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-rw-r--r--drivers/md/md.c315
1 files changed, 163 insertions, 152 deletions
diff --git a/drivers/md/md.c b/drivers/md/md.c
index f54012d684..e575e74aab 100644
--- a/drivers/md/md.c
+++ b/drivers/md/md.c
@@ -65,7 +65,6 @@
#include <linux/percpu-refcount.h>
#include <linux/part_stat.h>
-#include <trace/events/block.h>
#include "md.h"
#include "md-bitmap.h"
#include "md-cluster.h"
@@ -520,6 +519,24 @@ void mddev_resume(struct mddev *mddev)
}
EXPORT_SYMBOL_GPL(mddev_resume);
+/* sync bdev before setting device to readonly or stopping raid*/
+static int mddev_set_closing_and_sync_blockdev(struct mddev *mddev, int opener_num)
+{
+ mutex_lock(&mddev->open_mutex);
+ if (mddev->pers && atomic_read(&mddev->openers) > opener_num) {
+ mutex_unlock(&mddev->open_mutex);
+ return -EBUSY;
+ }
+ if (test_and_set_bit(MD_CLOSING, &mddev->flags)) {
+ mutex_unlock(&mddev->open_mutex);
+ return -EBUSY;
+ }
+ mutex_unlock(&mddev->open_mutex);
+
+ sync_blockdev(mddev->gendisk->part0);
+ return 0;
+}
+
/*
* Generic flush handling for md
*/
@@ -2397,7 +2414,7 @@ int md_integrity_register(struct mddev *mddev)
if (list_empty(&mddev->disks))
return 0; /* nothing to do */
- if (!mddev->gendisk || blk_get_integrity(mddev->gendisk))
+ if (mddev_is_dm(mddev) || blk_get_integrity(mddev->gendisk))
return 0; /* shouldn't register, or already is */
rdev_for_each(rdev, mddev) {
/* skip spares and non-functional disks */
@@ -2450,7 +2467,7 @@ int md_integrity_add_rdev(struct md_rdev *rdev, struct mddev *mddev)
{
struct blk_integrity *bi_mddev;
- if (!mddev->gendisk)
+ if (mddev_is_dm(mddev))
return 0;
bi_mddev = blk_get_integrity(mddev->gendisk);
@@ -2574,7 +2591,7 @@ static void export_rdev(struct md_rdev *rdev, struct mddev *mddev)
if (test_bit(AutoDetected, &rdev->flags))
md_autodetect_dev(rdev->bdev->bd_dev);
#endif
- bdev_release(rdev->bdev_handle);
+ fput(rdev->bdev_file);
rdev->bdev = NULL;
kobject_put(&rdev->kobj);
}
@@ -2587,7 +2604,7 @@ static void md_kick_rdev_from_array(struct md_rdev *rdev)
list_del_rcu(&rdev->same_set);
pr_debug("md: unbind<%pg>\n", rdev->bdev);
mddev_destroy_serial_pool(rdev->mddev, rdev);
- rdev->mddev = NULL;
+ WRITE_ONCE(rdev->mddev, NULL);
sysfs_remove_link(&rdev->kobj, "block");
sysfs_put(rdev->sysfs_state);
sysfs_put(rdev->sysfs_unack_badblocks);
@@ -2843,8 +2860,7 @@ repeat:
pr_debug("md: updating %s RAID superblock on device (in sync %d)\n",
mdname(mddev), mddev->in_sync);
- if (mddev->queue)
- blk_add_trace_msg(mddev->queue, "md md_update_sb");
+ mddev_add_trace_msg(mddev, "md md_update_sb");
rewrite:
md_bitmap_update_sb(mddev->bitmap);
rdev_for_each(rdev, mddev) {
@@ -2925,7 +2941,6 @@ static int add_bound_rdev(struct md_rdev *rdev)
set_bit(MD_RECOVERY_RECOVER, &mddev->recovery);
