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b=GNr35sdMl8L0pN7iIvRepKjYtv/5tv0fDmU1kyIXm4XoTDCjiW0oVsLh+U/pbn40a eZiZcZ4kEozF+jGgwN1JryENR26NyBhp7PnNo7CcK8AhAOUERG5q0kI9VtXyP0dqwp wUqL6k4RqU19aNN1SzcMbQpmmDcr+qC9EKICQ/rw= Date: Tue, 26 May 2026 12:09:13 -0700 From: Andrew Morton To: Lorenzo Stoakes Cc: "David Hildenbrand (Arm)" , Nico Pache , "Vlastimil Babka (SUSE)" , linux-kernel@vger.kernel.org, linux-mm@kvack.org, liam@infradead.org, mhocko@suse.com, rppt@kernel.org, vbabka@suse.cz, willy@infradead.org Subject: Re: Process (was Re: [PATCH mm-hotfixes-unstable v18 00/14] khugepaged: add mTHP) collapse support Message-Id: <20260526120913.937a4d483af214ad050166dc@linux-foundation.org> In-Reply-To: References: <20260522150009.121603-1-npache@redhat.com> X-Mailer: Sylpheed 3.8.0beta1 (GTK+ 2.24.33; x86_64-pc-linux-gnu) Mime-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit X-Stat-Signature: et448i4acp61swgr7ekmwx4a5ikfemfc X-Rspamd-Queue-Id: E569120003 X-Rspam-User: X-Rspamd-Server: rspam10 X-HE-Tag: 1779822554-770087 X-HE-Meta: U2FsdGVkX1+b5KwJ8nJ/y5bJOpu7Su7qEqYATSU5G25zmZ4CaemfHtAs54v8hyefXp7RhM/p2CpM113fAye4E3BQuPw2qkxjqQ1GO9yfuHX6Vvk+mdoqQUVcl8jgTWyIq8N/JDvC88lrWTrpMMTN0qtkA9BoGDSHym9dwjGzmKhliAbHzqBKSG3JnT0KZ1s6UEFdSuLC0X84Gocd6u+Lh27vS3XMXpolWJzUc5KrazrJ8m1+dHlxsqpoU5Ek+cz+UeRpd1QkBx1oVsM2PJjLGqsutCYJBDUzOrK/mV3IMTP7Og+nc2jxXb5aQi0JL+d5vHjNk3XE+zTBMA5OGqDF+n8Ah6ctnhZsJ/SEiZhwIECKywsvWAY+5YhL++uL+Ktce+WvnJHrlqLTqxwsj9UrJJTEY6mvmYbmQ98kgJu2QrDnIPKwRnCAm0RDpD1Mp5Ey54K/qHwyh8hp4zeRBV1nwNcoDOKQc78C5u/ZBq6a6p9dDxIBn2LBetXh4PRXIxISY+WEM1iZW+ZPOj5fS6uRQGnI55uSyNT5S8SpgPh2bbQxVQKCz29e1HvpdsjG0zBvk/XTcs6cuHPGLHBLpJcYfyIV4WhhWmoWrQro56qtjT7YRC5wMcuooBbJlY3TVOIZDOWSdkuYFEYHvYxnOPv7TqNxu7A0HFdCXoieccKx4q2woi57fT9Jn8vpuKlkeBUKvjZDJN5o7z++ZQ7n167My3+0Ac+FfBjT2uMOheN83tA6mXu0ID1C0VA2l5NocsbVzVurepam7idrbT9b4FGb6j3T44nQQUGu08cM1cP3Hz7tWFUe2n1A23mjlw9XoGABH1ao62UeZ5F8bFeLytvC0bwUyr4ikbiubCS4PjoP1XmjfVSVFl9RAHjejirw1xz/VAmLQeZ5Zx+HTUykSspG3ZUCy5bRzY6R+uTWdFgS3g7aOMQHZwqNlE+3EloqqYTXf8SAhjUhmB2BXw8rvwg cBnJHCvC M0X8ryCsX72XsFq/RpE19cl9lckbe0ANQ2LrsNpSjJ8Q0zbzT4Nh4EBqWHiBvO5ykrzEeLdDtH0gp7g+mi0eu2fmklZKq9rCzuytzmIt9yATKak5YKK5YeRvMFdpo2WtUB5g93qEzQz10A5VNhZyN/7bsHRR80twuLQtzfmhaD1tRAUspt4TUgTUGrC/6PPK1IP9iA88+Cs9JNP8yVM4v7cwez0tP3EN38lnTXIUUOsoXJ/aCB8S+wr8atQ6jPlpGXppDQpW3ZLHX8UsXDf91cI1xJpC7vWPl5jxvWLdCSFQbHzk= Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: List-Subscribe: List-Unsubscribe: On Tue, 26 May 2026 09:33:08 +0100 Lorenzo Stoakes wrote: > [trimmed cc list to avoid noise, apologies if I excluded anybody who is > interested in this!] > > On Fri, May 22, 2026 at 11:13:42PM +0200, David Hildenbrand (Arm) wrote: > > On 5/22/26 18:11, Nico Pache wrote: > > > On Fri, May 22, 2026 at 9:13 AM Vlastimil Babka (SUSE) > > > wrote: > > >> > > >> On 5/22/26 17:07, Nico Pache wrote: > > >>> > > >>> Whoops I manually changed the coverletter subject to reflect that this > > >>> in on mm-hotfixes-unstable but never updated the others... > > >> > > >> But why? That branch is for hotfixes that would go to the current 7.1-rcX > > >> series. mm-unstable would be the correct one for this, AFAICT. > > > > > > Sorry this was a misunderstanding. The goal here was to base this off > > > the closest base commit behind where my v17 already lies in the tree. > > > > Ah, I guess this is a problem of "v17 is already in mm-unstable, so against what > > to base v18". > > > > Yeah, we touched on that problem in the LSF/MM process discussion ... > > I may be misremembering but... :) [correct me if wrong]: > > Wasn't the general conclusion that we maintain a stable branch (Linus's tree + > stuff that's been reviewed and is locked in for next release), and have people > base work against that? That was the plan when I initially set up the mm.git branches. It turned out to be quite impractical because it takes so long to get material into mm-stable worthiness: around -rc4/-rc5. We could address that by delaying everything by four weeks - so MM's window is out of phase with Linus's. So there's a lot of "stable" material in mm.git when Linus is at -rc1/-rc2. Problem with this is that by -rc5/-rc6 we'll have a large amount of material queued up for the next -rc cycle and it is against linux-next rules to add this to -next. And until it's had decent -next exposure we can't declare it "stable". This needs a diagram ;)