btrfs: root->fs_info cleanup, use fs_info->dev_root everywhere
Signed-off-by: Jeff Mahoney <jeffm@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>
diff --git a/fs/btrfs/volumes.c b/fs/btrfs/volumes.c
index 1622dc7..4a21d82 100644
--- a/fs/btrfs/volumes.c
+++ b/fs/btrfs/volumes.c
@@ -367,7 +367,7 @@ static noinline void run_scheduled_bios(struct btrfs_device *device)
blk_start_plug(&plug);
bdi = blk_get_backing_dev_info(device->bdev);
- fs_info = device->dev_root->fs_info;
+ fs_info = device->fs_info;
limit = btrfs_async_submit_limit(fs_info);
limit = limit * 2 / 3;
@@ -1179,7 +1179,7 @@ int btrfs_account_dev_extents_size(struct btrfs_device *device, u64 start,
u64 end, u64 *length)
{
struct btrfs_key key;
- struct btrfs_root *root = device->dev_root;
+ struct btrfs_root *root = device->fs_info->dev_root;
struct btrfs_dev_extent *dev_extent;
struct btrfs_path *path;
u64 extent_end;
@@ -1262,7 +1262,7 @@ static int contains_pending_extent(struct btrfs_transaction *transaction,
struct btrfs_device *device,
u64 *start, u64 len)
{
- struct btrfs_fs_info *fs_info = device->dev_root->fs_info;
+ struct btrfs_fs_info *fs_info = device->fs_info;
struct extent_map *em;
struct list_head *search_list = &fs_info->pinned_chunks;
int ret = 0;
@@ -1338,8 +1338,8 @@ int find_free_dev_extent_start(struct btrfs_transaction *transaction,
struct btrfs_device *device, u64 num_bytes,
u64 search_start, u64 *start, u64 *len)
{
+ struct btrfs_root *root = device->fs_info->dev_root;
struct btrfs_key key;
- struct btrfs_root *root = device->dev_root;
struct btrfs_dev_extent *dev_extent;
struct btrfs_path *path;
u64 hole_size;
@@ -1508,9 +1508,9 @@ static int btrfs_free_dev_extent(struct btrfs_trans_handle *trans,
struct btrfs_device *device,
u64 start, u64 *dev_extent_len)
{
+ struct btrfs_root *root = device->fs_info->dev_root;
int ret;
struct btrfs_path *path;
- struct btrfs_root *root = device->dev_root;
struct btrfs_key key;
struct btrfs_key found_key;
struct extent_buffer *leaf = NULL;
@@ -1569,7 +1569,7 @@ static int btrfs_alloc_dev_extent(struct btrfs_trans_handle *trans,
{
int ret;
struct btrfs_path *path;
- struct btrfs_root *root = device->dev_root;
+ struct btrfs_root *root = device->fs_info->dev_root;
struct btrfs_dev_extent *extent;
struct extent_buffer *leaf;
struct btrfs_key key;
@@ -2387,7 +2387,7 @@ int btrfs_init_new_device(struct btrfs_fs_info *fs_info, char *device_path)
device->total_bytes = i_size_read(bdev->bd_inode);
device->disk_total_bytes = device->total_bytes;
device->commit_total_bytes = device->total_bytes;
- device->dev_root = root->fs_info->dev_root;
+ device->fs_info = fs_info;
device->bdev = bdev;
device->in_fs_metadata = 1;
device->is_tgtdev_for_dev_replace = 0;
@@ -2596,7 +2596,7 @@ int btrfs_init_dev_replace_tgtdev(struct btrfs_root *root, char *device_path,
ASSERT(list_empty(&srcdev->resized_list));
device->commit_total_bytes = srcdev->commit_total_bytes;
device->commit_bytes_used = device->bytes_used;
- device->dev_root = fs_info->dev_root;
+ device->fs_info = fs_info;
device->bdev = bdev;
device->in_fs_metadata = 1;
device->is_tgtdev_for_dev_replace = 1;
@@ -2624,7 +2624,7 @@ void btrfs_init_dev_replace_tgtdev_for_resume(struct btrfs_fs_info *fs_info,
tgtdev->io_width = fs_info->dev_root->sectorsize;
tgtdev->io_align = fs_info->dev_root->sectorsize;
tgtdev->sector_size = fs_info->dev_root->sectorsize;