set_bit(MD_RECOVERY_NEEDED, &mddev->recovery);
md_new_event();
- md_wakeup_thread(mddev->thread);
return 0;
}
@@ -3040,10 +3055,8 @@ state_store(struct md_rdev *rdev, const char *buf, size_t len)
if (err == 0) {
md_kick_rdev_from_array(rdev);
- if (mddev->pers) {
+ if (mddev->pers)
set_bit(MD_SB_CHANGE_DEVS, &mddev->sb_flags);
- md_wakeup_thread(mddev->thread);
- }
md_new_event();
}
}
@@ -3073,7 +3086,6 @@ state_store(struct md_rdev *rdev, const char *buf, size_t len)
clear_bit(BlockedBadBlocks, &rdev->flags);
wake_up(&rdev->blocked_wait);
set_bit(MD_RECOVERY_NEEDED, &rdev->mddev->recovery);
- md_wakeup_thread(rdev->mddev->thread);
err = 0;
} else if (cmd_match(buf, "insync") && rdev->raid_disk == -1) {
@@ -3111,7 +3123,6 @@ state_store(struct md_rdev *rdev, const char *buf, size_t len)
!test_bit(Replacement, &rdev->flags))
set_bit(WantReplacement, &rdev->flags);
set_bit(MD_RECOVERY_NEEDED, &rdev->mddev->recovery);
- md_wakeup_thread(rdev->mddev->thread);
err = 0;
} else if (cmd_match(buf, "-want_replacement")) {
/* Clearing 'want_replacement' is always allowed.
@@ -3241,7 +3252,6 @@ slot_store(struct md_rdev *rdev, const char *buf, size_t len)
if (rdev->raid_disk >= 0)
return -EBUSY;
set_bit(MD_RECOVERY_NEEDED, &rdev->mddev->recovery);
- md_wakeup_thread(rdev->mddev->thread);
} else if (rdev->mddev->pers) {
/* Activating a spare .. or possibly reactivating
* if we ever get bitmaps working here.
@@ -3335,8 +3345,7 @@ static ssize_t new_offset_store(struct md_rdev *rdev,
if (kstrtoull(buf, 10, &new_offset) < 0)
return -EINVAL;
- if (mddev->sync_thread ||
- test_bit(MD_RECOVERY_RUNNING,&mddev->recovery))
+ if (test_bit(MD_RECOVERY_RUNNING, &mddev->recovery))
return -EBUSY;
if (new_offset == rdev->data_offset)
/* reset is always permitted */
@@ -3667,7 +3676,7 @@ rdev_attr_store(struct kobject *kobj, struct attribute *attr,
struct kernfs_node *kn = NULL;
bool suspend = false;
ssize_t rv;
- struct mddev *mddev = rdev->mddev;
+ struct mddev *mddev = READ_ONCE(rdev->mddev);
if (!entry->store)
return -EIO;
@@ -3769,16 +3778,16 @@ static struct md_rdev *md_import_device(dev_t newdev, int super_format, int supe
if (err)
goto out_clear_rdev;
- rdev->bdev_handle = bdev_open_by_dev(newdev,
+ rdev->bdev_file = bdev_file_open_by_dev(newdev,
BLK_OPEN_READ | BLK_OPEN_WRITE,
super_format == -2 ? &claim_rdev : rdev, NULL);
- if (IS_ERR(rdev->bdev_handle)) {
+ if (IS_ERR(rdev->bdev_file)) {
pr_warn("md: could not open device unknown-block(%u,%u).\n",
MAJOR(newdev), MINOR(newdev));
- err = PTR_ERR(rdev->bdev_handle);
+ err = PTR_ERR(rdev->bdev_file);
goto out_clear_rdev;
}
- rdev->bdev = rdev->bdev_handle->bdev;
+ rdev->bdev = file_bdev(rdev->bdev_file);
kobject_init(&rdev->kobj, &rdev_ktype);
@@ -3809,7 +3818,7 @@ static struct md_rdev *md_import_device(dev_t newdev, int super_format, int supe
