btrfs: move btrfs_init_dev_replace_tgtdev to dev-replace.c and make static
The function logically belongs there and there's only a single caller, no need to export it. No code changes. Reviewed-by: Anand Jain <anand.jain@oracle.com> Signed-off-by: David Sterba <dsterba@suse.com>
This commit is contained in:
David Sterba
parent
a425f9d475
commit
d48f39d5a5
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@ -176,6 +176,105 @@ out:
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return ret;
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}
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/*
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* Initialize a new device for device replace target from a given source dev
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* and path.
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*
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* Return 0 and new device in @device_out, otherwise return < 0
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*/
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static int btrfs_init_dev_replace_tgtdev(struct btrfs_fs_info *fs_info,
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const char *device_path,
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struct btrfs_device *srcdev,
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struct btrfs_device **device_out)
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{
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struct btrfs_device *device;
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struct block_device *bdev;
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struct list_head *devices;
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struct rcu_string *name;
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u64 devid = BTRFS_DEV_REPLACE_DEVID;
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int ret = 0;
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*device_out = NULL;
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if (fs_info->fs_devices->seeding) {
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btrfs_err(fs_info, "the filesystem is a seed filesystem!");
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return -EINVAL;
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}
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bdev = blkdev_get_by_path(device_path, FMODE_WRITE | FMODE_EXCL,
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fs_info->bdev_holder);
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if (IS_ERR(bdev)) {
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btrfs_err(fs_info, "target device %s is invalid!", device_path);
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return PTR_ERR(bdev);
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}
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filemap_write_and_wait(bdev->bd_inode->i_mapping);
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devices = &fs_info->fs_devices->devices;
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list_for_each_entry(device, devices, dev_list) {
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if (device->bdev == bdev) {
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btrfs_err(fs_info,
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"target device is in the filesystem!");
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ret = -EEXIST;
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goto error;
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}
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}
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if (i_size_read(bdev->bd_inode) <
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btrfs_device_get_total_bytes(srcdev)) {
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btrfs_err(fs_info,
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"target device is smaller than source device!");
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ret = -EINVAL;
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goto error;
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}
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device = btrfs_alloc_device(NULL, &devid, NULL);
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if (IS_ERR(device)) {
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ret = PTR_ERR(device);
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goto error;
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}
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name = rcu_string_strdup(device_path, GFP_KERNEL);
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if (!name) {
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btrfs_free_device(device);
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ret = -ENOMEM;
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goto error;
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}
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rcu_assign_pointer(device->name, name);
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mutex_lock(&fs_info->fs_devices->device_list_mutex);
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set_bit(BTRFS_DEV_STATE_WRITEABLE, &device->dev_state);
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device->generation = 0;
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device->io_width = fs_info->sectorsize;
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device->io_align = fs_info->sectorsize;
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device->sector_size = fs_info->sectorsize;
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device->total_bytes = btrfs_device_get_total_bytes(srcdev);
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device->disk_total_bytes = btrfs_device_get_disk_total_bytes(srcdev);
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device->bytes_used = btrfs_device_get_bytes_used(srcdev);
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device->commit_total_bytes = srcdev->commit_total_bytes;
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device->commit_bytes_used = device->bytes_used;
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device->fs_info = fs_info;
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device->bdev = bdev;
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set_bit(BTRFS_DEV_STATE_IN_FS_METADATA, &device->dev_state);
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set_bit(BTRFS_DEV_STATE_REPLACE_TGT, &device->dev_state);
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device->mode = FMODE_EXCL;
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device->dev_stats_valid = 1;
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set_blocksize(device->bdev, BTRFS_BDEV_BLOCKSIZE);
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device->fs_devices = fs_info->fs_devices;
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list_add(&device->dev_list, &fs_info->fs_devices->devices);
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fs_info->fs_devices->num_devices++;
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fs_info->fs_devices->open_devices++;
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mutex_unlock(&fs_info->fs_devices->device_list_mutex);
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*device_out = device;
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return 0;
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error:
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blkdev_put(bdev, FMODE_EXCL);
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return ret;
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}
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/*
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* called from commit_transaction. Writes changed device replace state to
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* disk.
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@ -2612,105 +2612,6 @@ error:
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return ret;
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}
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/*
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* Initialize a new device for device replace target from a given source dev
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* and path.
