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Thu, 26 Mar 2026 18:50:57 -0700 (PDT) MIME-Version: 1.0 References: <20260326140554.191996-1-hao.ge@linux.dev> <20260326181145.35b559956a45b0efdc9c0450@linux-foundation.org> <20260326183420.bbcbef02b8d2f3dedc4c4980@linux-foundation.org> In-Reply-To: <20260326183420.bbcbef02b8d2f3dedc4c4980@linux-foundation.org> From: Suren Baghdasaryan Date: Thu, 26 Mar 2026 18:50:46 -0700 X-Gm-Features: AQROBzCP8BlRhhoQzajGaOj3_f-ZeZTnp7vIy22wo3F4-gydOIQVnTZe_yyrMlA Message-ID: Subject: Re: [PATCH v2] mm/alloc_tag: clear codetag for pages allocated before page_ext initialization To: Andrew Morton Cc: Hao Ge , Kent Overstreet , linux-mm@kvack.org, linux-kernel@vger.kernel.org Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable X-Rspamd-Server: rspam12 X-Stat-Signature: hoytif3i8zdt9chwarxuwq47x8rstogc X-Rspamd-Queue-Id: 27FAF160006 X-Rspam-User: X-HE-Tag: 1774576258-21522 X-HE-Meta: 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 JpHU2Kb0 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 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: List-Subscribe: List-Unsubscribe: On Thu, Mar 26, 2026 at 6:34=E2=80=AFPM Andrew Morton wrote: > > On Thu, 26 Mar 2026 18:19:56 -0700 Suren Baghdasaryan = wrote: > > > > > > > Do people use CONFIG_MEM_ALLOC_PROFILING_DEBUG much? Is a backport > > > really needed? > > > > IMO backport would be good. > > OK, thanks, I'll slap a cc:stable on it and keep it in the 7.1.rc1 queue. > > I added > > "This bug occurs when CONFIG_MEM_ALLOC_PROFILING_DEBUG=3Dy." > > somewhere in the changelog but that's pretty lame and could be expanded > upon in a respin. > > > > > > > Either way, it seems that this isn't a very urgent issue so I'm > > > inclined to add it to the 7.1-rc1 pile, perhaps with a cc:stable. > > > > > > Please all share your thoughts with me, thanks. > > > > I'm reviewing and testing the patch and there is a race and a couple > > of smaller issues. I'll post a reply later today. > > Cool. I was going to keep it in there for mm-new testing (which is > light). But I guess there isn't much value in this so I'll drop v2. > > Sashiko had a bunch of nags, but I think you're checking that routinely? > https://sashiko.dev/#/patchset/20260326140554.191996-1-hao.ge%40linux.dev Yep. Plus I finally got Sashiko to run on my local machine, so I will give it a spin on my fixes before posting my reply.