return rdev;
out_blkdev_put:
- bdev_release(rdev->bdev_handle);
+ fput(rdev->bdev_file);
out_clear_rdev:
md_rdev_clear(rdev);
out_free_rdev:
@@ -4009,8 +4018,7 @@ level_store(struct mddev *mddev, const char *buf, size_t len)
*/
rv = -EBUSY;
- if (mddev->sync_thread ||
- test_bit(MD_RECOVERY_RUNNING, &mddev->recovery) ||
+ if (test_bit(MD_RECOVERY_RUNNING, &mddev->recovery) ||
mddev->reshape_position != MaxSector ||
mddev->sysfs_active)
goto out_unlock;
@@ -4160,7 +4168,6 @@ level_store(struct mddev *mddev, const char *buf, size_t len)
mddev->in_sync = 1;
del_timer_sync(&mddev->safemode_timer);
}
- blk_set_stacking_limits(&mddev->queue->limits);
pers->run(mddev);
set_bit(MD_SB_CHANGE_DEVS, &mddev->sb_flags);
if (!mddev->thread)
@@ -4467,8 +4474,8 @@ 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
@@ -4485,6 +4492,17 @@ array_state_store(struct mddev *mddev, const char *buf, size_t len)
case broken: /* cannot be set */
case bad_word:
return -EINVAL;
+ case clear:
+ case readonly:
+ case inactive:
+ case read_auto:
+ if (!mddev->pers || !md_is_rdwr(mddev))
+ break;
+ /* write sysfs will not open mddev and opener should be 0 */
+ err = mddev_set_closing_and_sync_blockdev(mddev, 0);
+ if (err)
+ return err;
+ break;
default:
break;
}
@@ -4518,14 +4536,14 @@ 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);
@@ -4535,7 +4553,7 @@ 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) {
@@ -4584,6 +4602,11 @@ array_state_store(struct mddev *mddev, const char *buf, size_t len)
sysfs_notify_dirent_safe(mddev->sysfs_state);
}
mddev_unlock(mddev);
+
+ if (st == readonly || st == read_auto || st == inactive ||
+ (err && st == clear))
+ clear_bit(MD_CLOSING, &mddev->flags);
+
return err ?: len;
}
static struct md_sysfs_entry md_array_state =
@@ -5731,6 +5754,51 @@ static const struct kobj_type md_ktype = {
int mdp_major = 0;
+/* stack the limit for all rdevs into lim */
+void mddev_stack_rdev_limits(struct mddev *mddev, struct queue_limits *lim)
+{
+ struct md_rdev *rdev;
+
+ rdev_for_each(rdev, mddev) {
+ queue_limits_stack_bdev(lim, rdev->bdev, rdev->data_offset,
+ mddev->gendisk->disk_name);
+ }
+}
+EXPORT_SYMBOL_GPL(mddev_stack_rdev_limits);
+
+/* apply the extra stacking limits from a new rdev into mddev */
+int mddev_stack_new_rdev(struct mddev *mddev, struct md_rdev *rdev)
+{
+ struct queue_limits lim;
+
+ if (mddev_is_dm(mddev))
+ return 0;
+
+ lim = queue_limits_start_update(mddev->gendisk->queue);
+ queue_limits_stack_bdev(&lim, rdev->bdev, rdev->data_offset,
+ mddev->gendisk->disk_name);
+ return queue_limits_commit_update(mddev->gendisk->queue, &lim);
+}
+EXPORT_SYMBOL_GPL(mddev_stack_new_rdev);
+
+/* update the optimal I/O size after a reshape */
+void mddev_update_io_opt(struct mddev *mddev, unsigned int nr_stripes)
+{