- tgtdev->dev_root = fs_info->dev_root;
+ tgtdev->fs_info = fs_info;
tgtdev->in_fs_metadata = 1;
}
@@ -2638,7 +2638,7 @@ static noinline int btrfs_update_device(struct btrfs_trans_handle *trans,
struct extent_buffer *leaf;
struct btrfs_key key;
- root = device->dev_root->fs_info->chunk_root;
+ root = device->fs_info->chunk_root;
path = btrfs_alloc_path();
if (!path)
@@ -2679,8 +2679,7 @@ static noinline int btrfs_update_device(struct btrfs_trans_handle *trans,
int btrfs_grow_device(struct btrfs_trans_handle *trans,
struct btrfs_device *device, u64 new_size)
{
- struct btrfs_super_block *super_copy =
- device->dev_root->fs_info->super_copy;
+ struct btrfs_super_block *super_copy = device->fs_info->super_copy;
struct btrfs_fs_devices *fs_devices;
u64 old_total;
u64 diff;
@@ -2688,28 +2687,28 @@ int btrfs_grow_device(struct btrfs_trans_handle *trans,
if (!device->writeable)
return -EACCES;
- lock_chunks(device->dev_root);
+ lock_chunks(device->fs_info->dev_root);
old_total = btrfs_super_total_bytes(super_copy);
diff = new_size - device->total_bytes;
if (new_size <= device->total_bytes ||
device->is_tgtdev_for_dev_replace) {
- unlock_chunks(device->dev_root);
+ unlock_chunks(device->fs_info->dev_root);
return -EINVAL;
}
- fs_devices = device->dev_root->fs_info->fs_devices;
+ fs_devices = device->fs_info->fs_devices;
btrfs_set_super_total_bytes(super_copy, old_total + diff);
device->fs_devices->total_rw_bytes += diff;
btrfs_device_set_total_bytes(device, new_size);
btrfs_device_set_disk_total_bytes(device, new_size);
- btrfs_clear_space_info_full(device->dev_root->fs_info);
+ btrfs_clear_space_info_full(device->fs_info);
if (list_empty(&device->resized_list))
list_add_tail(&device->resized_list,
&fs_devices->resized_devices);
- unlock_chunks(device->dev_root);
+ unlock_chunks(device->fs_info->dev_root);
return btrfs_update_device(trans, device);
}
@@ -4356,7 +4355,7 @@ int btrfs_check_uuid_tree(struct btrfs_fs_info *fs_info)
int btrfs_shrink_device(struct btrfs_device *device, u64 new_size)
{
struct btrfs_trans_handle *trans;
- struct btrfs_root *root = device->dev_root;
+ struct btrfs_root *root = device->fs_info->dev_root;
struct btrfs_dev_extent *dev_extent = NULL;
struct btrfs_path *path;
u64 length;
@@ -6884,7 +6883,7 @@ void btrfs_init_devices_late(struct btrfs_fs_info *fs_info)
while (fs_devices) {
mutex_lock(&fs_devices->device_list_mutex);
list_for_each_entry(device, &fs_devices->devices, dev_list)
- device->dev_root = fs_info->dev_root;
+ device->fs_info = fs_info;
mutex_unlock(&fs_devices->device_list_mutex);
fs_devices = fs_devices->seed;
@@ -7060,7 +7059,7 @@ static void btrfs_dev_stat_print_on_error(struct btrfs_device *dev)
{
if (!dev->dev_stats_valid)
return;
- btrfs_err_rl_in_rcu(dev->dev_root->fs_info,
+ btrfs_err_rl_in_rcu(dev->fs_info,
"bdev %s errs: wr %u, rd %u, flush %u, corrupt %u, gen %u",
rcu_str_deref(dev->name),
btrfs_dev_stat_read(dev, BTRFS_DEV_STAT_WRITE_ERRS),
@@ -7080,7 +7079,7 @@ static void btrfs_dev_stat_print_on_load(struct btrfs_device *dev)
if (i == BTRFS_DEV_STAT_VALUES_MAX)
return; /* all values == 0, suppress message */
- btrfs_info_in_rcu(dev->dev_root->fs_info,
+ btrfs_info_in_rcu(dev->fs_info,
"bdev %s errs: wr %u, rd %u, flush %u, corrupt %u, gen %u",
rcu_str_deref(dev->name),
btrfs_dev_stat_read(dev, BTRFS_DEV_STAT_WRITE_ERRS),
