev->recovery);
sysfs_notify_dirent_safe(mddev->sysfs_state);
- err = 0;
+ err = 0;
}
out:
mutex_unlock(&mddev->open_mutex);
{
struct gendisk *disk = mddev->gendisk;
struct md_rdev *rdev;
+ int did_freeze = 0;
+
+ if (!test_bit(MD_RECOVERY_FROZEN, &mddev->recovery)) {
+ did_freeze = 1;
+ set_bit(MD_RECOVERY_FROZEN, &mddev->recovery);
+ md_wakeup_thread(mddev->thread);
+ }
+ if (mddev->sync_thread) {
+ set_bit(MD_RECOVERY_INTR, &mddev->recovery);
+ /* 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);
+ mddev_lock_nointr(mddev);
mutex_lock(&mddev->open_mutex);
if (atomic_read(&mddev->openers) > !!bdev ||
- mddev->sysfs_active) {
+ mddev->sysfs_active ||
+ mddev->sync_thread ||
+ (bdev && !test_bit(MD_STILL_CLOSED, &mddev->flags))) {
printk("md: %s still in use.\n",mdname(mddev));
mutex_unlock(&mddev->open_mutex);
- return -EBUSY;
- }
- if (bdev && !test_bit(MD_STILL_CLOSED, &mddev->flags)) {
- /* Someone opened the device since we flushed it
- * so page cache could be dirty and it is too late
- * to flush. So abort
- */
- mutex_unlock(&mddev->open_mutex);
+ if (did_freeze) {
+ clear_bit(MD_RECOVERY_FROZEN, &mddev->recovery);
+ md_wakeup_thread(mddev->thread);
+ }
return -EBUSY;
}
if (mddev->pers) {
info->raid_disk < mddev->raid_disks) {
rdev->raid_disk = info->raid_disk;
set_bit(In_sync, &rdev->flags);
+ clear_bit(Bitmap_sync, &rdev->flags);
} else
rdev->raid_disk = -1;
} else
wait_event(mddev->sb_wait,
!test_bit(MD_CHANGE_DEVS, &mddev->flags) &&
!test_bit(MD_CHANGE_PENDING, &mddev->flags));
- mddev_lock(mddev);
+ mddev_lock_nointr(mddev);
}
} else {
err = -EROFS;
mddev->curr_resync = 2;
try_again:
- if (kthread_should_stop())
- set_bit(MD_RECOVERY_INTR, &mddev->recovery);
-
if (test_bit(MD_RECOVERY_INTR, &mddev->recovery))
goto skip;
for_each_mddev(mddev2, tmp) {
* be caught by 'softlockup'
*/
prepare_to_wait(&resync_wait, &wq, TASK_INTERRUPTIBLE);
- if (!kthread_should_stop() &&
+ if (!test_bit(MD_RECOVERY_INTR, &mddev->recovery) &&
mddev2->curr_resync >= mddev->curr_resync) {
printk(KERN_INFO "md: delaying %s of %s"
" until %s has finished (they"
last_check = 0;
if (j>2) {
- printk(KERN_INFO
+ printk(KERN_INFO
"md: resuming %s of %s from checkpoint.\n",
desc, mdname(mddev));
mddev->curr_resync = j;
sysfs_notify(&mddev->kobj, NULL, "sync_completed");
}
- while (j >= mddev->resync_max && !kthread_should_stop()) {
+ while (j >= mddev->resync_max &&
+ !test_bit(MD_RECOVERY_INTR, &mddev->recovery)) {
/* As this condition is controlled by user-space,
* we can block indefinitely, so use '_interruptible'
* to avoid triggering warnings.
flush_signals(current); /* just in case */
wait_event_interruptible(mddev->recovery_wait,
mddev->resync_max > j
- || kthread_should_stop());
+ || test_bit(MD_RECOVERY_INTR,
+ &mddev->recovery));
}
- if (kthread_should_stop())
- goto interrupted;
+ if (test_bit(MD_RECOVERY_INTR, &mddev->recovery))
+ break;
sectors = mddev->pers->sync_request(mddev, j, &skipped,
currspeed < speed_min(mddev));
if (sectors == 0) {
set_bit(MD_RECOVERY_INTR, &mddev->recovery);
- goto out;
+ break;
}
if (!skipped) { /* actual IO requested */
last_mark = next;
}
-
- if (kthread_should_stop())
- goto interrupted;
-
+ if (test_bit(MD_RECOVERY_INTR, &mddev->recovery))
+ break;
/*
* this loop exits only if either when we are slower than
}
}
}
- printk(KERN_INFO "md: %s: %s done.\n",mdname(mddev), desc);
+ printk(KERN_INFO "md: %s: %s %s.\n",mdname(mddev), desc,
+ test_bit(MD_RECOVERY_INTR, &mddev->recovery)
+ ? "interrupted" : "done");
/*
* this also signals 'finished resyncing' to md_stop
*/
- out:
blk_finish_plug(&plug);
wait_event(mddev->recovery_wait, !atomic_read(&mddev->recovery_active));
set_bit(MD_RECOVERY_DONE, &mddev->recovery);
md_wakeup_thread(mddev->thread);
return;
-
- interrupted:
- /*
- * got a signal, exit.
- */
- printk(KERN_INFO
- "md: md_do_sync() got signal ... exiting\n");
- set_bit(MD_RECOVERY_INTR, &mddev->recovery);
- goto out;
-
}
EXPORT_SYMBOL_GPL(md_do_sync);
if (test_bit(Faulty, &rdev->flags))
continue;
if (mddev->ro &&
- rdev->saved_raid_disk < 0)
+ ! (rdev->saved_raid_disk >= 0 &&
+ !test_bit(Bitmap_sync, &rdev->flags)))
continue;
rdev->recovery_offset = 0;
if (mddev->ro && !test_bit(MD_RECOVERY_NEEDED, &mddev->recovery))
return;
if ( ! (
- (mddev->flags & ~ (1<<MD_CHANGE_PENDING)) ||
+ (mddev->flags & MD_UPDATE_SB_FLAGS & ~ (1<<MD_CHANGE_PENDING)) ||
test_bit(MD_RECOVERY_NEEDED, &mddev->recovery) ||
test_bit(MD_RECOVERY_DONE, &mddev->recovery) ||
(mddev->external == 0 && mddev->safemode == 1) ||
* As we only add devices that are already in-sync,
* we can activate the spares immediately.
*/
- clear_bit(MD_RECOVERY_NEEDED, &mddev->recovery);
remove_and_add_spares(mddev, NULL);
- mddev->pers->spare_active(mddev);
+ /* There is no thread, but we need to call
+ * ->spare_active and clear saved_raid_disk
+ */
+ md_reap_sync_thread(mddev);
+ clear_bit(MD_RECOVERY_NEEDED, &mddev->recovery);
goto unlock;
}
/* 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...*/
projects / firefly-linux-kernel-4.4.55.git / blobdiff