return NULL;
}
-static struct md_rdev * find_rdev(struct mddev * mddev, dev_t dev)
+static struct md_rdev *find_rdev_nr_rcu(struct mddev *mddev, int nr)
+{
+ struct md_rdev *rdev;
+
+ rdev_for_each_rcu(rdev, mddev)
+ if (rdev->desc_nr == nr)
+ return rdev;
+
+ return NULL;
+}
+
+static struct md_rdev *find_rdev(struct mddev *mddev, dev_t dev)
{
struct md_rdev *rdev;
return NULL;
}
+static struct md_rdev *find_rdev_rcu(struct mddev *mddev, dev_t dev)
+{
+ struct md_rdev *rdev;
+
+ rdev_for_each_rcu(rdev, mddev)
+ if (rdev->bdev->bd_dev == dev)
+ return rdev;
+
+ return NULL;
+}
+
static struct md_personality *find_pers(int level, char *clevel)
{
struct md_personality *pers;
/* Disable data integrity if non-capable/non-matching disk is being added */
void md_integrity_add_rdev(struct md_rdev *rdev, struct mddev *mddev)
{
- struct blk_integrity *bi_rdev = bdev_get_integrity(rdev->bdev);
- struct blk_integrity *bi_mddev = blk_get_integrity(mddev->gendisk);
+ struct blk_integrity *bi_rdev;
+ struct blk_integrity *bi_mddev;
+
+ if (!mddev->gendisk)
+ return;
+
+ bi_rdev = bdev_get_integrity(rdev->bdev);
+ bi_mddev = blk_get_integrity(mddev->gendisk);
if (!bi_mddev) /* nothing to do */
return;
return -EINVAL;
mddev->recovery_cp = n;
+ if (mddev->pers)
+ set_bit(MD_CHANGE_CLEAN, &mddev->flags);
return len;
}
static struct md_sysfs_entry md_resync_start =
set_bit(MD_RECOVERY_REQUESTED, &mddev->recovery);
set_bit(MD_RECOVERY_SYNC, &mddev->recovery);
}
+ if (mddev->ro == 2) {
+ /* A write to sync_action is enough to justify
+ * canceling read-auto mode
+ */
+ mddev->ro = 0;
+ md_wakeup_thread(mddev->sync_thread);
+ }
set_bit(MD_RECOVERY_NEEDED, &mddev->recovery);
md_wakeup_thread(mddev->thread);
sysfs_notify_dirent_safe(mddev->sysfs_action);
mismatch_cnt_show(struct mddev *mddev, char *page)
{
return sprintf(page, "%llu\n",
- (unsigned long long) mddev->resync_mismatches);
+ (unsigned long long)
+ atomic64_read(&mddev->resync_mismatches));
}
static struct md_sysfs_entry md_scan_mode =
if (!test_bit(MD_RECOVERY_RUNNING, &mddev->recovery))
return sprintf(page, "none\n");
+ if (mddev->curr_resync == 1 ||
+ mddev->curr_resync == 2)
+ return sprintf(page, "delayed\n");
+
if (test_bit(MD_RECOVERY_SYNC, &mddev->recovery) ||
test_bit(MD_RECOVERY_RESHAPE, &mddev->recovery))
max_sectors = mddev->resync_max_sectors;
mddev->new_layout = 0;
mddev->new_chunk_sectors = 0;
mddev->curr_resync = 0;
- mddev->resync_mismatches = 0;
+ atomic64_set(&mddev->resync_mismatches, 0);
mddev->suspend_lo = mddev->suspend_hi = 0;
mddev->sync_speed_min = mddev->sync_speed_max = 0;
mddev->recovery = 0;
int nr,working,insync,failed,spare;
struct md_rdev *rdev;
- nr=working=insync=failed=spare=0;
- rdev_for_each(rdev, mddev) {
+ nr = working = insync = failed = spare = 0;
+ rcu_read_lock();
+ rdev_for_each_rcu(rdev, mddev) {
nr++;
if (test_bit(Faulty, &rdev->flags))
failed++;
spare++;
}
}
+ rcu_read_unlock();
info.major_version = mddev->major_version;
info.minor_version = mddev->minor_version;
if (copy_from_user(&info, arg, sizeof(info)))
return -EFAULT;
- rdev = find_rdev_nr(mddev, info.number);
+ rcu_read_lock();
+ rdev = find_rdev_nr_rcu(mddev, info.number);
if (rdev) {
info.major = MAJOR(rdev->bdev->bd_dev);
info.minor = MINOR(rdev->bdev->bd_dev);
info.raid_disk = -1;
info.state = (1<<MD_DISK_REMOVED);
}
+ rcu_read_unlock();
if (copy_to_user(arg, &info, sizeof(info)))
return -EFAULT;
static int set_disk_faulty(struct mddev *mddev, dev_t dev)
{
struct md_rdev *rdev;
+ int err = 0;
if (mddev->pers == NULL)
return -ENODEV;
- rdev = find_rdev(mddev, dev);
+ rcu_read_lock();
+ rdev = find_rdev_rcu(mddev, dev);
if (!rdev)
- return -ENODEV;
-
- md_error(mddev, rdev);
- if (!test_bit(Faulty, &rdev->flags))
- return -EBUSY;
- return 0;
+ err = -ENODEV;
+ else {
+ md_error(mddev, rdev);
+ if (!test_bit(Faulty, &rdev->flags))
+ err = -EBUSY;
+ }
