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b=WtcIVtCGHBl1NcntUgJvu6bB7mYQhrurEPWuJ5Nfm6UXAy76S61lSrtxXezQny3Ur XV70aHvWJVEY/ZhAPrzqUJOj1yJ5UhLkBN3O0/umzhVZ+VR9w+IuEFIfv/1KqkTXkV 8LZ9AYzVP09P8JgODMXujSpDZ/8Pza6T3j1Vv3FyEXXAqxevWGsMrKl50yMHeTE1Mi jZSK0tL6abMUAN5fBtHb90I/qyCKgcHXjjliVVY/IShDU4w8rnSmFgo/E0x4qLLjZP sIqs9AZmmi0uBwwQqNDgLqP88XI+y+IJnK0HzpluS0JmWYq5PKCoiSCRbW/HlxIQ46 0/7aCI4q8omhw== Message-ID: Date: Tue, 2 Jun 2026 14:58:57 +0200 MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: Process (was Re: [PATCH mm-hotfixes-unstable v18 00/14] khugepaged: add mTHP) collapse support To: "Vlastimil Babka (SUSE)" , Lorenzo Stoakes Cc: Nico Pache , akpm@linux-foundation.org, linux-kernel@vger.kernel.org, linux-mm@kvack.org, liam@infradead.org, mhocko@suse.com, rppt@kernel.org, vbabka@suse.cz, willy@infradead.org References: <20260522150009.121603-1-npache@redhat.com> <506fed6b-8954-40fa-8b5e-c8bd8c0d004b@kernel.org> From: "David Hildenbrand (Arm)" Content-Language: en-US Autocrypt: addr=david@kernel.org; keydata= xsFNBFXLn5EBEAC+zYvAFJxCBY9Tr1xZgcESmxVNI/0ffzE/ZQOiHJl6mGkmA1R7/uUpiCjJ dBrn+lhhOYjjNefFQou6478faXE6o2AhmebqT4KiQoUQFV4R7y1KMEKoSyy8hQaK1umALTdL QZLQMzNE74ap+GDK0wnacPQFpcG1AE9RMq3aeErY5tujekBS32jfC/7AnH7I0v1v1TbbK3Gp XNeiN4QroO+5qaSr0ID2sz5jtBLRb15RMre27E1ImpaIv2Jw8NJgW0k/D1RyKCwaTsgRdwuK Kx/Y91XuSBdz0uOyU/S8kM1+ag0wvsGlpBVxRR/xw/E8M7TEwuCZQArqqTCmkG6HGcXFT0V9 PXFNNgV5jXMQRwU0O/ztJIQqsE5LsUomE//bLwzj9IVsaQpKDqW6TAPjcdBDPLHvriq7kGjt WhVhdl0qEYB8lkBEU7V2Yb+SYhmhpDrti9Fq1EsmhiHSkxJcGREoMK/63r9WLZYI3+4W2rAc UucZa4OT27U5ZISjNg3Ev0rxU5UH2/pT4wJCfxwocmqaRr6UYmrtZmND89X0KigoFD/XSeVv jwBRNjPAubK9/k5NoRrYqztM9W6sJqrH8+UWZ1Idd/DdmogJh0gNC0+N42Za9yBRURfIdKSb B3JfpUqcWwE7vUaYrHG1nw54pLUoPG6sAA7Mehl3nd4pZUALHwARAQABzS5EYXZpZCBIaWxk ZW5icmFuZCAoQ3VycmVudCkgPGRhdmlkQGtlcm5lbC5vcmc+wsGQBBMBCAA6AhsDBQkmWAik AgsJBBUKCQgCFgICHgUCF4AWIQQb2cqtc1xMOkYN/MpN3hD3AP+DWgUCaYJt/AIZAQAKCRBN 3hD3AP+DWriiD/9BLGEKG+N8L2AXhikJg6YmXom9ytRwPqDgpHpVg2xdhopoWdMRXjzOrIKD g4LSnFaKneQD0hZhoArEeamG5tyo32xoRsPwkbpIzL0OKSZ8G6mVbFGpjmyDLQCAxteXCLXz ZI0VbsuJKelYnKcXWOIndOrNRvE5eoOfTt2XfBnAapxMYY2IsV+qaUXlO63GgfIOg8RBaj7x 3NxkI3rV0SHhI4GU9K6jCvGghxeS1QX6L/XI9mfAYaIwGy5B68kF26piAVYv/QZDEVIpo3t7 /fjSpxKT8plJH6rhhR0epy8dWRHk3qT5tk2P85twasdloWtkMZ7FsCJRKWscm1BLpsDn6EQ4 jeMHECiY9kGKKi8dQpv3FRyo2QApZ49NNDbwcR0ZndK0XFo15iH708H5Qja/8TuXCwnPWAcJ DQoNIDFyaxe26Rx3ZwUkRALa3iPcVjE0//TrQ4KnFf+lMBSrS33xDDBfevW9+Dk6IISmDH1R HFq2jpkN+FX/PE8eVhV68B2DsAPZ5rUwyCKUXPTJ/irrCCmAAb5Jpv11S7hUSpqtM/6oVESC 3z/7CzrVtRODzLtNgV4r5EI+wAv/3PgJLlMwgJM90Fb3CB2IgbxhjvmB1WNdvXACVydx55V7 LPPKodSTF29rlnQAf9HLgCphuuSrrPn5VQDaYZl4N/7zc2wcWM7BTQRVy5+RARAA59fefSDR 9nMGCb9LbMX+TFAoIQo/wgP5XPyzLYakO+94GrgfZjfhdaxPXMsl2+o8jhp/hlIzG56taNdt VZtPp3ih1AgbR8rHgXw1xwOpuAd5lE1qNd54ndHuADO9a9A0vPimIes78Hi1/yy+ZEEvRkHk /kDa6F3AtTc1m4rbbOk2fiKzzsE9YXweFjQvl9p+AMw6qd/iC4lUk9g0+FQXNdRs+o4o6Qvy iOQJfGQ4UcBuOy1IrkJrd8qq5jet1fcM2j4QvsW8CLDWZS1L7kZ5gT5EycMKxUWb8LuRjxzZ 3QY1aQH2kkzn6acigU3HLtgFyV1gBNV44ehjgvJpRY2cC8VhanTx0dZ9mj1YKIky5N+C0f21 zvntBqcxV0+3p8MrxRRcgEtDZNav+xAoT3G0W4SahAaUTWXpsZoOecwtxi74CyneQNPTDjNg azHmvpdBVEfj7k3p4dmJp5i0U66Onmf6mMFpArvBRSMOKU9DlAzMi4IvhiNWjKVaIE2Se9BY