Re: TAKE 972756 - Implement fallocate.

[Eric Sandeen <sandeen@xxxxxxxxxxx>]

Bhagi rathi wrote:
> File is of size 1k.  A 4k block is allocated as file-system block size is
> 4k.
>  Preallocation happened from 1k to 256k. Now, it looks to me that we have
> un-written extents from 4k to 256k. There is no guarantee that data from 1k
> to 4k is all zero'es. Fallocate is updating size.  Hence on subsequent read,
> we can get garbage from 1k to 4k and all zero'es from 4k to 256k

You've tested this and found it to be true?

-Eric

> Is the expectation here is application should take the responsibility of
> zero'ing
> data?  I still need to through fallocate requirements.