Re: [PATCH 0/7] namei: clean up retry logic in various do_* functions

[Dmitry Kadashev <dkadashev@gmail.com>]

On Mon, Jul 12, 2021 at 7:37 PM Dmitry Kadashev <dkadashev@gmail.com> wrote:
>
> Suggested by Linus in https://lore.kernel.org/io-uring/CAHk-=wh=cpt_tQCirzFZRPawRpbuFTZ2MxNpXiyUF+eBXF=+sw@mail.gmail.com/
>
> This patchset does all the do_* functions one by one. The idea is to
> move the main logic to a helper function and handle stale retries /
> struct filename cleanups outside, which makes the logic easier to
> follow.
>
> There is one minor change in the behavior: filename_lookup() /
> filename_parentat() / filename_create() do their own retries on ESTALE
> (regardless of flags), and previously they were exempt from retries in
> the do_* functions (but they *were* called on retry - it's just the
> return code wasn't checked for ESTALE). And now the retry is done on
> the upper level, and so technically it could be called a behavior
> change. Hopefully it's an edge case where an additional check does not
> matter.
>
> On top of https://lore.kernel.org/io-uring/20210708063447.3556403-1-dkadashev@gmail.com/

Since this is on top of the stuff that is going to be in the Jens' tree
only until the 5.15 merge window, I'm assuming this series should go
there as well.

-- 
Dmitry Kadashev