+ rcu_read_unlock();
+ return err;
}
/*
goto abort;
}
+ /* Some actions do not requires the mutex */
+ switch (cmd) {
+ case GET_ARRAY_INFO:
+ if (!mddev->raid_disks && !mddev->external)
+ err = -ENODEV;
+ else
+ err = get_array_info(mddev, argp);
+ goto abort;
+
+ case GET_DISK_INFO:
+ if (!mddev->raid_disks && !mddev->external)
+ err = -ENODEV;
+ else
+ err = get_disk_info(mddev, argp);
+ goto abort;
+
+ case SET_DISK_FAULTY:
+ err = set_disk_faulty(mddev, new_decode_dev(arg));
+ goto abort;
+ }
+
err = mddev_lock(mddev);
if (err) {
printk(KERN_INFO
*/
switch (cmd)
{
- case GET_ARRAY_INFO:
- err = get_array_info(mddev, argp);
- goto done_unlock;
-
case GET_BITMAP_FILE:
err = get_bitmap_file(mddev, argp);
goto done_unlock;
- case GET_DISK_INFO:
- err = get_disk_info(mddev, argp);
- goto done_unlock;
-
case RESTART_ARRAY_RW:
err = restart_array(mddev);
goto done_unlock;
err = hot_add_disk(mddev, new_decode_dev(arg));
goto done_unlock;
- case SET_DISK_FAULTY:
- err = set_disk_faulty(mddev, new_decode_dev(arg));
- goto done_unlock;
-
case RUN_ARRAY:
err = do_md_run(mddev);
goto done_unlock;
clear_bit(THREAD_WAKEUP, &thread->flags);
if (!kthread_should_stop())
- thread->run(thread->mddev);
+ thread->run(thread);
}
return 0;
}
}
-struct md_thread *md_register_thread(void (*run) (struct mddev *), struct mddev *mddev,
- const char *name)
+struct md_thread *md_register_thread(void (*run) (struct md_thread *),
+ struct mddev *mddev, const char *name)
{
struct md_thread *thread;
int scale;
unsigned int per_milli;
- resync = mddev->curr_resync - atomic_read(&mddev->recovery_active);
+ if (mddev->curr_resync <= 3)
+ resync = 0;
+ else
+ resync = mddev->curr_resync
+ - atomic_read(&mddev->recovery_active);
if (test_bit(MD_RECOVERY_SYNC, &mddev->recovery) ||
test_bit(MD_RECOVERY_RESHAPE, &mddev->recovery))
if (mddev->curr_resync > 2) {
status_resync(seq, mddev);
seq_printf(seq, "\n ");
- } else if (mddev->curr_resync == 1 || mddev->curr_resync == 2)
+ } else if (mddev->curr_resync >= 1)
seq_printf(seq, "\tresync=DELAYED\n ");
else if (mddev->recovery_cp < MaxSector)
seq_printf(seq, "\tresync=PENDING\n ");
#define SYNC_MARKS 10
#define SYNC_MARK_STEP (3*HZ)
-void md_do_sync(struct mddev *mddev)
+void md_do_sync(struct md_thread *thread)
{
+ struct mddev *mddev = thread->mddev;
struct mddev *mddev2;
unsigned int currspeed = 0,
window;
* which defaults to physical size, but can be virtual size
*/
max_sectors = mddev->resync_max_sectors;
- mddev->resync_mismatches = 0;
+ atomic64_set(&mddev->resync_mismatches, 0);
/* we don't use the checkpoint if there's a bitmap */
if (test_bit(MD_RECOVERY_REQUESTED, &mddev->recovery))
j = mddev->resync_min;
"md: resuming %s of %s from checkpoint.\n",
desc, mdname(mddev));
mddev->curr_resync = j;
- }
+ } else
+ mddev->curr_resync = 3; /* no longer delayed */
mddev->curr_resync_completed = j;
+ sysfs_notify(&mddev->kobj, NULL, "sync_completed");
+ md_new_event(mddev);
blk_start_plug(&plug);
while (j < max_sectors) {
break;
j += sectors;
- if (j>1) mddev->curr_resync = j;
+ if (j > 2)
+ mddev->curr_resync = j;
mddev->curr_mark_cnt = io_sectors;
if (last_check == 0)
/* this is the earliest that rebuild will be
int spares = 0;
int removed = 0;
- mddev->curr_resync_completed = 0;
-
rdev_for_each(rdev, mddev)
if (rdev->raid_disk >= 0 &&
!test_bit(Blocked, &rdev->flags) &&
/* Set RUNNING before clearing NEEDED to avoid
* any transients in the value of "sync_action".
*/
+ mddev->curr_resync_completed = 0;
set_bit(MD_RECOVERY_RUNNING, &mddev->recovery);
/* Clear some bits that don't mean anything, but
* might be left set
/* no recovery is running.
* remove any failed drives, then
* add spares if possible.
- * Spare are also removed and re-added, to allow
+ * Spares are also removed and re-added, to allow
* the personality to fail the re-add.
*/
projects / firefly-linux-kernel-4.4.55.git / blobdiff