Re: [patch] Btrfs: fix some endian bugs handling the root times

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On Mon, Jul 30, 2012 at 10:10 AM, Dan Carpenter
<dan.carpenter@xxxxxxxxxx> wrote:
> "trans->transid" is cpu endian but we want to store the data as little
> endian.  "item->ctime.nsec" is only 32 bits, not 64.
>
> Signed-off-by: Dan Carpenter <dan.carpenter@xxxxxxxxxx>
> ---
> Applies to linux-next.
>
> diff --git a/fs/btrfs/ioctl.c b/fs/btrfs/ioctl.c
> index 43f0012..a1fbca0 100644
> --- a/fs/btrfs/ioctl.c
> +++ b/fs/btrfs/ioctl.c
> @@ -424,7 +424,7 @@ static noinline int create_subvol(struct btrfs_root *root,
>         uuid_le_gen(&new_uuid);
>         memcpy(root_item.uuid, new_uuid.b, BTRFS_UUID_SIZE);
>         root_item.otime.sec = cpu_to_le64(cur_time.tv_sec);
> -       root_item.otime.nsec = cpu_to_le64(cur_time.tv_nsec);
> +       root_item.otime.nsec = cpu_to_le32(cur_time.tv_nsec);
>         root_item.ctime = root_item.otime;
>         btrfs_set_root_ctransid(&root_item, trans->transid);
>         btrfs_set_root_otransid(&root_item, trans->transid);
> diff --git a/fs/btrfs/transaction.c b/fs/btrfs/transaction.c
> index 7ac7cdc..7208ada 100644
> --- a/fs/btrfs/transaction.c
> +++ b/fs/btrfs/transaction.c
> @@ -1061,7 +1061,7 @@ static noinline int create_pending_snapshot(struct btrfs_trans_handle *trans,
>         memcpy(new_root_item->parent_uuid, root->root_item.uuid,
>                         BTRFS_UUID_SIZE);
>         new_root_item->otime.sec = cpu_to_le64(cur_time.tv_sec);
> -       new_root_item->otime.nsec = cpu_to_le64(cur_time.tv_nsec);
> +       new_root_item->otime.nsec = cpu_to_le32(cur_time.tv_nsec);
>         btrfs_set_root_otransid(new_root_item, trans->transid);
>         memset(&new_root_item->stime, 0, sizeof(new_root_item->stime));
>         memset(&new_root_item->rtime, 0, sizeof(new_root_item->rtime));
> diff --git a/fs/btrfs/root-tree.c b/fs/btrfs/root-tree.c
> index 6bb465c..10d8e4d 100644
> --- a/fs/btrfs/root-tree.c
> +++ b/fs/btrfs/root-tree.c
> @@ -544,8 +544,8 @@ void btrfs_update_root_times(struct btrfs_trans_handle *trans,
>         struct timespec ct = CURRENT_TIME;
>
>         spin_lock(&root->root_times_lock);
> -       item->ctransid = trans->transid;
> +       item->ctransid = cpu_to_le64(trans->transid);
>         item->ctime.sec = cpu_to_le64(ct.tv_sec);
> -       item->ctime.nsec = cpu_to_le64(ct.tv_nsec);
> +       item->ctime.nsec = cpu_to_le32(ct.tv_nsec);
>         spin_unlock(&root->root_times_lock);
>  }

Thanks. I will include this patch in the next send/receive pull request.
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