Hi,
On Mon, Dec 16, 2019 at 7:29 AM Chao Yu <yuchao0@xxxxxxxxxx> wrote:
>
> This patch tries to support compression in f2fs.
> --- a/fs/f2fs/file.c
> +++ b/fs/f2fs/file.c
> @@ -667,6 +719,24 @@ int f2fs_truncate_blocks(struct inode *inode, u64 from, bool lock)
> return err;
> }
>
> +int f2fs_truncate_blocks(struct inode *inode, u64 from, bool lock)
> +{
> + u64 free_from = from;
> +
> + /*
> + * for compressed file, only support cluster size
> + * aligned truncation.
> + */
> + if (f2fs_compressed_file(inode)) {
> + size_t cluster_size = PAGE_SIZE <<
> + F2FS_I(inode)->i_log_cluster_size;
> +
> + free_from = roundup(from, cluster_size);
This is a 64-by-32 or 64-by-64 division, causing a link failure on
32-bit platforms:
fs/f2fs/file.o: In function `f2fs_truncate_blocks':
file.c:(.text+0x1db4): undefined reference to `__udivdi3'
Please use DIV_ROUND_UP_ULL() instead.
Reported-by: <noreply@xxxxxxxxxxxxxx>
> + }
> +
> + return do_truncate_blocks(inode, free_from, lock);
> +}
Gr{oetje,eeting}s,
Geert
--
Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@xxxxxxxxxxxxxx
In personal conversations with technical people, I call myself a hacker. But
when I'm talking to journalists I just say "programmer" or something like that.
-- Linus Torvalds