+ struct queue_limits lim;
+
+ if (mddev_is_dm(mddev))
+ return;
+
+ /* don't bother updating io_opt if we can't suspend the array */
+ if (mddev_suspend(mddev, false) < 0)
+ return;
+ lim = queue_limits_start_update(mddev->gendisk->queue);
+ lim.io_opt = lim.io_min * nr_stripes;
+ queue_limits_commit_update(mddev->gendisk->queue, &lim);
+ mddev_resume(mddev);
+}
+EXPORT_SYMBOL_GPL(mddev_update_io_opt);
+
static void mddev_delayed_delete(struct work_struct *ws)
{
struct mddev *mddev = container_of(ws, struct mddev, del_work);
@@ -5795,10 +5863,11 @@ struct mddev *md_alloc(dev_t dev, char *name)
*/
mddev->hold_active = UNTIL_STOP;
- error = -ENOMEM;
- disk = blk_alloc_disk(NUMA_NO_NODE);
- if (!disk)
+ disk = blk_alloc_disk(NULL, NUMA_NO_NODE);
+ if (IS_ERR(disk)) {
+ error = PTR_ERR(disk);
goto out_free_mddev;
+ }
disk->major = MAJOR(mddev->unit);
disk->first_minor = unit << shift;
@@ -5812,9 +5881,7 @@ struct mddev *md_alloc(dev_t dev, char *name)
disk->fops = &md_fops;
disk->private_data = mddev;
- mddev->queue = disk->queue;
- blk_set_stacking_limits(&mddev->queue->limits);
- blk_queue_write_cache(mddev->queue, true, true);
+ blk_queue_write_cache(disk->queue, true, true);
disk->events |= DISK_EVENT_MEDIA_CHANGE;
mddev->gendisk = disk;
error = add_disk(disk);
@@ -5956,7 +6023,7 @@ int md_run(struct mddev *mddev)
invalidate_bdev(rdev->bdev);
if (mddev->ro != MD_RDONLY && rdev_read_only(rdev)) {
mddev->ro = MD_RDONLY;
- if (mddev->gendisk)
+ if (!mddev_is_dm(mddev))
set_disk_ro(mddev->gendisk, 1);
}
@@ -6118,7 +6185,8 @@ int md_run(struct mddev *mddev)
}
}
- if (mddev->queue) {
+ if (!mddev_is_dm(mddev)) {
+ struct request_queue *q = mddev->gendisk->queue;
bool nonrot = true;
rdev_for_each(rdev, mddev) {
@@ -6130,14 +6198,14 @@ int md_run(struct mddev *mddev)
if (mddev->degraded)
nonrot = false;
if (nonrot)
- blk_queue_flag_set(QUEUE_FLAG_NONROT, mddev->queue);
+ blk_queue_flag_set(QUEUE_FLAG_NONROT, q);
else
- blk_queue_flag_clear(QUEUE_FLAG_NONROT, mddev->queue);
- blk_queue_flag_set(QUEUE_FLAG_IO_STAT, mddev->queue);
+ blk_queue_flag_clear(QUEUE_FLAG_NONROT, q);
+ blk_queue_flag_set(QUEUE_FLAG_IO_STAT, q);
/* Set the NOWAIT flags if all underlying devices support it */
if (nowait)
- blk_queue_flag_set(QUEUE_FLAG_NOWAIT, mddev->queue);
+ blk_queue_flag_set(QUEUE_FLAG_NOWAIT, q);
}
if (pers->sync_request) {
if (mddev->kobj.sd &&
@@ -6216,7 +6284,6 @@ int do_md_run(struct mddev *mddev)
/* run start up tasks that require md_thread */
md_start(mddev);
- md_wakeup_thread(mddev->thread);
md_wakeup_thread(mddev->sync_thread); /* possibly kick off a reshape */
set_capacity_and_notify(mddev->gendisk, mddev->array_sectors);
@@ -6237,7 +6304,6 @@ int md_start(struct mddev *mddev)
if (mddev->pers->start) {
set_bit(MD_RECOVERY_WAIT, &mddev->recovery);
