@@ -604,7 +604,7 @@ void bd_abort_claiming(struct block_device *bdev, void *holder)
}
EXPORT_SYMBOL(bd_abort_claiming);
-static void bd_end_claim(struct block_device *bdev)
+static void bd_end_claim(struct block_device *bdev, void *holder)
{
struct block_device *whole = bdev_whole(bdev);
bool unblock = false;
@@ -614,6 +614,7 @@ static void bd_end_claim(struct block_device *bdev)
* bdev_lock. open_mutex is used to synchronize disk_holder unlinking.
*/
mutex_lock(&bdev_lock);
+ WARN_ON_ONCE(bdev->bd_holder != holder);
WARN_ON_ONCE(--bdev->bd_holders < 0);
WARN_ON_ONCE(--whole->bd_holders < 0);
if (!bdev->bd_holders) {
@@ -750,10 +751,9 @@ void blkdev_put_no_open(struct block_device *bdev)
* @holder: exclusive holder identifier
* @hops: holder operations
*
- * Open the block device described by device number @dev. If @mode includes
- * %FMODE_EXCL, the block device is opened with exclusive access. Specifying
- * %FMODE_EXCL with a %NULL @holder is invalid. Exclusive opens may nest for
- * the same @holder.
+ * Open the block device described by device number @dev. If @holder is not
+ * %NULL, the block device is opened with exclusive access. Exclusive opens may
+ * nest for the same @holder.
*
* Use this interface ONLY if you really do not have anything better - i.e. when
* you are behind a truly sucky interface and all you are given is a device
@@ -785,10 +785,16 @@ struct block_device *blkdev_get_by_dev(dev_t dev, fmode_t mode, void *holder,
return ERR_PTR(-ENXIO);
disk = bdev->bd_disk;
- if (mode & FMODE_EXCL) {
+ if (holder) {
+ mode |= FMODE_EXCL;
ret = bd_prepare_to_claim(bdev, holder, hops);
if (ret)
goto put_blkdev;
+ } else {
+ if (WARN_ON_ONCE(mode & FMODE_EXCL)) {
+ ret = -EIO;
+ goto put_blkdev;
+ }
}
disk_block_events(disk);
@@ -805,7 +811,7 @@ struct block_device *blkdev_get_by_dev(dev_t dev, fmode_t mode, void *holder,
ret = blkdev_get_whole(bdev, mode);
if (ret)
goto put_module;
- if (mode & FMODE_EXCL) {
+ if (holder) {
bd_finish_claiming(bdev, holder, hops);
/*
@@ -829,7 +835,7 @@ struct block_device *blkdev_get_by_dev(dev_t dev, fmode_t mode, void *holder,
put_module:
module_put(disk->fops->owner);
abort_claiming:
- if (mode & FMODE_EXCL)
+ if (holder)
bd_abort_claiming(bdev, holder);
mutex_unlock(&disk->open_mutex);
disk_unblock_events(disk);
@@ -845,10 +851,9 @@ EXPORT_SYMBOL(blkdev_get_by_dev);
* @mode: FMODE_* mask
* @holder: exclusive holder identifier
*
- * Open the block device described by the device file at @path. If @mode
- * includes %FMODE_EXCL, the block device is opened with exclusive access.
- * Specifying %FMODE_EXCL with a %NULL @holder is invalid. Exclusive opens may
- * nest for the same @holder.
+ * Open the block device described by the device file at @path. If @holder is
+ * not %NULL, the block device is opened with exclusive access. Exclusive opens
+ * may nest for the same @holder.
*
* CONTEXT:
* Might sleep.
@@ -869,7 +874,7 @@ struct block_device *blkdev_get_by_path(const char *path, fmode_t mode,
bdev = blkdev_get_by_dev(dev, mode, holder, hops);
if (!IS_ERR(bdev) && (mode & FMODE_WRITE) && bdev_read_only(bdev)) {
- blkdev_put(bdev, mode);
+ blkdev_put(bdev, holder);
return ERR_PTR(-EACCES);
}
@@ -877,7 +882,7 @@ struct block_device *blkdev_get_by_path(const char *path, fmode_t mode,
}
EXPORT_SYMBOL(blkdev_get_by_path);
-void blkdev_put(struct block_device *bdev, fmode_t mode)
+void blkdev_put(struct block_device *bdev, void *holder)
{
struct gendisk *disk = bdev->bd_disk;
@@ -892,8 +897,8 @@ void blkdev_put(struct block_device *bdev, fmode_t mode)
sync_blockdev(bdev);
mutex_lock(&disk->open_mutex);
- if (mode & FMODE_EXCL)
- bd_end_claim(bdev);
+ if (holder)
+ bd_end_claim(bdev, holder);
/*
* Trigger event checking and tell drivers to flush MEDIA_CHANGE
@@ -490,7 +490,9 @@ static int blkdev_open(struct inode *inode, struct file *filp)
if ((filp->f_flags & O_ACCMODE) == 3)
filp->f_mode |= FMODE_WRITE_IOCTL;
- bdev = blkdev_get_by_dev(inode->i_rdev, filp->f_mode, filp, NULL);
+ bdev = blkdev_get_by_dev(inode->i_rdev, filp->f_mode,
+ (filp->f_mode & FMODE_EXCL) ? filp : NULL,
+ NULL);
if (IS_ERR(bdev))
return PTR_ERR(bdev);
@@ -504,7 +506,7 @@ static int blkdev_release(struct inode *inode, struct file *filp)
{
struct block_device *bdev = filp->private_data;
- blkdev_put(bdev, filp->f_mode);
+ blkdev_put(bdev, (filp->f_mode & FMODE_EXCL) ? filp : NULL);
return 0;
}
@@ -365,12 +365,11 @@ int disk_scan_partitions(struct gendisk *disk, fmode_t mode)
}
set_bit(GD_NEED_PART_SCAN, &disk->state);
- bdev = blkdev_get_by_dev(disk_devt(disk), mode & ~FMODE_EXCL, NULL,
- NULL);
+ bdev = blkdev_get_by_dev(disk_devt(disk), mode, NULL, NULL);
if (IS_ERR(bdev))
ret = PTR_ERR(bdev);
else
- blkdev_put(bdev, mode & ~FMODE_EXCL);
+ blkdev_put(bdev, NULL);
/*
* If blkdev_get_by_dev() failed early, GD_NEED_PART_SCAN is still set,
@@ -454,11 +454,10 @@ static int blkdev_bszset(struct block_device *bdev, fmode_t mode,
if (mode & FMODE_EXCL)
return set_blocksize(bdev, n);
- if (IS_ERR(blkdev_get_by_dev(bdev->bd_dev, mode | FMODE_EXCL, &bdev,
- NULL)))
+ if (IS_ERR(blkdev_get_by_dev(bdev->bd_dev, mode, &bdev, NULL)))
return -EBUSY;
ret = set_blocksize(bdev, n);
- blkdev_put(bdev, mode | FMODE_EXCL);
+ blkdev_put(bdev, &bdev);
return ret;
}
@@ -1640,8 +1640,7 @@ static struct block_device *open_backing_dev(struct drbd_device *device,
struct block_device *bdev;
int err = 0;
- bdev = blkdev_get_by_path(bdev_path,
- FMODE_READ | FMODE_WRITE | FMODE_EXCL,
+ bdev = blkdev_get_by_path(bdev_path, FMODE_READ | FMODE_WRITE,
claim_ptr, NULL);
if (IS_ERR(bdev)) {
drbd_err(device, "open(\"%s\") failed with %ld\n",
@@ -1654,7 +1653,7 @@ static struct block_device *open_backing_dev(struct drbd_device *device,
err = bd_link_disk_holder(bdev, device->vdisk);
if (err) {
- blkdev_put(bdev, FMODE_READ | FMODE_WRITE | FMODE_EXCL);
+ blkdev_put(bdev, claim_ptr);
drbd_err(device, "bd_link_disk_holder(\"%s\", ...) failed with %d\n",
bdev_path, err);
bdev = ERR_PTR(err);
@@ -1696,13 +1695,13 @@ static int open_backing_devices(struct drbd_device *device,
}
static void close_backing_dev(struct drbd_device *device, struct block_device *bdev,
- bool do_bd_unlink)
+ void *claim_ptr, bool do_bd_unlink)
{
if (!bdev)
return;
if (do_bd_unlink)
bd_unlink_disk_holder(bdev, device->vdisk);
- blkdev_put(bdev, FMODE_READ | FMODE_WRITE | FMODE_EXCL);
+ blkdev_put(bdev, claim_ptr);
}
void drbd_backing_dev_free(struct drbd_device *device, struct drbd_backing_dev *ldev)
@@ -1710,8 +1709,11 @@ void drbd_backing_dev_free(struct drbd_device *device, struct drbd_backing_dev *
if (ldev == NULL)
return;
- close_backing_dev(device, ldev->md_bdev, ldev->md_bdev != ldev->backing_bdev);
- close_backing_dev(device, ldev->backing_bdev, true);
+ close_backing_dev(device, ldev->md_bdev,
+ ldev->md.meta_dev_idx < 0 ?
