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btrfs: convert latest_bdev type to btrfs_device and rename

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In preparation to fix a bug in btrfs_show_devname().

Convert fs_devices::latest_bdev type from struct block_device to struct
btrfs_device and, rename the member to fs_devices::latest_dev.
So that btrfs_show_devname() can use fs_devices::latest_dev::name.

Tested-by: Su Yue <l@damenly.su>
Signed-off-by: Anand Jain <anand.jain@oracle.com>
Reviewed-by: David Sterba <dsterba@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>
This commit is contained in:
Anand Jain 2021-08-24 13:05:19 +08:00 • committed by David Sterba
parent 7ae9bd1803
commit d24fa5c1da
6 changed files with 16 additions and 12 deletions
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6
fs/btrfs/disk-io.c
View file

@ -3231,12 +3231,12 @@ int __cold open_ctree(struct super_block *sb, struct btrfs_fs_devices *fs_device
mapping_set_gfp_mask(fs_info->btree_inode->i_mapping, GFP_NOFS);
btrfs_init_btree_inode(fs_info);
invalidate_bdev(fs_devices->latest_bdev);
invalidate_bdev(fs_devices->latest_dev->bdev);
/*
* Read super block and check the signature bytes only
*/
disk_super = btrfs_read_dev_super(fs_devices->latest_bdev);
disk_super = btrfs_read_dev_super(fs_devices->latest_dev->bdev);
if (IS_ERR(disk_super)) {
err = PTR_ERR(disk_super);
goto fail_alloc;
@ -3473,7 +3473,7 @@ int __cold open_ctree(struct super_block *sb, struct btrfs_fs_devices *fs_device
* below in btrfs_init_dev_replace().
*/
btrfs_free_extra_devids(fs_devices);
if (!fs_devices->latest_bdev) {
if (!fs_devices->latest_dev->bdev) {
btrfs_err(fs_info, "failed to read devices");
goto fail_tree_roots;
}