Re: [RFC] ext3 freeze feature

[Christoph Hellwig <hch@lst.de>]

On Fri, Jan 25, 2008 at 09:42:30PM +0900, Takashi Sato wrote:
> Hi,
> 
> >I am also wondering whether we should have system call(s) for these:
> >
> >On Jan 25, 2008 12:59 PM, Takashi Sato <t-sato@yk.jp.nec.com> wrote:
> >>+       case EXT3_IOC_FREEZE: {
> >
> >>+       case EXT3_IOC_THAW: {
> >
> >And just convert XFS to use them too?
> 
> I think it is reasonable to implement it as the generic system call, as you 
> said.
> Does XFS folks think so?

Given that XFS has implemented the ioctls for such a long time it might
make more sense to simply move the ioctl implementation to fs/ioctl.c
so it applies to all filesystem.  No need to add a new syscall when the
equivalent-functionality ioctls have to be supported forever anyway.