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Wed, 21 Apr 2021 14:17:14 -0700 (PDT) MIME-Version: 1.0 References: <20210401181741.168763-1-surenb@google.com> <20210421210517.GA6404@xz-x1> In-Reply-To: <20210421210517.GA6404@xz-x1> From: Suren Baghdasaryan Date: Wed, 21 Apr 2021 14:17:03 -0700 Message-ID: Subject: Re: [PATCH 0/5] 4.14 backports of fixes for "CoW after fork() issue" To: Peter Xu Cc: Linus Torvalds , Mikulas Patocka , Vlastimil Babka , stable , Greg Kroah-Hartman , Jann Horn , Kirill Tkhai , Shaohua Li , Nadav Amit , Linux-MM , Linux Kernel Mailing List , Android Kernel Team , Andrea Arcangeli , David Hildenbrand , Jason Gunthorpe Content-Type: text/plain; charset="UTF-8" X-Stat-Signature: fa3ow4rprbqb9wprrn5958i5sbd8j6hh X-Rspamd-Server: rspam04 X-Rspamd-Queue-Id: C0C1CA000398 Received-SPF: none (google.com>: No applicable sender policy available) receiver=imf23; identity=mailfrom; envelope-from=""; helo=mail-yb1-f182.google.com; client-ip=209.85.219.182 X-HE-DKIM-Result: pass/pass X-HE-Tag: 1619039833-514378 X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: On Wed, Apr 21, 2021 at 2:05 PM Peter Xu wrote: > > Hi, Suren, > > On Wed, Apr 21, 2021 at 01:01:34PM -0700, Suren Baghdasaryan wrote: > > Peter, you mentioned https://lkml.org/lkml/2020/8/10/439 patch to > > distinguish real writes vs enforced COW read requests, however I also > > see that you had a later version of this patch here: > > https://lore.kernel.org/patchwork/patch/1286506/. Which one should I > > backport? Or is it not needed in the absence of uffd-wp support in the > > earlier kernels? > > Sorry I have no ability to evaluate the rest... but according to Linus's > previous reply, my understanding is that it is not needed, not to mention it's > not upstreamed too. Thanks! Then I'll send the backports for 17839856fd58 alone and if more backports are needed I'll post followup patches. Cheers, Suren. > > Thanks, > > -- > Peter Xu > > -- > To unsubscribe from this group and stop receiving emails from it, send an email to kernel-team+unsubscribe@android.com. >