- md_wakeup_thread(mddev->thread);
ret = mddev->pers->start(mddev);
clear_bit(MD_RECOVERY_WAIT, &mddev->recovery);
md_wakeup_thread(mddev->sync_thread);
@@ -6282,7 +6348,6 @@ static int restart_array(struct mddev *mddev)
pr_debug("md: %s switched to read-write mode.\n", mdname(mddev));
/* Kick recovery or resync if necessary */
set_bit(MD_RECOVERY_NEEDED, &mddev->recovery);
- md_wakeup_thread(mddev->thread);
md_wakeup_thread(mddev->sync_thread);
sysfs_notify_dirent_safe(mddev->sysfs_state);
return 0;
@@ -6386,8 +6451,10 @@ static void mddev_detach(struct mddev *mddev)
mddev->pers->quiesce(mddev, 0);
}
md_unregister_thread(mddev, &mddev->thread);
- if (mddev->queue)
- blk_sync_queue(mddev->queue); /* the unplug fn references 'conf'*/
+
+ /* the unplug fn references 'conf' */
+ if (!mddev_is_dm(mddev))
+ blk_sync_queue(mddev->gendisk->queue);
}
static void __md_stop(struct mddev *mddev)
@@ -6424,7 +6491,8 @@ void md_stop(struct mddev *mddev)
EXPORT_SYMBOL_GPL(md_stop);
-static int md_set_readonly(struct mddev *mddev, struct block_device *bdev)
+/* ensure 'mddev->pers' exist before calling md_set_readonly() */
+static int md_set_readonly(struct mddev *mddev)
{
int err = 0;
int did_freeze = 0;
@@ -6435,7 +6503,6 @@ static int md_set_readonly(struct mddev *mddev, struct block_device *bdev)
if (!test_bit(MD_RECOVERY_FROZEN, &mddev->recovery)) {
did_freeze = 1;
set_bit(MD_RECOVERY_FROZEN, &mddev->recovery);
- md_wakeup_thread(mddev->thread);
}
stop_sync_thread(mddev, false, false);
@@ -6443,36 +6510,29 @@ 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) ||
- mddev->sync_thread ||
- 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;
}
- if (mddev->pers) {
- __md_stop_writes(mddev);
-
- if (mddev->ro == MD_RDONLY) {
- err = -ENXIO;
- goto out;
- }
+ __md_stop_writes(mddev);
- mddev->ro = MD_RDONLY;
- set_disk_ro(mddev->gendisk, 1);
+ if (mddev->ro == MD_RDONLY) {
+ err = -ENXIO;
+ goto out;
}
+ mddev->ro = MD_RDONLY;
+ set_disk_ro(mddev->gendisk, 1);
+
out:
- if ((mddev->pers && !err) || did_freeze) {
+ if (!err || did_freeze) {
clear_bit(MD_RECOVERY_FROZEN, &mddev->recovery);
set_bit(MD_RECOVERY_NEEDED, &mddev->recovery);
- md_wakeup_thread(mddev->thread);
sysfs_notify_dirent_safe(mddev->sysfs_state);
}
- mutex_unlock(&mddev->open_mutex);
return err;
}
@@ -6480,8 +6540,7 @@ 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;
@@ -6490,22 +6549,16 @@ static int do_md_stop(struct mddev *mddev, int mode,
if (!test_bit(MD_RECOVERY_FROZEN, &mddev->recovery)) {
did_freeze = 1;
set_bit(MD_RECOVERY_FROZEN, &mddev->recovery);
- md_wakeup_thread(mddev->thread);
}
stop_sync_thread(mddev, true, false);
- mutex_lock(&mddev->open_mutex);
- if ((mddev->pers && atomic_read(&mddev->openers) > !!bdev) ||
- mddev->sysfs_active ||
- mddev->sync_thread ||
