Re: [PATCH 1/4] iov_iter: add copy_to_iter_full()

Jens Axboe
2024-04-09T17:10:41Z

On 4/9/24 11:06 AM, Al Viro wrote:
> On Tue, Apr 09, 2024 at 09:22:15AM -0600, Jens Axboe wrote:
>> Add variant of copy_to_iter() that either copies the full amount asked
>> for and return success, or ensures that the iov_iter is back to where
>> it started on failure and returns false.
>
> FWIW, see git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs.git #work.iov_iter
>
> There was an open-coded instance (skb_copy_linear()) that I'd converted to
> that helper in the same commit; I can split it, of course, but I don't
> see much point in that.

No reason to split it, I'll have a dependency regardless. I'll just pull
your branch in, so ignore patch 1 here, 2-4 will remain the same.

--
Jens Axboe