Re: [PATCH 2/5] vfs: create a generic checking function for FS_IOC_FSSETXATTR

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On Wed, Jun 26, 2019 at 08:35:42AM -0700, Darrick J. Wong wrote:
> > static inline void simple_fill_fsxattr(struct fsxattr *fa, unsigned xflags)
> > {
> > 	memset(fa, 0, sizeof(*fa));
> > 	fa->fsx_xflags = xflags;
> > }
> > 
> > and let the compiler optimize the crap out?
> 
> The v2 series used to do that, but Christoph complained that having a
> helper for a two-line memset and initialization was silly[1] so now we
> have this version.
> 
> I don't mind reinstating it as a static inline helper, but I'd like some
> input from any of the btrfs developers (or you, Al) about which form is
> preferred.

I complained having that helper in btrfs.  I think Al wants a generic
one, which at least makes a little more sense.

That being said I wonder if we should lift these attr ioctls to
file op methods and deal with all that crap in VFS code instead of
having all those duplicated ioctl parsers.



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