+ (void *)device : (void *)drbd_m_holder,
+ ldev->md_bdev != ldev->backing_bdev);
+ close_backing_dev(device, ldev->backing_bdev, device, true);
kfree(ldev->disk_conf);
kfree(ldev);
@@ -2127,8 +2129,11 @@ int drbd_adm_attach(struct sk_buff *skb, struct genl_info *info)
fail:
conn_reconfig_done(connection);
if (nbc) {
- close_backing_dev(device, nbc->md_bdev, nbc->md_bdev != nbc->backing_bdev);
- close_backing_dev(device, nbc->backing_bdev, true);
+ close_backing_dev(device, nbc->md_bdev,
+ nbc->disk_conf->meta_dev_idx < 0 ?
+ (void *)device : (void *)drbd_m_holder,
+ nbc->md_bdev != nbc->backing_bdev);
+ close_backing_dev(device, nbc->backing_bdev, device, true);
kfree(nbc);
}
kfree(new_disk_conf);
@@ -2167,8 +2167,7 @@ static int pkt_open_dev(struct pktcdvd_device *pd, fmode_t write)
* to read/write from/to it. It is already opened in O_NONBLOCK mode
* so open should not fail.
*/
- bdev = blkdev_get_by_dev(pd->bdev->bd_dev, FMODE_READ | FMODE_EXCL, pd,
- NULL);
+ bdev = blkdev_get_by_dev(pd->bdev->bd_dev, FMODE_READ, pd, NULL);
if (IS_ERR(bdev)) {
ret = PTR_ERR(bdev);
goto out;
@@ -2215,7 +2214,7 @@ static int pkt_open_dev(struct pktcdvd_device *pd, fmode_t write)
return 0;
out_putdev:
- blkdev_put(bdev, FMODE_READ | FMODE_EXCL);
+ blkdev_put(bdev, pd);
out:
return ret;
}
@@ -2234,7 +2233,7 @@ static void pkt_release_dev(struct pktcdvd_device *pd, int flush)
pkt_lock_door(pd, 0);
pkt_set_speed(pd, MAX_SPEED, MAX_SPEED);
- blkdev_put(pd->bdev, FMODE_READ | FMODE_EXCL);
+ blkdev_put(pd->bdev, pd);
pkt_shrink_pktlist(pd);
}
@@ -2520,7 +2519,7 @@ static int pkt_new_dev(struct pktcdvd_device *pd, dev_t dev)
return PTR_ERR(bdev);
sdev = scsi_device_from_queue(bdev->bd_disk->queue);
if (!sdev) {
- blkdev_put(bdev, FMODE_READ | FMODE_NDELAY);
+ blkdev_put(bdev, NULL);
return -EINVAL;
}
put_device(&sdev->sdev_gendev);
@@ -2545,7 +2544,7 @@ static int pkt_new_dev(struct pktcdvd_device *pd, dev_t dev)
return 0;
out_mem:
- blkdev_put(bdev, FMODE_READ | FMODE_NDELAY);
+ blkdev_put(bdev, NULL);
/* This is safe: open() is still holding a reference. */
module_put(THIS_MODULE);
return -ENOMEM;
@@ -2751,7 +2750,7 @@ static int pkt_remove_dev(dev_t pkt_dev)
pkt_debugfs_dev_remove(pd);
pkt_sysfs_dev_remove(pd);
- blkdev_put(pd->bdev, FMODE_READ | FMODE_NDELAY);
+ blkdev_put(pd->bdev, NULL);
remove_proc_entry(pd->disk->disk_name, pkt_proc);
dev_notice(ddev, "writer unmapped\n");
@@ -219,7 +219,7 @@ void rnbd_destroy_sess_dev(struct rnbd_srv_sess_dev *sess_dev, bool keep_id)
rnbd_put_sess_dev(sess_dev);
wait_for_completion(&dc); /* wait for inflights to drop to zero */
- blkdev_put(sess_dev->bdev, sess_dev->open_flags);
+ blkdev_put(sess_dev->bdev, NULL);
mutex_lock(&sess_dev->dev->lock);
list_del(&sess_dev->dev_list);
if (sess_dev->open_flags & FMODE_WRITE)
@@ -795,7 +795,7 @@ static int process_msg_open(struct rnbd_srv_session *srv_sess,
}
rnbd_put_srv_dev(srv_dev);
blkdev_put:
- blkdev_put(bdev, open_flags);
+ blkdev_put(bdev, NULL);
free_path:
kfree(full_path);
reject:
@@ -473,7 +473,7 @@ static void xenvbd_sysfs_delif(struct xenbus_device *dev)
static void xen_vbd_free(struct xen_vbd *vbd)
{
if (vbd->bdev)
- blkdev_put(vbd->bdev, vbd->readonly ? FMODE_READ : FMODE_WRITE);
+ blkdev_put(vbd->bdev, NULL);
vbd->bdev = NULL;
}
@@ -420,7 +420,7 @@ static void reset_bdev(struct zram *zram)
return;
bdev = zram->bdev;
- blkdev_put(bdev, FMODE_READ|FMODE_WRITE|FMODE_EXCL);
+ blkdev_put(bdev, zram);
/* hope filp_close flush all of IO */
filp_close(zram->backing_dev, NULL);
zram->backing_dev = NULL;
@@ -507,8 +507,8 @@ static ssize_t backing_dev_store(struct device *dev,
goto out;
}
- bdev = blkdev_get_by_dev(inode->i_rdev,
- FMODE_READ | FMODE_WRITE | FMODE_EXCL, zram, NULL);
+ bdev = blkdev_get_by_dev(inode->i_rdev, FMODE_READ | FMODE_WRITE, zram,
+ NULL);
if (IS_ERR(bdev)) {
err = PTR_ERR(bdev);
bdev = NULL;
@@ -539,7 +539,7 @@ static ssize_t backing_dev_store(struct device *dev,
kvfree(bitmap);
if (bdev)
- blkdev_put(bdev, FMODE_READ | FMODE_WRITE | FMODE_EXCL);
+ blkdev_put(bdev, zram);
if (backing_dev)
filp_close(backing_dev, NULL);
@@ -1369,7 +1369,7 @@ static void cached_dev_free(struct closure *cl)
put_page(virt_to_page(dc->sb_disk));
if (!IS_ERR_OR_NULL(dc->bdev))
- blkdev_put(dc->bdev, FMODE_READ|FMODE_WRITE|FMODE_EXCL);
+ blkdev_put(dc->bdev, bcache_kobj);
wake_up(&unregister_wait);
@@ -2218,7 +2218,7 @@ void bch_cache_release(struct kobject *kobj)
put_page(virt_to_page(ca->sb_disk));
if (!IS_ERR_OR_NULL(ca->bdev))
- blkdev_put(ca->bdev, FMODE_READ|FMODE_WRITE|FMODE_EXCL);
+ blkdev_put(ca->bdev, bcache_kobj);
kfree(ca);
module_put(THIS_MODULE);
@@ -2359,7 +2359,7 @@ static int register_cache(struct cache_sb *sb, struct cache_sb_disk *sb_disk,
* call blkdev_put() to bdev in bch_cache_release(). So we
* explicitly call blkdev_put() here.
