btrfs: use appropriate define for the fsid
Though BTRFS_FSID_SIZE and BTRFS_UUID_SIZE are of the same size, we
should use the matching constant for the fsid buffer.
Signed-off-by: Anand Jain <anand.jain@oracle.com>
Reviewed-by: David Sterba <dsterba@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>
diff --git a/fs/btrfs/disk-io.c b/fs/btrfs/disk-io.c
index c2d3699..3715478 100644
--- a/fs/btrfs/disk-io.c
+++ b/fs/btrfs/disk-io.c
@@ -529,7 +529,7 @@ static int check_tree_block_fsid(struct btrfs_fs_info *fs_info,
struct extent_buffer *eb)
{
struct btrfs_fs_devices *fs_devices = fs_info->fs_devices;
- u8 fsid[BTRFS_UUID_SIZE];
+ u8 fsid[BTRFS_FSID_SIZE];
int ret = 1;
read_extent_buffer(eb, fsid, btrfs_header_fsid(), BTRFS_FSID_SIZE);
@@ -3681,7 +3681,7 @@ int write_all_supers(struct btrfs_fs_info *fs_info, int max_mirrors)
btrfs_set_stack_device_io_width(dev_item, dev->io_width);
btrfs_set_stack_device_sector_size(dev_item, dev->sector_size);
memcpy(dev_item->uuid, dev->uuid, BTRFS_UUID_SIZE);
- memcpy(dev_item->fsid, dev->fs_devices->fsid, BTRFS_UUID_SIZE);
+ memcpy(dev_item->fsid, dev->fs_devices->fsid, BTRFS_FSID_SIZE);
flags = btrfs_super_flags(sb);
btrfs_set_super_flags(sb, flags | BTRFS_HEADER_FLAG_WRITTEN);
@@ -4120,7 +4120,7 @@ static int btrfs_check_super_valid(struct btrfs_fs_info *fs_info)
ret = -EINVAL;
}
- if (memcmp(fs_info->fsid, sb->dev_item.fsid, BTRFS_UUID_SIZE) != 0) {
+ if (memcmp(fs_info->fsid, sb->dev_item.fsid, BTRFS_FSID_SIZE) != 0) {
btrfs_err(fs_info,
"dev_item UUID does not match fsid: %pU != %pU",
fs_info->fsid, sb->dev_item.fsid);