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*
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* Return 0 and new device in @device_out, otherwise return < 0
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*/
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int btrfs_init_dev_replace_tgtdev(struct btrfs_fs_info *fs_info,
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const char *device_path,
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struct btrfs_device *srcdev,
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struct btrfs_device **device_out)
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{
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struct btrfs_device *device;
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struct block_device *bdev;
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struct list_head *devices;
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struct rcu_string *name;
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u64 devid = BTRFS_DEV_REPLACE_DEVID;
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int ret = 0;
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*device_out = NULL;
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if (fs_info->fs_devices->seeding) {
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btrfs_err(fs_info, "the filesystem is a seed filesystem!");
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return -EINVAL;
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}
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bdev = blkdev_get_by_path(device_path, FMODE_WRITE | FMODE_EXCL,
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fs_info->bdev_holder);
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if (IS_ERR(bdev)) {
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btrfs_err(fs_info, "target device %s is invalid!", device_path);
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return PTR_ERR(bdev);
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}
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filemap_write_and_wait(bdev->bd_inode->i_mapping);
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devices = &fs_info->fs_devices->devices;
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list_for_each_entry(device, devices, dev_list) {
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if (device->bdev == bdev) {
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btrfs_err(fs_info,
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"target device is in the filesystem!");
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ret = -EEXIST;
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goto error;
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}
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}
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if (i_size_read(bdev->bd_inode) <
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btrfs_device_get_total_bytes(srcdev)) {
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btrfs_err(fs_info,
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"target device is smaller than source device!");
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ret = -EINVAL;
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goto error;
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}
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device = btrfs_alloc_device(NULL, &devid, NULL);
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if (IS_ERR(device)) {
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ret = PTR_ERR(device);
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goto error;
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}
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name = rcu_string_strdup(device_path, GFP_KERNEL);
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if (!name) {
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btrfs_free_device(device);
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ret = -ENOMEM;
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goto error;
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}
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rcu_assign_pointer(device->name, name);
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mutex_lock(&fs_info->fs_devices->device_list_mutex);
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set_bit(BTRFS_DEV_STATE_WRITEABLE, &device->dev_state);
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device->generation = 0;
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device->io_width = fs_info->sectorsize;
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device->io_align = fs_info->sectorsize;
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device->sector_size = fs_info->sectorsize;
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device->total_bytes = btrfs_device_get_total_bytes(srcdev);
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device->disk_total_bytes = btrfs_device_get_disk_total_bytes(srcdev);
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device->bytes_used = btrfs_device_get_bytes_used(srcdev);
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device->commit_total_bytes = srcdev->commit_total_bytes;
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device->commit_bytes_used = device->bytes_used;
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device->fs_info = fs_info;
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device->bdev = bdev;
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set_bit(BTRFS_DEV_STATE_IN_FS_METADATA, &device->dev_state);
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set_bit(BTRFS_DEV_STATE_REPLACE_TGT, &device->dev_state);
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device->mode = FMODE_EXCL;
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device->dev_stats_valid = 1;
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set_blocksize(device->bdev, BTRFS_BDEV_BLOCKSIZE);
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device->fs_devices = fs_info->fs_devices;
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list_add(&device->dev_list, &fs_info->fs_devices->devices);
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fs_info->fs_devices->num_devices++;
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fs_info->fs_devices->open_devices++;
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mutex_unlock(&fs_info->fs_devices->device_list_mutex);
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*device_out = device;
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return 0;
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error:
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blkdev_put(bdev, FMODE_EXCL);
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return ret;
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}
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static noinline int btrfs_update_device(struct btrfs_trans_handle *trans,
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struct btrfs_device *device)
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{
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@ -432,10 +432,6 @@ struct btrfs_device *btrfs_find_device(struct btrfs_fs_info *fs_info, u64 devid,
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u8 *uuid, u8 *fsid);
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int btrfs_shrink_device(struct btrfs_device *device, u64 new_size);
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int btrfs_init_new_device(struct btrfs_fs_info *fs_info, const char *path);
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int btrfs_init_dev_replace_tgtdev(struct btrfs_fs_info *fs_info,
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const char *device_path,
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struct btrfs_device *srcdev,
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struct btrfs_device **device_out);
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int btrfs_balance(struct btrfs_balance_control *bctl,
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struct btrfs_ioctl_balance_args *bargs);
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int btrfs_resume_balance_async(struct btrfs_fs_info *fs_info);
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