*/
- blkdev_put(bdev, FMODE_READ|FMODE_WRITE|FMODE_EXCL);
+ blkdev_put(bdev, bcache_kobj);
if (ret == -ENOMEM)
err = "cache_alloc(): -ENOMEM";
else if (ret == -EPERM)
@@ -2461,7 +2461,7 @@ static void register_bdev_worker(struct work_struct *work)
if (!dc) {
fail = true;
put_page(virt_to_page(args->sb_disk));
- blkdev_put(args->bdev, FMODE_READ | FMODE_WRITE | FMODE_EXCL);
+ blkdev_put(args->bdev, bcache_kobj);
goto out;
}
@@ -2491,7 +2491,7 @@ static void register_cache_worker(struct work_struct *work)
if (!ca) {
fail = true;
put_page(virt_to_page(args->sb_disk));
- blkdev_put(args->bdev, FMODE_READ | FMODE_WRITE | FMODE_EXCL);
+ blkdev_put(args->bdev, bcache_kobj);
goto out;
}
@@ -2558,8 +2558,7 @@ static ssize_t register_bcache(struct kobject *k, struct kobj_attribute *attr,
ret = -EINVAL;
err = "failed to open device";
- bdev = blkdev_get_by_path(strim(path),
- FMODE_READ|FMODE_WRITE|FMODE_EXCL,
+ bdev = blkdev_get_by_path(strim(path), FMODE_READ | FMODE_WRITE,
bcache_kobj, NULL);
if (IS_ERR(bdev)) {
if (bdev == ERR_PTR(-EBUSY)) {
@@ -2648,7 +2647,7 @@ static ssize_t register_bcache(struct kobject *k, struct kobj_attribute *attr,
out_put_sb_page:
put_page(virt_to_page(sb_disk));
out_blkdev_put:
- blkdev_put(bdev, FMODE_READ | FMODE_WRITE | FMODE_EXCL);
+ blkdev_put(bdev, register_bcache);
out_free_sb:
kfree(sb);
out_free_path:
@@ -746,7 +746,7 @@ static struct table_device *open_table_device(struct mapped_device *md,
return ERR_PTR(-ENOMEM);
refcount_set(&td->count, 1);
- bdev = blkdev_get_by_dev(dev, mode | FMODE_EXCL, _dm_claim_ptr, NULL);
+ bdev = blkdev_get_by_dev(dev, mode, _dm_claim_ptr, NULL);
if (IS_ERR(bdev)) {
r = PTR_ERR(bdev);
goto out_free_td;
@@ -771,7 +771,7 @@ static struct table_device *open_table_device(struct mapped_device *md,
return td;
out_blkdev_put:
- blkdev_put(bdev, mode | FMODE_EXCL);
+ blkdev_put(bdev, _dm_claim_ptr);
out_free_td:
kfree(td);
return ERR_PTR(r);
@@ -784,7 +784,7 @@ static void close_table_device(struct table_device *td, struct mapped_device *md
{
if (md->disk->slave_dir)
bd_unlink_disk_holder(td->dm_dev.bdev, md->disk);
- blkdev_put(td->dm_dev.bdev, td->dm_dev.mode | FMODE_EXCL);
+ blkdev_put(td->dm_dev.bdev, _dm_claim_ptr);
put_dax(td->dm_dev.dax_dev);
list_del(&td->list);
kfree(td);
@@ -2449,7 +2449,10 @@ static void rdev_delayed_delete(struct work_struct *ws)
void md_autodetect_dev(dev_t dev);
-static void export_rdev(struct md_rdev *rdev)
+/* just for claiming the bdev */
+static struct md_rdev claim_rdev;
+
+static void export_rdev(struct md_rdev *rdev, struct mddev *mddev)
{
pr_debug("md: export_rdev(%pg)\n", rdev->bdev);
md_rdev_clear(rdev);
@@ -2457,7 +2460,7 @@ static void export_rdev(struct md_rdev *rdev)
if (test_bit(AutoDetected, &rdev->flags))
md_autodetect_dev(rdev->bdev->bd_dev);
#endif
- blkdev_put(rdev->bdev, FMODE_READ | FMODE_WRITE | FMODE_EXCL);
+ blkdev_put(rdev->bdev, mddev->major_version == -2 ? &claim_rdev : rdev);
rdev->bdev = NULL;
kobject_put(&rdev->kobj);
}
@@ -2485,7 +2488,7 @@ static void md_kick_rdev_from_array(struct md_rdev *rdev)
INIT_WORK(&rdev->del_work, rdev_delayed_delete);
kobject_get(&rdev->kobj);
queue_work(md_rdev_misc_wq, &rdev->del_work);
- export_rdev(rdev);
+ export_rdev(rdev, rdev->mddev);
}
static void export_array(struct mddev *mddev)
@@ -3612,6 +3615,7 @@ int md_rdev_init(struct md_rdev *rdev)
return badblocks_init(&rdev->badblocks, 0);
}
EXPORT_SYMBOL_GPL(md_rdev_init);
+
/*
* Import a device. If 'super_format' >= 0, then sanity check the superblock
*
@@ -3624,7 +3628,6 @@ EXPORT_SYMBOL_GPL(md_rdev_init);
*/
static struct md_rdev *md_import_device(dev_t newdev, int super_format, int super_minor)
{
- static struct md_rdev claim_rdev; /* just for claiming the bdev */
struct md_rdev *rdev;
sector_t size;
int err;
@@ -3640,8 +3643,7 @@ static struct md_rdev *md_import_device(dev_t newdev, int super_format, int supe
if (err)
goto out_clear_rdev;
- rdev->bdev = blkdev_get_by_dev(newdev,
- FMODE_READ | FMODE_WRITE | FMODE_EXCL,
+ rdev->bdev = blkdev_get_by_dev(newdev, FMODE_READ | FMODE_WRITE,
super_format == -2 ? &claim_rdev : rdev, NULL);
if (IS_ERR(rdev->bdev)) {
pr_warn("md: could not open device unknown-block(%u,%u).\n",
@@ -3679,7 +3681,7 @@ static struct md_rdev *md_import_device(dev_t newdev, int super_format, int supe
return rdev;
out_blkdev_put:
- blkdev_put(rdev->bdev, FMODE_READ | FMODE_WRITE | FMODE_EXCL);
+ blkdev_put(rdev->bdev, super_format == -2 ? &claim_rdev : rdev);
out_clear_rdev:
md_rdev_clear(rdev);
out_free_rdev:
@@ -4560,7 +4562,7 @@ new_dev_store(struct mddev *mddev, const char *buf, size_t len)
err = bind_rdev_to_array(rdev, mddev);
out:
if (err)
- export_rdev(rdev);
+ export_rdev(rdev, mddev);
mddev_unlock(mddev);
if (!err)
md_new_event();
@@ -6498,7 +6500,7 @@ static void autorun_devices(int part)
rdev_for_each_list(rdev, tmp, &candidates) {
list_del_init(&rdev->same_set);
if (bind_rdev_to_array(rdev, mddev))
- export_rdev(rdev);
+ export_rdev(rdev, mddev);
}
autorun_array(mddev);
mddev_unlock(mddev);
@@ -6508,7 +6510,7 @@ static void autorun_devices(int part)
*/
rdev_for_each_list(rdev, tmp, &candidates) {
list_del_init(&rdev->same_set);
- export_rdev(rdev);
+ export_rdev(rdev, mddev);
}
mddev_put(mddev);
}
@@ -6696,13 +6698,13 @@ int md_add_new_disk(struct mddev *mddev, struct mdu_disk_info_s *info)
pr_warn("md: %pg has different UUID to %pg\n",
rdev->bdev,
rdev0->bdev);
- export_rdev(rdev);
+ export_rdev(rdev, mddev);
return -EINVAL;
}
}
err = bind_rdev_to_array(rdev, mddev);
if (err)
- export_rdev(rdev);
+ export_rdev(rdev, mddev);
return err;
}
@@ -6746,7 +6748,7 @@ int md_add_new_disk(struct mddev *mddev, struct mdu_disk_info_s *info)
/* This was a hot-add request, but events doesn't
* match, so reject it.
