Re: [RFC PATCH v2 2/2] fs/task_mmu: acquire mmap_lock for write on soft-dirty cleanup

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To: Andrea Arcangeli <aarcange@xxxxxxxxxx>
Subject: Re: [RFC PATCH v2 2/2] fs/task_mmu: acquire mmap_lock for write on soft-dirty cleanup
From: Peter Xu <peterx@xxxxxxxxxx>
Date: Tue, 5 Jan 2021 16:55:28 -0500
Cc: Nadav Amit <namit@xxxxxxxxxx>, linux-mm <linux-mm@xxxxxxxxx>, lkml <linux-kernel@xxxxxxxxxxxxxxx>, Yu Zhao <yuzhao@xxxxxxxxxx>, Andy Lutomirski <luto@xxxxxxxxxx>, Pavel Emelyanov <xemul@xxxxxxxxxx>, Mike Kravetz <mike.kravetz@xxxxxxxxxx>, Mike Rapoport <rppt@xxxxxxxxxxxxxxxxxx>, Minchan Kim <minchan@xxxxxxxxxx>, Will Deacon <will@xxxxxxxxxx>, Peter Zijlstra <peterz@xxxxxxxxxxxxx>
In-reply-to: <X/TOhyzggcBL64N2@redhat.com>
References: <20201225092529.3228466-1-namit@vmware.com> <20201225092529.3228466-3-namit@vmware.com> <X/SuBxFfR+bncRhU@redhat.com> <15758743-B8E3-48C4-A13B-DFFEBF8AF435@vmware.com> <X/TOhyzggcBL64N2@redhat.com>

On Tue, Jan 05, 2021 at 03:39:35PM -0500, Andrea Arcangeli wrote:
> I'd suggest to coordinate with Peter on that, since I wasn't planning
> to work on this if somebody else offered to do it.

Thanks, Andrea.  Nadav, please go ahead with whatever patch(es) in your mind.
Please let me know if you prefer me to do it, or I'll wait for your new version.

Thanks,

-- 
Peter Xu

References:
- [RFC PATCH v2 0/2] mm: fix races due to deferred TLB flushes
  - From: Nadav Amit
- [RFC PATCH v2 2/2] fs/task_mmu: acquire mmap_lock for write on soft-dirty cleanup
  - From: Nadav Amit
- Re: [RFC PATCH v2 2/2] fs/task_mmu: acquire mmap_lock for write on soft-dirty cleanup
  - From: Andrea Arcangeli
- Re: [RFC PATCH v2 2/2] fs/task_mmu: acquire mmap_lock for write on soft-dirty cleanup
  - From: Nadav Amit
- Re: [RFC PATCH v2 2/2] fs/task_mmu: acquire mmap_lock for write on soft-dirty cleanup
  - From: Andrea Arcangeli

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