Re: [PATCH 2/3] VFS: swap do_ioctl and vfs_ioctl names

[Christoph Hellwig]

On Sat, Oct 27, 2007 at 07:10:44PM -0400, Erez Zadok wrote:
> Rename old vfs_ioctl to do_ioctl, because the comment above it clearly
> indicates that it is an internal function not to be exported to modules;
> therefore it should have a more traditional do_XXX name.  The new do_ioctl
> is exported in fs.h but not to modules.
> 
> Rename the old do_ioctl to vfs_ioctl because the names vfs_XXX should
> preferably be reserved to callable VFS functions which modules may call,
> as many other vfs_XXX functions already do.

Yes, good idea for consistency.

> Export the new vfs_ioctl to
> modules so others can use it (including Unionfs and eCryptfs).

> +EXPORT_SYMBOL(vfs_ioctl);

This should be an _GPL export.  All new exports for above VFS users
like NFSD or stackable filesystem are _GPL because they're not for
general consumptions but these rather specific tied to the kernel
uses.

And while you're at it I'd suggest adding a docbook comment describing
the new export vfs_ioctl because we'd eventually like to have the exported
API documented fully.
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