*/
- export_rdev(rdev);
+ export_rdev(rdev, mddev);
return -EINVAL;
}
@@ -6772,7 +6774,7 @@ int md_add_new_disk(struct mddev *mddev, struct mdu_disk_info_s *info)
}
}
if (has_journal || mddev->bitmap) {
- export_rdev(rdev);
+ export_rdev(rdev, mddev);
return -EBUSY;
}
set_bit(Journal, &rdev->flags);
@@ -6787,7 +6789,7 @@ int md_add_new_disk(struct mddev *mddev, struct mdu_disk_info_s *info)
/* --add initiated by this node */
err = md_cluster_ops->add_new_disk(mddev, rdev);
if (err) {
- export_rdev(rdev);
+ export_rdev(rdev, mddev);
return err;
}
}
@@ -6797,7 +6799,7 @@ int md_add_new_disk(struct mddev *mddev, struct mdu_disk_info_s *info)
err = bind_rdev_to_array(rdev, mddev);
if (err)
- export_rdev(rdev);
+ export_rdev(rdev, mddev);
if (mddev_is_clustered(mddev)) {
if (info->state & (1 << MD_DISK_CANDIDATE)) {
@@ -6860,7 +6862,7 @@ int md_add_new_disk(struct mddev *mddev, struct mdu_disk_info_s *info)
err = bind_rdev_to_array(rdev, mddev);
if (err) {
- export_rdev(rdev);
+ export_rdev(rdev, mddev);
return err;
}
}
@@ -6985,7 +6987,7 @@ static int hot_add_disk(struct mddev *mddev, dev_t dev)
return 0;
abort_export:
- export_rdev(rdev);
+ export_rdev(rdev, mddev);
return err;
}
@@ -209,7 +209,7 @@ static void block2mtd_free_device(struct block2mtd_dev *dev)
if (dev->blkdev) {
invalidate_mapping_pages(dev->blkdev->bd_inode->i_mapping,
0, -1);
- blkdev_put(dev->blkdev, FMODE_READ|FMODE_WRITE|FMODE_EXCL);
+ blkdev_put(dev->blkdev, NULL);
}
kfree(dev);
@@ -261,7 +261,7 @@ static struct block_device __ref *mdtblock_early_get_bdev(const char *devname,
static struct block2mtd_dev *add_device(char *devname, int erase_size,
char *label, int timeout)
{
- const fmode_t mode = FMODE_READ | FMODE_WRITE | FMODE_EXCL;
+ const fmode_t mode = FMODE_READ | FMODE_WRITE;
struct block_device *bdev;
struct block2mtd_dev *dev;
char *name;
@@ -51,7 +51,7 @@ void nvmet_bdev_set_limits(struct block_device *bdev, struct nvme_id_ns *id)
void nvmet_bdev_ns_disable(struct nvmet_ns *ns)
{
if (ns->bdev) {
- blkdev_put(ns->bdev, FMODE_WRITE | FMODE_READ);
+ blkdev_put(ns->bdev, NULL);
ns->bdev = NULL;
}
}
@@ -179,7 +179,7 @@ void dasd_destroy_partitions(struct dasd_block *block)
mutex_unlock(&bdev->bd_disk->open_mutex);
/* Matching blkdev_put to the blkdev_get in dasd_scan_partitions. */
- blkdev_put(bdev, FMODE_READ);
+ blkdev_put(bdev, NULL);
}
int dasd_gendisk_init(void)
@@ -108,7 +108,7 @@ static int iblock_configure_device(struct se_device *dev)
pr_debug( "IBLOCK: Claiming struct block_device: %s\n",
ib_dev->ibd_udev_path);
- mode = FMODE_READ|FMODE_EXCL;
+ mode = FMODE_READ;
if (!ib_dev->ibd_readonly)
mode |= FMODE_WRITE;
else
@@ -175,7 +175,7 @@ static int iblock_configure_device(struct se_device *dev)
return 0;
out_blkdev_put:
- blkdev_put(ib_dev->ibd_bd, FMODE_WRITE|FMODE_READ|FMODE_EXCL);
+ blkdev_put(ib_dev->ibd_bd, ib_dev);
out_free_bioset:
bioset_exit(&ib_dev->ibd_bio_set);
out:
@@ -201,7 +201,7 @@ static void iblock_destroy_device(struct se_device *dev)
struct iblock_dev *ib_dev = IBLOCK_DEV(dev);
if (ib_dev->ibd_bd != NULL)
- blkdev_put(ib_dev->ibd_bd, FMODE_WRITE|FMODE_READ|FMODE_EXCL);
+ blkdev_put(ib_dev->ibd_bd, ib_dev);
bioset_exit(&ib_dev->ibd_bio_set);
}
@@ -366,8 +366,7 @@ static int pscsi_create_type_disk(struct se_device *dev, struct scsi_device *sd)
* Claim exclusive struct block_device access to struct scsi_device
* for TYPE_DISK and TYPE_ZBC using supplied udev_path
*/
- bd = blkdev_get_by_path(dev->udev_path,
- FMODE_WRITE|FMODE_READ|FMODE_EXCL, pdv,
+ bd = blkdev_get_by_path(dev->udev_path, FMODE_WRITE | FMODE_READ, pdv,
NULL);
if (IS_ERR(bd)) {
pr_err("pSCSI: blkdev_get_by_path() failed\n");
@@ -378,7 +377,7 @@ static int pscsi_create_type_disk(struct se_device *dev, struct scsi_device *sd)
ret = pscsi_add_device_to_list(dev, sd);
if (ret) {
- blkdev_put(pdv->pdv_bd, FMODE_WRITE|FMODE_READ|FMODE_EXCL);
+ blkdev_put(pdv->pdv_bd, pdv);
scsi_device_put(sd);
return ret;
}
@@ -566,8 +565,7 @@ static void pscsi_destroy_device(struct se_device *dev)
*/
if ((sd->type == TYPE_DISK || sd->type == TYPE_ZBC) &&
pdv->pdv_bd) {
- blkdev_put(pdv->pdv_bd,
- FMODE_WRITE|FMODE_READ|FMODE_EXCL);
+ blkdev_put(pdv->pdv_bd, pdv);
pdv->pdv_bd = NULL;
}
/*
@@ -257,7 +257,7 @@ static int btrfs_init_dev_replace_tgtdev(struct btrfs_fs_info *fs_info,
return -EINVAL;
}
- bdev = blkdev_get_by_path(device_path, FMODE_WRITE | FMODE_EXCL,
+ bdev = blkdev_get_by_path(device_path, FMODE_WRITE,
fs_info->bdev_holder, NULL);
if (IS_ERR(bdev)) {
btrfs_err(fs_info, "target device %s is invalid!", device_path);
@@ -315,7 +315,7 @@ static int btrfs_init_dev_replace_tgtdev(struct btrfs_fs_info *fs_info,
device->bdev = bdev;
set_bit(BTRFS_DEV_STATE_IN_FS_METADATA, &device->dev_state);
set_bit(BTRFS_DEV_STATE_REPLACE_TGT, &device->dev_state);
- device->mode = FMODE_EXCL;
+ device->holder = fs_info->bdev_holder;
device->dev_stats_valid = 1;
set_blocksize(device->bdev, BTRFS_BDEV_BLOCKSIZE);
device->fs_devices = fs_devices;
@@ -334,7 +334,7 @@ static int btrfs_init_dev_replace_tgtdev(struct btrfs_fs_info *fs_info,
return 0;
error:
- blkdev_put(bdev, FMODE_EXCL);
+ blkdev_put(bdev, fs_info->bdev_holder);
return ret;
}
@@ -2672,7 +2672,7 @@ static long btrfs_ioctl_rm_dev_v2(struct file *file, void __user *arg)
struct btrfs_fs_info *fs_info = btrfs_sb(inode->i_sb);
struct btrfs_ioctl_vol_args_v2 *vol_args;
struct block_device *bdev = NULL;
- fmode_t mode;
+ void *holder;
int ret;
bool cancel = false;
@@ -2709,7 +2709,7 @@ static long btrfs_ioctl_rm_dev_v2(struct file *file, void __user *arg)
