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b=LrGgn3Ox5ZGIvBqqowkgjurDUzsmCXxB1b5uzzxiy8ZLH/hepOR/vZa1NGtteFl7L mUQTd+pjUqqVTGu72dUfFT9UGI5ZhoUs4NF0L8tpLntIM9NLIbOrpUIie7FCiOPrTf pKqKx3G/RqSlie0EZWHLy6N9ntkJYHRu3DCv2P2O4Tw9VCneL6ckZUs2qw86zUZ6SO hp35Y1hKpeEGUT6DFHM24oJmowltxQap32QzFKAsTaWYosO7aofUCYY4OfZNVdMMkr 0eMqzHPHNEBTEtuWwwd481k3lk0fkN7663OCPUYnDdvbhw/ZlymZO3V/ewc2TPcjhf 16jJhr2BzjAjQ== Message-ID: Date: Fri, 8 May 2026 12:57:24 +0200 MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH v2] mm/balloon: expose per-node balloon pages in node meminfo To: Hao Ge , Andrew Morton Cc: linux-mm@kvack.org, virtualization@lists.linux.dev, linux-kernel@vger.kernel.org References: <20260508094736.142467-1-hao.ge@linux.dev> 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: <20260508094736.142467-1-hao.ge@linux.dev> Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit X-Rspam-User: X-Rspamd-Server: rspam10 X-Rspamd-Queue-Id: 03330C000E X-Stat-Signature: hxiftasz9pdyu3sk3p4yj6yimxpgt6fw X-HE-Tag: 1778237848-542980 X-HE-Meta: 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 CR82CS5N TyMg0rPwTCOqxpLrjBFOXxPPa0/JeeV+Ht6eanhOwLQwL35EhFMZ2A8eSSwE4GSjqolt5JwhNY2+/E5ARnnB7z1fIOIdyPf20VBIDTXSUps8Yn6yd2nw0HUN8VKI3gFn0Ee2f30rFzyct5aPwKa+SGmpjjMwNQIu3BdyLhE+GT2HaO6JpXuaWzHQtdibeZwoCG7AIFS2zDciaivC+bSHikH6ka3Svw+kp7f6L/hjo+NOub85URZKSL7iIGqnmvUuLmk27QqEpLJfcXi5COTPVqerrkw== Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: List-Subscribe: List-Unsubscribe: On 5/8/26 11:47, Hao Ge wrote: > Commit 835de37603ef ("meminfo: add a per node counter for balloon > drivers") added NR_BALLOON_PAGES and exposed it in /proc/meminfo. > However, the per-node view at /sys/devices/system/node/nodeX/meminfo > was not updated, even though the counter is already tracked per-node. > > Add it to node_read_meminfo() so users can see balloon usage per > NUMA node without having to parse the raw vmstat file. > > Signed-off-by: Hao Ge > --- Patch subject should not start with "mm/balloon:". "proc/meminfo: " might be the better choice. Likely can be changed when picking up Acked-by: David Hildenbrand (Arm) -- Cheers, David