FdKVAJaZq85P2y20ZBd08ILnKcj7XKZkLU5FkoA0udEBvQ0f9QLNyyy3DZMCQWcwRuj1m73D sq8DEFBdZ5eEkj1dCyx+t/ga6x2rHyc8Sl86oK1tvAkwBNsfKou3v+jP/l14a7DGBvrmlYjO 59o3t6inu6H7pt7OL6u6BQj7DoMAEQEAAcLBfAQYAQgAJgIbDBYhBBvZyq1zXEw6Rg38yk3e EPcA/4NaBQJonNqrBQkmWAihAAoJEE3eEPcA/4NaKtMQALAJ8PzprBEXbXcEXwDKQu+P/vts IfUb1UNMfMV76BicGa5NCZnJNQASDP/+bFg6O3gx5NbhHHPeaWz/VxlOmYHokHodOvtL0WCC 8A5PEP8tOk6029Z+J+xUcMrJClNVFpzVvOpb1lCbhjwAV465Hy+NUSbbUiRxdzNQtLtgZzOV Zw7jxUCs4UUZLQTCuBpFgb15bBxYZ/BL9MbzxPxvfUQIPbnzQMcqtpUs21CMK2PdfCh5c4gS sDci6D5/ZIBw94UQWmGpM/O1ilGXde2ZzzGYl64glmccD8e87OnEgKnH3FbnJnT4iJchtSvx yJNi1+t0+qDti4m88+/9IuPqCKb6Stl+s2dnLtJNrjXBGJtsQG/sRpqsJz5x1/2nPJSRMsx9 5YfqbdrJSOFXDzZ8/r82HgQEtUvlSXNaXCa95ez0UkOG7+bDm2b3s0XahBQeLVCH0mw3RAQg r7xDAYKIrAwfHHmMTnBQDPJwVqxJjVNr7yBic4yfzVWGCGNE4DnOW0vcIeoyhy9vnIa3w1uZ 3iyY2Nsd7JxfKu1PRhCGwXzRw5TlfEsoRI7V9A8isUCoqE2Dzh3FvYHVeX4Us+bRL/oqareJ CIFqgYMyvHj7Q06kTKmauOe4Nf0l0qEkIuIzfoLJ3qr5UyXc2hLtWyT9Ir+lYlX9efqh7mOY qIws/H2t In-Reply-To: Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit X-Rspamd-Queue-Id: 450A6C0003 X-Stat-Signature: kt3814pb5dz1dfcf84a49fyh9my6u9a1 X-Rspam-User: X-Rspamd-Server: rspam12 X-HE-Tag: 1780405142-398207 X-HE-Meta: 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 UQ4n+0NE vqthwjuiTyPGo5dpNNNk0li8YG6cAJ+4ZNpOQuo8s931KAKYeCE16O2jbu4WRNFTgtNshUX8dlkW4oxMjKyMTHoK/1KT5PRT51wpzl0AwegesU7AiT3o0+iYe759EjQec4IPopy369xTWueA2A7pDsjjClqd2KlLngEEFyvs8WJClQZv5g74yqTWVu+rjip3Dy4PVVi/+BrOh9V/QNbtzcVlzIYTQN6doutks/0S7Vph1FEloSkMg+VKH27KkSeVi0cWo Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: List-Subscribe: List-Unsubscribe: On 6/2/26 14:47, Vlastimil Babka (SUSE) wrote: > On 6/2/26 13:20, David Hildenbrand (Arm) wrote: >> On 6/1/26 18:16, Lorenzo Stoakes wrote: >>> >>> Err what? The 'random' tree is the MAINTAINERS entry you are targeting, it's >>> based on the mm-next stable branch and only diverges in the work that's been >>> done specific to the subtree, what's crazy exactly? >> >> We'll still have plenty of patch sets that touch files cross trees. >> >> I don't see the problem of sending stuff against the integration tree from where >> it can just be cleanly picked up by sub-maintainers (after all, that's where all >> the subtrees were integrated against)? Or what exactly is the problem with that? > > The problem is that the patches would not be applied on top of the > integration tree, so it doesn't make sense to base them on it in the first > place. Unless they target the next cycle, where the integration tree would > first become part of rc1, which would be the new base for all the > submaintainer trees. Why does that matter? For example, the slab-next tree gets merged into the mm-next tree. Submitter will send against mm-next. The slab maintainer will cherry-pick the patches on top of slab-next. From where they end up in mm-next. In the rare event of conflicts, the base-commit ID is there and known. If it's too much of a mess, we could ask to resend against the slab-next tree. Again, TIP allows that. For example, I never based any x86/mm patch on x86/mm and ... was fine? :) -- Cheers, David