summaryrefslogtreecommitdiffstats
path: root/drivers/md/dm.c
diff options
context:
space:
mode:
Diffstat (limited to 'drivers/md/dm.c')
-rw-r--r--drivers/md/dm.c52
1 files changed, 31 insertions, 21 deletions
diff --git a/drivers/md/dm.c b/drivers/md/dm.c
index 0dc3650c7f..7d0746b37c 100644
--- a/drivers/md/dm.c
+++ b/drivers/md/dm.c
@@ -726,7 +726,8 @@ static struct table_device *open_table_device(struct mapped_device *md,
dev_t dev, blk_mode_t mode)
{
struct table_device *td;
- struct bdev_handle *bdev_handle;
+ struct file *bdev_file;
+ struct block_device *bdev;
u64 part_off;
int r;
@@ -735,34 +736,36 @@ static struct table_device *open_table_device(struct mapped_device *md,
return ERR_PTR(-ENOMEM);
refcount_set(&td->count, 1);
- bdev_handle = bdev_open_by_dev(dev, mode, _dm_claim_ptr, NULL);
- if (IS_ERR(bdev_handle)) {
- r = PTR_ERR(bdev_handle);
+ bdev_file = bdev_file_open_by_dev(dev, mode, _dm_claim_ptr, NULL);
+ if (IS_ERR(bdev_file)) {
+ r = PTR_ERR(bdev_file);
goto out_free_td;
}
+ bdev = file_bdev(bdev_file);
+
/*
* We can be called before the dm disk is added. In that case we can't
* register the holder relation here. It will be done once add_disk was
* called.
*/
if (md->disk->slave_dir) {
- r = bd_link_disk_holder(bdev_handle->bdev, md->disk);
+ r = bd_link_disk_holder(bdev, md->disk);
if (r)
goto out_blkdev_put;
}
td->dm_dev.mode = mode;
- td->dm_dev.bdev = bdev_handle->bdev;
- td->dm_dev.bdev_handle = bdev_handle;
- td->dm_dev.dax_dev = fs_dax_get_by_bdev(bdev_handle->bdev, &part_off,
+ td->dm_dev.bdev = bdev;
+ td->dm_dev.bdev_file = bdev_file;
+ td->dm_dev.dax_dev = fs_dax_get_by_bdev(bdev, &part_off,
NULL, NULL);
format_dev_t(td->dm_dev.name, dev);
list_add(&td->list, &md->table_devices);
return td;
out_blkdev_put:
- bdev_release(bdev_handle);
+ __fput_sync(bdev_file);
out_free_td:
kfree(td);
return ERR_PTR(r);
@@ -775,7 +778,13 @@ 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);
- bdev_release(td->dm_dev.bdev_handle);
+
+ /* Leverage async fput() if DMF_DEFERRED_REMOVE set */
+ if (unlikely(test_bit(DMF_DEFERRED_REMOVE, &md->flags)))
+ fput(td->dm_dev.bdev_file);
+ else
+ __fput_sync(td->dm_dev.bdev_file);
+
put_dax(td->dm_dev.dax_dev);
list_del(&td->list);
kfree(td);
@@ -2054,6 +2063,7 @@ static void cleanup_mapped_device(struct mapped_device *md)
static struct mapped_device *alloc_dev(int minor)
{
int r, numa_node_id = dm_get_numa_node();
+ struct dax_device *dax_dev;
struct mapped_device *md;
void *old_md;
@@ -2098,8 +2108,8 @@ static struct mapped_device *alloc_dev(int minor)
* established. If request-based table is loaded: blk-mq will
* override accordingly.
*/
- md->disk = blk_alloc_disk(md->numa_node_id);
- if (!md->disk)
+ md->disk = blk_alloc_disk(NULL, md->numa_node_id);
+ if (IS_ERR(md->disk))
goto bad;
md->queue = md->disk->queue;
@@ -2122,15 +2132,15 @@ static struct mapped_device *alloc_dev(int minor)
md->disk->private_data = md;
sprintf(md->disk->disk_name, "dm-%d", minor);
- if (IS_ENABLED(CONFIG_FS_DAX)) {
- md->dax_dev = alloc_dax(md, &dm_dax_ops);
- if (IS_ERR(md->dax_dev)) {
- md->dax_dev = NULL;
+ dax_dev = alloc_dax(md, &dm_dax_ops);
+ if (IS_ERR(dax_dev)) {
+ if (PTR_ERR(dax_dev) != -EOPNOTSUPP)
goto bad;
- }
- set_dax_nocache(md->dax_dev);
- set_dax_nomc(md->dax_dev);
- if (dax_add_host(md->dax_dev, md->disk))
+ } else {
+ set_dax_nocache(dax_dev);
+ set_dax_nomc(dax_dev);
+ md->dax_dev = dax_dev;
+ if (dax_add_host(dax_dev, md->disk))
goto bad;
}
@@ -3526,5 +3536,5 @@ module_param(swap_bios, int, 0644);
MODULE_PARM_DESC(swap_bios, "Maximum allowed inflight swap IOs");
MODULE_DESCRIPTION(DM_NAME " driver");
-MODULE_AUTHOR("Joe Thornber <dm-devel@redhat.com>");
+MODULE_AUTHOR("Joe Thornber <dm-devel@lists.linux.dev>");
MODULE_LICENSE("GPL");