+ 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);
- md_wakeup_thread(mddev->thread);
}
return -EBUSY;
}
@@ -6524,13 +6577,11 @@ 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
*/
@@ -6576,7 +6627,7 @@ 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);
}
}
@@ -7046,9 +7097,7 @@ kick_rdev:
md_kick_rdev_from_array(rdev);
set_bit(MD_SB_CHANGE_DEVS, &mddev->sb_flags);
- if (mddev->thread)
- md_wakeup_thread(mddev->thread);
- else
+ if (!mddev->thread)
md_update_sb(mddev, 1);
md_new_event();
@@ -7123,14 +7172,13 @@ static int hot_add_disk(struct mddev *mddev, dev_t dev)
if (!bdev_nowait(rdev->bdev)) {
pr_info("%s: Disabling nowait because %pg does not support nowait\n",
mdname(mddev), rdev->bdev);
- blk_queue_flag_clear(QUEUE_FLAG_NOWAIT, mddev->queue);
+ blk_queue_flag_clear(QUEUE_FLAG_NOWAIT, mddev->gendisk->queue);
}
/*
* Kick recovery, maybe this spare has to be added to the
* array immediately.
*/
set_bit(MD_RECOVERY_NEEDED, &mddev->recovery);
- md_wakeup_thread(mddev->thread);
md_new_event();
return 0;
@@ -7344,8 +7392,7 @@ 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 (test_bit(MD_RECOVERY_RUNNING, &mddev->recovery) ||
- mddev->sync_thread)
+ if (test_bit(MD_RECOVERY_RUNNING, &mddev->recovery))
return -EBUSY;
if (!md_is_rdwr(mddev))
return -EROFS;
@@ -7362,10 +7409,9 @@ static int update_size(struct mddev *mddev, sector_t num_sectors)
if (!rv) {
if (mddev_is_clustered(mddev))
md_cluster_ops->update_size(mddev, old_dev_sectors);
- else if (mddev->queue) {
+ else if (!mddev_is_dm(mddev))
set_capacity_and_notify(mddev->gendisk,
mddev->array_sectors);
- }
}
return rv;
}
@@ -7382,8 +7428,7 @@ 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 ||
- test_bit(MD_RECOVERY_RUNNING, &mddev->recovery) ||
+ if (test_bit(MD_RECOVERY_RUNNING, &mddev->recovery) ||
test_bit(MD_RESYNCING_REMOTE, &mddev->recovery) ||
mddev->reshape_position != MaxSector)
return -EBUSY;
@@ -7579,16 +7624,17 @@ static int md_getgeo(struct block_device *bdev, struct hd_geometry *geo)
return 0;
}
-static inline bool md_ioctl_valid(unsigned int cmd)
+static inline int md_ioctl_valid(unsigned int cmd)
{
switch (cmd) {
- case ADD_NEW_DISK:
case GET_ARRAY_INFO:
- case GET_BITMAP_FILE:
case GET_DISK_INFO:
+ case RAID_VERSION:
+ return 0;
+ case ADD_NEW_DISK:
+ case GET_BITMAP_FILE:
case HOT_ADD_DISK:
case HOT_REMOVE_DISK:
- case RAID_VERSION:
case RESTART_ARRAY_RW:
case RUN_ARRAY:
case SET_ARRAY_INFO:
@@ -7597,9 +7643,11 @@ static inline bool md_ioctl_valid(unsigned int cmd)
case STOP_ARRAY:
case STOP_ARRAY_RO:
case CLUSTERED_DISK_NACK:
- return true;
+ if (!capable(CAP_SYS_ADMIN))
+ return -EACCES;
+ return 0;
default:
- return false;
+ return -ENOTTY;
}
}
@@ -7658,29 +7706,16 @@ static int md_ioctl(struct block_device *bdev, blk_mode_t mode,
void __user *argp = (void __user *)arg;
