Re: [PATCH v5 00/16] mm: Page fault enhancements

[Peter Xu]

On Thu, Sep 26, 2019 at 05:38:48PM +0800, Peter Xu wrote:
> This is v5 of the series.  As Matthew suggested, I split the previous
> patch "mm: Return faster for non-fatal signals in user mode faults"
> into a few smaller ones:
> 
>   1. One patch to introduce fatal_signal_pending(), and use it in
>      archs that can directly apply
> 
>   2. A few more patches to let the rest archs to use the new helper.
>      With that we can have an unified entry for signal detection
> 
>   3. One last patch to change fatal_signal_pending() to detect
>      userspace non-fatal signal
> 
> Nothing should have changed in the rest patches.  Because the fault
> retry patches will depend on the previous ones, I decided to simply
> repost all the patches.
> 
> Here's the new patchset layout:
> 
> Patch 1-2:      cleanup, and potential bugfix of hugetlbfs on fault retry
> 
> Patch 3-9:      let page fault to respond to non-fatal signals faster
> 
> Patch 10:       remove the userfaultfd NOPAGE emulation
> 
> Patch 11-14:    allow page fault to retry more than once
> 
> Patch 15-16:    let gup code to use FAULT_FLAG_KILLABLE too
> 
> I would really appreciate any review comments for the series,
> especially for the first two patches which IMHO are even not related
> to this patchset and they should either cleanup or fix things.

Ping..

IMHO this series should fix some real issues, e.g., the whole series
targets to fix things like [1] or as patch 2 might fix potential
bugs.  I'd appreciate if it can get some more review comments.

I didn't repost because the last patch only need a one-line change so
I assume it does not affect the most rest of reviews.  I can repost if
anyone would like me to.

Thanks,

[1] https://lore.kernel.org/lkml/20171102193644.GB22686@xxxxxxxxxx/

-- 
Peter Xu