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fs: btrfs: Cleanup the old implementation

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This cleans up the now unneeded code from the old btrfs implementation.

Signed-off-by: Qu Wenruo <wqu@suse.com>
Reviewed-by: Marek Behún <marek.behun@nic.cz>
This commit is contained in:
Qu Wenruo 2020-06-24 18:03:15 +02:00 • committed by Tom Rini
parent e8e95c7ee1
commit 5573c20fad
14 changed files with 3 additions and 1366 deletions
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30
fs/btrfs/disk-io.c
View file

@ -310,36 +310,6 @@ int btrfs_read_dev_super(struct blk_desc *desc, struct disk_partition *part,
return 0;
}
int btrfs_read_superblock(void)
{
ALLOC_CACHE_ALIGN_BUFFER(char, raw_sb, BTRFS_SUPER_INFO_SIZE);
struct btrfs_super_block *sb = (struct btrfs_super_block *) raw_sb;
int ret;
btrfs_info.sb.generation = 0;
ret = btrfs_read_dev_super(btrfs_blk_desc, btrfs_part_info, sb);
if (ret < 0) {
pr_debug("%s: No valid BTRFS superblock found!\n", __func__);
return ret;
}
btrfs_super_block_to_cpu(sb);
memcpy(&btrfs_info.sb, sb, sizeof(*sb));
if (btrfs_info.sb.num_devices != 1) {
printf("%s: Unsupported number of devices (%lli). This driver "
"only supports filesystem on one device.\n", __func__,
btrfs_info.sb.num_devices);
return -1;
}
pr_debug("Chosen superblock with generation = %llu\n",
btrfs_info.sb.generation);
return 0;
}
static int __csum_tree_block_size(struct extent_buffer *buf, u16 csum_size,
int verify, int silent, u16 csum_type)
{