Re: [PATCH v3 05/10] iov_iter: Create a function to prepare userspace VM for UBUF/IOVEC tests

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Linus Torvalds <torvalds@xxxxxxxxxxxxxxxxxxxx> wrote:

> From a quick look, what you were doing was checking that the patterns
> you set up in user space came through ok. Dammit, what's wrong with
> just using read()/write() on a pipe, or splice, or whatever. It will
> test exactly the same iov_iter thing.

I was trying to make it possible to do these tests before starting userspace
as there's a good chance that if the UBUF/IOVEC iterators don't work right
then your system can't be booted.

Anyway, if I drop patches 5, 6, 7 and 10 (ie. the ones doing stuff with UBUF
and IOVEC-type iterators), would you be okay with the rest?

David





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