On Tue, Mar 12, 2013 at 10:14:20PM -0400, Theodore Ts'o wrote:
> Oh, now I see my confusion. You're talking about retval being
> different from the output of map->m_len. I was talking about retval
> being often different from the *input* value of map->m_len.
Ah, sorry for my bad expression. :-(
>
> I agree that the output of ext4_ext_map_blocks() and
> ext4_ind_map_blocks() should be the same as map->m_len, and having a
> BUG_ON there would make sense. But we can save those changes for
> after -rc3 as a cleanup....
Actually, in my tree I use a WARN_ON() because I don't want to throw a
kernel panic for user. I think it is too unfriendly. I will send a
patch to change it after -rc3.
Regards,
- Zheng
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