RE: [PATCH v8 1/4] fat: add fat_fallocate operation

[Namjae Jeon <namjae.jeon@samsung.com>]

> 
> On Wed, Dec 10, 2014 at 07:42:16PM +0900, Namjae Jeon wrote:
> > User have to call fallocate again if opening file after close().
> > And fallocate() will skip allocation if fallocated blocks is avaiable.
> > Instead, It gurrantee to be available fallocated blocks between open
> > and close(). And I updated such limitation of fat fallocate in
> > Documentation.
> 
> Documentation doesn't help, this breaks application exposed semantics.
> 
> If you think there is a use case for non-persistant preallocations
> please propose a new fallocate flag for it, or given the lack of use
> case probably just add a fat specific ioctl instead.
Hi Christoph,
Yes, There are use cases from me and samba team also.
And it is fat's specific limitation. so looks better to add ioctl.

Thanks.