goto err_drop;
/* Exclusive operation is now claimed */
- ret = btrfs_rm_device(fs_info, &args, &bdev, &mode);
+ ret = btrfs_rm_device(fs_info, &args, &bdev, &holder);
btrfs_exclop_finish(fs_info);
@@ -2724,7 +2724,7 @@ static long btrfs_ioctl_rm_dev_v2(struct file *file, void __user *arg)
err_drop:
mnt_drop_write_file(file);
if (bdev)
- blkdev_put(bdev, mode);
+ blkdev_put(bdev, holder);
out:
btrfs_put_dev_args_from_path(&args);
kfree(vol_args);
@@ -2738,7 +2738,7 @@ static long btrfs_ioctl_rm_dev(struct file *file, void __user *arg)
struct btrfs_fs_info *fs_info = btrfs_sb(inode->i_sb);
struct btrfs_ioctl_vol_args *vol_args;
struct block_device *bdev = NULL;
- fmode_t mode;
+ void *holder;
int ret;
bool cancel = false;
@@ -2765,7 +2765,7 @@ static long btrfs_ioctl_rm_dev(struct file *file, void __user *arg)
ret = exclop_start_or_cancel_reloc(fs_info, BTRFS_EXCLOP_DEV_REMOVE,
cancel);
if (ret == 0) {
- ret = btrfs_rm_device(fs_info, &args, &bdev, &mode);
+ ret = btrfs_rm_device(fs_info, &args, &bdev, &holder);
if (!ret)
btrfs_info(fs_info, "disk deleted %s", vol_args->name);
btrfs_exclop_finish(fs_info);
@@ -2773,7 +2773,7 @@ static long btrfs_ioctl_rm_dev(struct file *file, void __user *arg)
mnt_drop_write_file(file);
if (bdev)
- blkdev_put(bdev, mode);
+ blkdev_put(bdev, holder);
out:
btrfs_put_dev_args_from_path(&args);
kfree(vol_args);
@@ -507,14 +507,14 @@ btrfs_get_bdev_and_sb(const char *device_path, fmode_t flags, void *holder,
sync_blockdev(*bdev);
ret = set_blocksize(*bdev, BTRFS_BDEV_BLOCKSIZE);
if (ret) {
- blkdev_put(*bdev, flags);
+ blkdev_put(*bdev, holder);
goto error;
}
invalidate_bdev(*bdev);
*disk_super = btrfs_read_dev_super(*bdev);
if (IS_ERR(*disk_super)) {
ret = PTR_ERR(*disk_super);
- blkdev_put(*bdev, flags);
+ blkdev_put(*bdev, holder);
goto error;
}
@@ -642,7 +642,7 @@ static int btrfs_open_one_device(struct btrfs_fs_devices *fs_devices,
device->bdev = bdev;
clear_bit(BTRFS_DEV_STATE_IN_FS_METADATA, &device->dev_state);
- device->mode = flags;
+ device->holder = holder;
fs_devices->open_devices++;
if (test_bit(BTRFS_DEV_STATE_WRITEABLE, &device->dev_state) &&
@@ -656,7 +656,7 @@ static int btrfs_open_one_device(struct btrfs_fs_devices *fs_devices,
error_free_page:
btrfs_release_disk_super(disk_super);
- blkdev_put(bdev, flags);
+ blkdev_put(bdev, holder);
return -EINVAL;
}
@@ -1057,7 +1057,7 @@ static void __btrfs_free_extra_devids(struct btrfs_fs_devices *fs_devices,
continue;
if (device->bdev) {
- blkdev_put(device->bdev, device->mode);
+ blkdev_put(device->bdev, device->holder);
device->bdev = NULL;
fs_devices->open_devices--;
}
@@ -1103,7 +1103,7 @@ static void btrfs_close_bdev(struct btrfs_device *device)
invalidate_bdev(device->bdev);
}
- blkdev_put(device->bdev, device->mode);
+ blkdev_put(device->bdev, device->holder);
}
static void btrfs_close_one_device(struct btrfs_device *device)
@@ -1213,8 +1213,6 @@ static int open_fs_devices(struct btrfs_fs_devices *fs_devices,
struct btrfs_device *latest_dev = NULL;
struct btrfs_device *tmp_device;
- flags |= FMODE_EXCL;
-
list_for_each_entry_safe(device, tmp_device, &fs_devices->devices,
dev_list) {
int ret;
@@ -1400,7 +1398,7 @@ struct btrfs_device *btrfs_scan_one_device(const char *path, fmode_t flags)
btrfs_release_disk_super(disk_super);
error_bdev_put:
- blkdev_put(bdev, flags);
+ blkdev_put(bdev, NULL);
return device;
}
@@ -2087,7 +2085,7 @@ void btrfs_scratch_superblocks(struct btrfs_fs_info *fs_info,
int btrfs_rm_device(struct btrfs_fs_info *fs_info,
struct btrfs_dev_lookup_args *args,
- struct block_device **bdev, fmode_t *mode)
+ struct block_device **bdev, void **holder)
{
struct btrfs_trans_handle *trans;
struct btrfs_device *device;
@@ -2226,7 +2224,7 @@ int btrfs_rm_device(struct btrfs_fs_info *fs_info,
}
*bdev = device->bdev;
- *mode = device->mode;
+ *holder = device->holder;
synchronize_rcu();
btrfs_free_device(device);
@@ -2394,7 +2392,7 @@ int btrfs_get_dev_args_from_path(struct btrfs_fs_info *fs_info,
else
memcpy(args->fsid, disk_super->fsid, BTRFS_FSID_SIZE);
btrfs_release_disk_super(disk_super);
- blkdev_put(bdev, FMODE_READ);
+ blkdev_put(bdev, NULL);
return 0;
}
@@ -2627,7 +2625,7 @@ int btrfs_init_new_device(struct btrfs_fs_info *fs_info, const char *device_path
if (sb_rdonly(sb) && !fs_devices->seeding)
return -EROFS;
- bdev = blkdev_get_by_path(device_path, FMODE_WRITE | FMODE_EXCL,
+ bdev = blkdev_get_by_path(device_path, FMODE_WRITE,
fs_info->bdev_holder, NULL);
if (IS_ERR(bdev))
return PTR_ERR(bdev);
@@ -2690,7 +2688,7 @@ int btrfs_init_new_device(struct btrfs_fs_info *fs_info, const char *device_path
device->commit_total_bytes = device->total_bytes;
set_bit(BTRFS_DEV_STATE_IN_FS_METADATA, &device->dev_state);
clear_bit(BTRFS_DEV_STATE_REPLACE_TGT, &device->dev_state);
- device->mode = FMODE_EXCL;
+ device->holder = fs_info->bdev_holder;
device->dev_stats_valid = 1;
set_blocksize(device->bdev, BTRFS_BDEV_BLOCKSIZE);
@@ -2848,7 +2846,7 @@ int btrfs_init_new_device(struct btrfs_fs_info *fs_info, const char *device_path
error_free_device:
btrfs_free_device(device);
error:
- blkdev_put(bdev, FMODE_EXCL);
+ blkdev_put(bdev, fs_info->bdev_holder);
if (locked) {
mutex_unlock(&uuid_mutex);
up_write(&sb->s_umount);
@@ -94,8 +94,8 @@ struct btrfs_device {
struct btrfs_zoned_device_info *zone_info;
- /* the mode sent to blkdev_get */
- fmode_t mode;
+ /* block device holder for blkdev_get/put */
+ void *holder;
/*
* Device's major-minor number. Must be set even if the device is not