struct mddev *mddev = NULL;
- if (!md_ioctl_valid(cmd))
- return -ENOTTY;
-
- switch (cmd) {
- case RAID_VERSION:
- case GET_ARRAY_INFO:
- case GET_DISK_INFO:
- break;
- default:
- if (!capable(CAP_SYS_ADMIN))
- return -EACCES;
- }
+ err = md_ioctl_valid(cmd);
+ if (err)
+ return err;
/*
* Commands dealing with the RAID driver but not any
* particular array:
*/
- switch (cmd) {
- case RAID_VERSION:
- err = get_version(argp);
- goto out;
- default:;
- }
+ if (cmd == RAID_VERSION)
+ return get_version(argp);
/*
* Commands creating/starting a new array:
@@ -7688,35 +7723,23 @@ static int md_ioctl(struct block_device *bdev, blk_mode_t mode,
mddev = bdev->bd_disk->private_data;
- if (!mddev) {
- BUG();
- goto out;
- }
-
/* 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 out;
+ return -ENODEV;
+ return get_array_info(mddev, argp);
case GET_DISK_INFO:
if (!mddev->raid_disks && !mddev->external)
- err = -ENODEV;
- else
- err = get_disk_info(mddev, argp);
- goto out;
+ return -ENODEV;
+ return get_disk_info(mddev, argp);
case SET_DISK_FAULTY:
- err = set_disk_faulty(mddev, new_decode_dev(arg));
- goto out;
+ return set_disk_faulty(mddev, new_decode_dev(arg));
case GET_BITMAP_FILE:
- err = get_bitmap_file(mddev, argp);
- goto out;
-
+ return get_bitmap_file(mddev, argp);
}
if (cmd == HOT_REMOVE_DISK)
@@ -7729,19 +7752,9 @@ static int md_ioctl(struct block_device *bdev, blk_mode_t mode,
/* Need to flush page cache, and ensure no-one else opens
* and writes
*/
- mutex_lock(&mddev->open_mutex);
- if (mddev->pers && atomic_read(&mddev->openers) > 1) {
- mutex_unlock(&mddev->open_mutex);
- err = -EBUSY;
- goto out;
- }
- if (test_and_set_bit(MD_CLOSING, &mddev->flags)) {
- mutex_unlock(&mddev->open_mutex);
- err = -EBUSY;
- goto out;
- }
- mutex_unlock(&mddev->open_mutex);
- sync_blockdev(bdev);
+ err = mddev_set_closing_and_sync_blockdev(mddev, 1);
+ if (err)
+ return err;
}
if (!md_is_rdwr(mddev))
@@ -7782,11 +7795,12 @@ 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);
+ if (mddev->pers)
+ err = md_set_readonly(mddev);
goto unlock;
case HOT_REMOVE_DISK:
@@ -8718,10 +8732,7 @@ void md_submit_discard_bio(struct mddev *mddev, struct md_rdev *rdev,
bio_chain(discard_bio, bio);
bio_clone_blkg_association(discard_bio, bio);
- if (mddev->gendisk)
- trace_block_bio_remap(discard_bio,
- disk_devt(mddev->gendisk),
- bio->bi_iter.bi_sector);
+ mddev_trace_remap(mddev, discard_bio, bio->bi_iter.bi_sector);
submit_bio_noacct(discard_bio);
}
EXPORT_SYMBOL_GPL(md_submit_discard_bio);
@@ -9218,7 +9229,7 @@ void md_do_sync(struct md_thread *thread)
mddev->delta_disks > 0 &&
mddev->pers->finish_reshape &&
mddev->pers->size &&
- mddev->queue) {
+ !mddev_is_dm(mddev)) {
mddev_lock_nointr(mddev);
md_set_array_sectors(mddev, mddev->pers->size(mddev, 0, 0));
mddev_unlock(mddev);