Re: [PATCH 2/3] copyfile: sendfile

[Christoph Hellwig <hch@infradead.org>]

On Sat, Sep 04, 2004 at 06:59:38PM +0200, Jörn Engel wrote:
> Creates vfs_sendfile(), which can be called from other places within
> the kernel.  Such other places include copyfile() and cowlinks.
> 
> In principle, this just removes code from do_sendfile() to
> vfs_sendfile().  On top of that, it adds a check to out_inode,
> identical to the one on in_inode.  True, the check for out_inode was
> never needed, maybe that tells you something about the check to
> in_inode as well. ;)

Both checks aren't nessecary. 

> +++ linux-2.6.9-rc1-mm3/include/linux/syscalls.h	2004-09-04 18:17:15.000000000 +0200
> @@ -285,6 +285,8 @@
>  asmlinkage long sys_unlink(const char __user *pathname);
>  asmlinkage long sys_rename(const char __user *oldname,
>  				const char __user *newname);
> +asmlinkage long sys_copyfile(const char __user *from, const char __user *to,
> +				umode_t mode);

oesn't seem to belong into this patch.