@@ -619,7 +619,7 @@ void btrfs_put_dev_args_from_path(struct btrfs_dev_lookup_args *args);
void btrfs_free_device(struct btrfs_device *device);
int btrfs_rm_device(struct btrfs_fs_info *fs_info,
struct btrfs_dev_lookup_args *args,
- struct block_device **bdev, fmode_t *mode);
+ struct block_device **bdev, void **holder);
void __exit btrfs_cleanup_fs_uuids(void);
int btrfs_num_copies(struct btrfs_fs_info *fs_info, u64 logical, u64 len);
int btrfs_grow_device(struct btrfs_trans_handle *trans,
@@ -19,6 +19,7 @@
#include <trace/events/erofs.h>
static struct kmem_cache *erofs_inode_cachep __read_mostly;
+struct file_system_type erofs_fs_type;
void _erofs_err(struct super_block *sb, const char *function,
const char *fmt, ...)
@@ -253,8 +254,8 @@ static int erofs_init_device(struct erofs_buf *buf, struct super_block *sb,
return PTR_ERR(fscache);
dif->fscache = fscache;
} else if (!sbi->devs->flatdev) {
- bdev = blkdev_get_by_path(dif->path, FMODE_READ | FMODE_EXCL,
- sb->s_type, NULL);
+ bdev = blkdev_get_by_path(dif->path, FMODE_READ, sb->s_type,
+ NULL);
if (IS_ERR(bdev))
return PTR_ERR(bdev);
dif->bdev = bdev;
@@ -877,7 +878,7 @@ static int erofs_release_device_info(int id, void *ptr, void *data)
fs_put_dax(dif->dax_dev, NULL);
if (dif->bdev)
- blkdev_put(dif->bdev, FMODE_READ | FMODE_EXCL);
+ blkdev_put(dif->bdev, &erofs_fs_type);
erofs_fscache_unregister_cookie(dif->fscache);
dif->fscache = NULL;
kfree(dif->path);
@@ -1112,7 +1112,7 @@ static struct block_device *ext4_blkdev_get(dev_t dev, struct super_block *sb)
{
struct block_device *bdev;
- bdev = blkdev_get_by_dev(dev, FMODE_READ|FMODE_WRITE|FMODE_EXCL, sb,
+ bdev = blkdev_get_by_dev(dev, FMODE_READ | FMODE_WRITE, sb,
&ext4_holder_ops);
if (IS_ERR(bdev))
goto fail;
@@ -1128,17 +1128,12 @@ static struct block_device *ext4_blkdev_get(dev_t dev, struct super_block *sb)
/*
* Release the journal device
*/
-static void ext4_blkdev_put(struct block_device *bdev)
-{
- blkdev_put(bdev, FMODE_READ|FMODE_WRITE|FMODE_EXCL);
-}
-
static void ext4_blkdev_remove(struct ext4_sb_info *sbi)
{
struct block_device *bdev;
bdev = sbi->s_journal_bdev;
if (bdev) {
- ext4_blkdev_put(bdev);
+ blkdev_put(bdev, sbi->s_es);
sbi->s_journal_bdev = NULL;
}
}
@@ -5915,7 +5910,7 @@ static journal_t *ext4_get_dev_journal(struct super_block *sb,
out_journal:
jbd2_journal_destroy(journal);
out_bdev:
- ext4_blkdev_put(bdev);
+ blkdev_put(bdev, sb);
return NULL;
}
@@ -1538,7 +1538,7 @@ static void destroy_device_list(struct f2fs_sb_info *sbi)
int i;
for (i = 0; i < sbi->s_ndevs; i++) {
- blkdev_put(FDEV(i).bdev, FMODE_EXCL);
+ blkdev_put(FDEV(i).bdev, sbi->sb->s_type);
#ifdef CONFIG_BLK_DEV_ZONED
kvfree(FDEV(i).blkz_seq);
#endif
@@ -1100,7 +1100,7 @@ int lmLogOpen(struct super_block *sb)
* file systems to log may have n-to-1 relationship;
*/
- bdev = blkdev_get_by_dev(sbi->logdev, FMODE_READ|FMODE_WRITE|FMODE_EXCL,
+ bdev = blkdev_get_by_dev(sbi->logdev, FMODE_READ | FMODE_WRITE,
log, NULL);
if (IS_ERR(bdev)) {
rc = PTR_ERR(bdev);
@@ -1141,7 +1141,7 @@ int lmLogOpen(struct super_block *sb)
lbmLogShutdown(log);
close: /* close external log device */
- blkdev_put(bdev, FMODE_READ|FMODE_WRITE|FMODE_EXCL);
+ blkdev_put(bdev, log);
free: /* free log descriptor */
mutex_unlock(&jfs_log_mutex);
@@ -1485,7 +1485,7 @@ int lmLogClose(struct super_block *sb)
bdev = log->bdev;
rc = lmLogShutdown(log);
- blkdev_put(bdev, FMODE_READ|FMODE_WRITE|FMODE_EXCL);
+ blkdev_put(bdev, log);
kfree(log);
@@ -35,7 +35,7 @@ bl_free_device(struct pnfs_block_dev *dev)
}
if (dev->bdev)
- blkdev_put(dev->bdev, FMODE_READ | FMODE_WRITE);
+ blkdev_put(dev->bdev, NULL);
}
}
@@ -374,7 +374,7 @@ bl_parse_scsi(struct nfs_server *server, struct pnfs_block_dev *d,
return 0;
out_blkdev_put:
- blkdev_put(d->bdev, FMODE_READ | FMODE_WRITE);
+ blkdev_put(d->bdev, NULL);
return error;
}
@@ -1278,7 +1278,7 @@ nilfs_mount(struct file_system_type *fs_type, int flags,
{
struct nilfs_super_data sd;
struct super_block *s;
- fmode_t mode = FMODE_READ | FMODE_EXCL;
+ fmode_t mode = FMODE_READ;
struct dentry *root_dentry;
int err, s_new = false;
@@ -1357,7 +1357,7 @@ nilfs_mount(struct file_system_type *fs_type, int flags,
}
if (!s_new)
- blkdev_put(sd.bdev, mode);
+ blkdev_put(sd.bdev, fs_type);
return root_dentry;
@@ -1366,7 +1366,7 @@ nilfs_mount(struct file_system_type *fs_type, int flags,
failed:
if (!s_new)
- blkdev_put(sd.bdev, mode);
+ blkdev_put(sd.bdev, fs_type);
return ERR_PTR(err);
}
@@ -1503,7 +1503,7 @@ static void o2hb_region_release(struct config_item *item)
}
if (reg->hr_bdev)
- blkdev_put(reg->hr_bdev, FMODE_READ|FMODE_WRITE);
+ blkdev_put(reg->hr_bdev, NULL);
kfree(reg->hr_slots);
@@ -1893,7 +1893,7 @@ static ssize_t o2hb_region_dev_store(struct config_item *item,
out3:
if (ret < 0) {
- blkdev_put(reg->hr_bdev, FMODE_READ | FMODE_WRITE);
+ blkdev_put(reg->hr_bdev, NULL);
reg->hr_bdev = NULL;
}
out2:
@@ -2589,7 +2589,7 @@ static void release_journal_dev(struct super_block *super,
struct reiserfs_journal *journal)
{
if (journal->j_dev_bd != NULL) {
- blkdev_put(journal->j_dev_bd, journal->j_dev_mode);
+ blkdev_put(journal->j_dev_bd, journal);
journal->j_dev_bd = NULL;
}
}
@@ -2598,9 +2598,10 @@ static int journal_init_dev(struct super_block *super,
struct reiserfs_journal *journal,
const char *jdev_name)
{
+ fmode_t blkdev_mode = FMODE_READ;
+ void *holder = journal;
int result;
dev_t jdev;
- fmode_t blkdev_mode = FMODE_READ | FMODE_WRITE | FMODE_EXCL;
result = 0;
@@ -2608,16 +2609,15 @@ static int journal_init_dev(struct super_block *super,
jdev = SB_ONDISK_JOURNAL_DEVICE(super) ?
new_decode_dev(SB_ONDISK_JOURNAL_DEVICE(super)) : super->s_dev;
- if (bdev_read_only(super->s_bdev))
- blkdev_mode = FMODE_READ;
+ if (!bdev_read_only(super->s_bdev))
+ blkdev_mode |= FMODE_WRITE;
/* there is no "jdev" option and journal is on separate device */
if ((!jdev_name || !jdev_name[0])) {
if (jdev == super->s_dev)
- blkdev_mode &= ~FMODE_EXCL;
- journal->j_dev_bd = blkdev_get_by_dev(jdev, blkdev_mode,
- journal, NULL);
- journal->j_dev_mode = blkdev_mode;
+ holder = NULL;
+ journal->j_dev_bd = blkdev_get_by_dev(jdev, blkdev_mode, holder,
+ NULL);
if (IS_ERR(journal->j_dev_bd)) {
result = PTR_ERR(journal->j_dev_bd);
journal->j_dev_bd = NULL;
@@ -2631,8 +2631,7 @@ static int journal_init_dev(struct super_block *super,
return 0;
}
- journal->j_dev_mode = blkdev_mode;
- journal->j_dev_bd = blkdev_get_by_path(jdev_name, blkdev_mode, journal,
+ journal->j_dev_bd = blkdev_get_by_path(jdev_name, blkdev_mode, holder,
NULL);
if (IS_ERR(journal->j_dev_bd)) {
result = PTR_ERR(journal->j_dev_bd);
@@ -300,7 +300,6 @@ struct reiserfs_journal {
struct reiserfs_journal_cnode *j_first;
struct block_device *j_dev_bd;
- fmode_t j_dev_mode;
/* first block on s_dev of reserved area journal */
int j_1st_reserved_block;
@@ -1255,7 +1255,7 @@ int get_tree_bdev(struct fs_context *fc,
{
struct block_device *bdev;
struct super_block *s;
- fmode_t mode = FMODE_READ | FMODE_EXCL;
+ fmode_t mode = FMODE_READ;
int error = 0;
if (!(fc->sb_flags & SB_RDONLY))
@@ -1279,7 +1279,7 @@ int get_tree_bdev(struct fs_context *fc,
if (bdev->bd_fsfreeze_count > 0) {
mutex_unlock(&bdev->bd_fsfreeze_mutex);
warnf(fc, "%pg: Can't mount, blockdev is frozen", bdev);
- blkdev_put(bdev, mode);
+ blkdev_put(bdev, fc->fs_type);
return -EBUSY;
}
@@ -1288,7 +1288,7 @@ int get_tree_bdev(struct fs_context *fc,
s = sget_fc(fc, test_bdev_super_fc, set_bdev_super_fc);
mutex_unlock(&bdev->bd_fsfreeze_mutex);
if (IS_ERR(s)) {
- blkdev_put(bdev, mode);
+ blkdev_put(bdev, fc->fs_type);
return PTR_ERR(s);
}
@@ -1297,7 +1297,7 @@ int get_tree_bdev(struct fs_context *fc,
if ((fc->sb_flags ^ s->s_flags) & SB_RDONLY) {
warnf(fc, "%pg: Can't mount, would change RO state", bdev);
deactivate_locked_super(s);
- blkdev_put(bdev, mode);
+ blkdev_put(bdev, fc->fs_type);
return -EBUSY;
}
@@ -1309,7 +1309,7 @@ int get_tree_bdev(struct fs_context *fc,
* holding an active reference.
*/
up_write(&s->s_umount);
- blkdev_put(bdev, mode);
+ blkdev_put(bdev, fc->fs_type);
down_write(&s->s_umount);
} else {
s->s_mode = mode;
@@ -1344,7 +1344,7 @@ struct dentry *mount_bdev(struct file_system_type *fs_type,
{
struct block_device *bdev;
struct super_block *s;
- fmode_t mode = FMODE_READ | FMODE_EXCL;
+ fmode_t mode = FMODE_READ;
int error = 0;
if (!(flags & SB_RDONLY))
@@ -1386,7 +1386,7 @@ struct dentry *mount_bdev(struct file_system_type *fs_type,
* holding an active reference.
*/
up_write(&s->s_umount);
- blkdev_put(bdev, mode);
+ blkdev_put(bdev, fs_type);
down_write(&s->s_umount);
} else {
s->s_mode = mode;
@@ -1409,7 +1409,7 @@ struct dentry *mount_bdev(struct file_system_type *fs_type,
error_s:
error = PTR_ERR(s);
error_bdev:
- blkdev_put(bdev, mode);
+ blkdev_put(bdev, fs_type);
error:
return ERR_PTR(error);
}
@@ -1418,13 +1418,11 @@ EXPORT_SYMBOL(mount_bdev);
void kill_block_super(struct super_block *sb)
{
struct block_device *bdev = sb->s_bdev;
- fmode_t mode = sb->s_mode;
bdev->bd_super = NULL;
generic_shutdown_super(sb);
sync_blockdev(bdev);
- WARN_ON_ONCE(!(mode & FMODE_EXCL));
- blkdev_put(bdev, mode | FMODE_EXCL);
+ blkdev_put(bdev, sb->s_type);
}
EXPORT_SYMBOL(kill_block_super);
@@ -396,8 +396,8 @@ xfs_blkdev_get(
{
int error = 0;
- *bdevp = blkdev_get_by_path(name, FMODE_READ|FMODE_WRITE|FMODE_EXCL,
- mp, &xfs_holder_ops);
+ *bdevp = blkdev_get_by_path(name, FMODE_READ | FMODE_WRITE, mp,
+ &xfs_holder_ops);
if (IS_ERR(*bdevp)) {
error = PTR_ERR(*bdevp);
xfs_warn(mp, "Invalid device [%s], error=%d", name, error);
@@ -408,10 +408,11 @@ xfs_blkdev_get(
STATIC void
xfs_blkdev_put(
+ struct xfs_mount *mp,
struct block_device *bdev)
{
if (bdev)
- blkdev_put(bdev, FMODE_READ|FMODE_WRITE|FMODE_EXCL);
+ blkdev_put(bdev, mp);
}
STATIC void
@@ -422,13 +423,13 @@ xfs_close_devices(
struct block_device *logdev = mp->m_logdev_targp->bt_bdev;
xfs_free_buftarg(mp->m_logdev_targp);
- xfs_blkdev_put(logdev);
+ xfs_blkdev_put(mp, logdev);
}
if (mp->m_rtdev_targp) {
struct block_device *rtdev = mp->m_rtdev_targp->bt_bdev;
xfs_free_buftarg(mp->m_rtdev_targp);
- xfs_blkdev_put(rtdev);
+ xfs_blkdev_put(mp, rtdev);
}
xfs_free_buftarg(mp->m_ddev_targp);
}
@@ -503,10 +504,10 @@ xfs_open_devices(
out_free_ddev_targ:
xfs_free_buftarg(mp->m_ddev_targp);
out_close_rtdev:
- xfs_blkdev_put(rtdev);
+ xfs_blkdev_put(mp, rtdev);
out_close_logdev:
if (logdev && logdev != ddev)
- xfs_blkdev_put(logdev);
+ xfs_blkdev_put(mp, logdev);
return error;
}
@@ -1480,7 +1480,7 @@ struct block_device *blkdev_get_by_path(const char *path, fmode_t mode,
int bd_prepare_to_claim(struct block_device *bdev, void *holder,
const struct blk_holder_ops *hops);
void bd_abort_claiming(struct block_device *bdev, void *holder);
-void blkdev_put(struct block_device *bdev, fmode_t mode);
+void blkdev_put(struct block_device *bdev, void *holder);
/* just for blk-cgroup, don't use elsewhere */
struct block_device *blkdev_get_no_open(dev_t dev);
@@ -688,22 +688,18 @@ static int load_image_and_restore(bool snapshot_test)
{
int error;
unsigned int flags;
- fmode_t mode = FMODE_READ;
-
- if (snapshot_test)
- mode |= FMODE_EXCL;
pm_pr_dbg("Loading hibernation image.\n");
lock_device_hotplug();
error = create_basic_memory_bitmaps();
if (error) {
- swsusp_close(mode);
+ swsusp_close(snapshot_test);
goto Unlock;
}
error = swsusp_read(&flags);
- swsusp_close(mode);
+ swsusp_close(snapshot_test);
if (!error)
error = hibernation_restore(flags & SF_PLATFORM_MODE);
@@ -956,7 +952,7 @@ static int software_resume(void)
/* The snapshot device should not be opened while we're running */
if (!hibernate_acquire()) {
error = -EBUSY;
- swsusp_close(FMODE_READ | FMODE_EXCL);
+ swsusp_close(false);
goto Unlock;
}
@@ -991,7 +987,7 @@ static int software_resume(void)
pm_pr_dbg("Hibernation image not present or could not be loaded.\n");
return error;
Close_Finish:
- swsusp_close(FMODE_READ | FMODE_EXCL);
+ swsusp_close(false);
goto Finish;
}
@@ -177,7 +177,7 @@ int swsusp_check(bool snapshot_test);
extern void swsusp_free(void);
extern int swsusp_read(unsigned int *flags_p);
extern int swsusp_write(unsigned int flags);
-extern void swsusp_close(fmode_t);
+void swsusp_close(bool snapshot_test);
#ifdef CONFIG_SUSPEND
extern int swsusp_unmark(void);
#endif
@@ -363,7 +363,7 @@ static int swsusp_swap_check(void)
res = set_blocksize(hib_resume_bdev, PAGE_SIZE);
if (res < 0)
- blkdev_put(hib_resume_bdev, FMODE_WRITE);
+ blkdev_put(hib_resume_bdev, NULL);
return res;
}
@@ -443,7 +443,7 @@ static int get_swap_writer(struct swap_map_handle *handle)
err_rel:
release_swap_writer(handle);
err_close:
- swsusp_close(FMODE_WRITE);
+ swsusp_close(false);
return ret;
}
@@ -508,7 +508,7 @@ static int swap_writer_finish(struct swap_map_handle *handle,
if (error)
free_all_swap_pages(root_swap);
release_swap_writer(handle);
- swsusp_close(FMODE_WRITE);
+ swsusp_close(false);
return error;
}
@@ -1518,14 +1518,11 @@ static void *swsusp_holder;
int swsusp_check(bool snapshot_test)
{
+ void *holder = snapshot_test ? &swsusp_holder : NULL;
int error;
- fmode_t mode = FMODE_READ;
- if (snapshot_test)
- mode |= FMODE_EXCL;
-
- hib_resume_bdev = blkdev_get_by_dev(swsusp_resume_device,
- mode, &swsusp_holder, NULL);
+ hib_resume_bdev = blkdev_get_by_dev(swsusp_resume_device, FMODE_READ,
+ holder, NULL);
if (!IS_ERR(hib_resume_bdev)) {
set_blocksize(hib_resume_bdev, PAGE_SIZE);
clear_page(swsusp_header);
@@ -1552,7 +1549,7 @@ int swsusp_check(bool snapshot_test)
put:
if (error)
- blkdev_put(hib_resume_bdev, mode);
+ blkdev_put(hib_resume_bdev, holder);
else
pr_debug("Image signature found, resuming\n");
} else {
@@ -1569,14 +1566,14 @@ int swsusp_check(bool snapshot_test)
* swsusp_close - close swap device.
*/
-void swsusp_close(fmode_t mode)
+void swsusp_close(bool snapshot_test)
{
if (IS_ERR(hib_resume_bdev)) {
pr_debug("Image device not initialised\n");
return;
}
- blkdev_put(hib_resume_bdev, mode);
+ blkdev_put(hib_resume_bdev, snapshot_test ? &swsusp_holder : NULL);
}
/**
@@ -2539,7 +2539,7 @@ SYSCALL_DEFINE1(swapoff, const char __user *, specialfile)
struct block_device *bdev = I_BDEV(inode);
set_blocksize(bdev, old_block_size);
- blkdev_put(bdev, FMODE_READ | FMODE_WRITE | FMODE_EXCL);
+ blkdev_put(bdev, p);
}
inode_lock(inode);
@@ -2770,8 +2770,7 @@ static int claim_swapfile(struct swap_info_struct *p, struct inode *inode)
if (S_ISBLK(inode->i_mode)) {
p->bdev = blkdev_get_by_dev(inode->i_rdev,
- FMODE_READ | FMODE_WRITE | FMODE_EXCL, p,
- NULL);
+ FMODE_READ | FMODE_WRITE, p, NULL);
if (IS_ERR(p->bdev)) {
error = PTR_ERR(p->bdev);
p->bdev = NULL;
@@ -3222,7 +3221,7 @@ SYSCALL_DEFINE2(swapon, const char __user *, specialfile, int, swap_flags)
p->cluster_next_cpu = NULL;
if (inode && S_ISBLK(inode->i_mode) && p->bdev) {
set_blocksize(p->bdev, p->old_block_size);
- blkdev_put(p->bdev, FMODE_READ | FMODE_WRITE | FMODE_EXCL);
+ blkdev_put(p->bdev, p);
}
inode = NULL;
destroy_swap_extents(p);