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Thu, 4 Apr 2024 07:15:16 +0000 (UTC) Received: from dovecot-director2.suse.de ([2a07:de40:b281:106:10:150:64:167]) by imap2.dmz-prg2.suse.org with ESMTPSA id K68YI4RTDmZ8dQAAn2gu4w (envelope-from ); Thu, 04 Apr 2024 07:15:16 +0000 Message-ID: <7c852583-3b87-4acb-ae1d-2065daf16984@suse.cz> Date: Thu, 4 Apr 2024 09:15:16 +0200 MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH v4 0/4] page_owner: Fix refcount imbalance and print fixup Content-Language: en-US To: Oscar Salvador , Andrew Morton Cc: linux-kernel@vger.kernel.org, linux-mm@kvack.org, Michal Hocko , Marco Elver , Andrey Konovalov , Alexander Potapenko , Alexandre Ghiti References: <20240404070702.2744-1-osalvador@suse.de> From: Vlastimil Babka Autocrypt: addr=vbabka@suse.cz; keydata= xsFNBFZdmxYBEADsw/SiUSjB0dM+vSh95UkgcHjzEVBlby/Fg+g42O7LAEkCYXi/vvq31JTB KxRWDHX0R2tgpFDXHnzZcQywawu8eSq0LxzxFNYMvtB7sV1pxYwej2qx9B75qW2plBs+7+YB 87tMFA+u+L4Z5xAzIimfLD5EKC56kJ1CsXlM8S/LHcmdD9Ctkn3trYDNnat0eoAcfPIP2OZ+ 9oe9IF/R28zmh0ifLXyJQQz5ofdj4bPf8ecEW0rhcqHfTD8k4yK0xxt3xW+6Exqp9n9bydiy tcSAw/TahjW6yrA+6JhSBv1v2tIm+itQc073zjSX8OFL51qQVzRFr7H2UQG33lw2QrvHRXqD Ot7ViKam7v0Ho9wEWiQOOZlHItOOXFphWb2yq3nzrKe45oWoSgkxKb97MVsQ+q2SYjJRBBH4 8qKhphADYxkIP6yut/eaj9ImvRUZZRi0DTc8xfnvHGTjKbJzC2xpFcY0DQbZzuwsIZ8OPJCc LM4S7mT25NE5kUTG/TKQCk922vRdGVMoLA7dIQrgXnRXtyT61sg8PG4wcfOnuWf8577aXP1x 6mzw3/jh3F+oSBHb/GcLC7mvWreJifUL2gEdssGfXhGWBo6zLS3qhgtwjay0Jl+kza1lo+Cv BB2T79D4WGdDuVa4eOrQ02TxqGN7G0Biz5ZLRSFzQSQwLn8fbwARAQABzSBWbGFzdGltaWwg QmFia2EgPHZiYWJrYUBzdXNlLmN6PsLBlAQTAQoAPgIbAwULCQgHAwUVCgkICwUWAgMBAAIe AQIXgBYhBKlA1DSZLC6OmRA9UCJPp+fMgqZkBQJkBREIBQkRadznAAoJECJPp+fMgqZkNxIQ ALZRqwdUGzqL2aeSavbum/VF/+td+nZfuH0xeWiO2w8mG0+nPd5j9ujYeHcUP1edE7uQrjOC Gs9sm8+W1xYnbClMJTsXiAV88D2btFUdU1mCXURAL9wWZ8Jsmz5ZH2V6AUszvNezsS/VIT87 AmTtj31TLDGwdxaZTSYLwAOOOtyqafOEq+gJB30RxTRE3h3G1zpO7OM9K6ysLdAlwAGYWgJJ V4JqGsQ/lyEtxxFpUCjb5Pztp7cQxhlkil0oBYHkudiG8j1U3DG8iC6rnB4yJaLphKx57NuQ PIY0Bccg+r9gIQ4XeSK2PQhdXdy3UWBr913ZQ9AI2usid3s5vabo4iBvpJNFLgUmxFnr73SJ KsRh/2OBsg1XXF/wRQGBO9vRuJUAbnaIVcmGOUogdBVS9Sun/Sy4GNA++KtFZK95U7J417/J Hub2xV6Ehc7UGW6fIvIQmzJ3zaTEfuriU1P8ayfddrAgZb25JnOW7L1zdYL8rXiezOyYZ8Fm ZyXjzWdO0RpxcUEp6GsJr11Bc4F3aae9OZtwtLL/jxc7y6pUugB00PodgnQ6CMcfR/HjXlae h2VS3zl9+tQWHu6s1R58t5BuMS2FNA58wU/IazImc/ZQA+slDBfhRDGYlExjg19UXWe/gMcl De3P1kxYPgZdGE2eZpRLIbt+rYnqQKy8UxlszsBNBFsZNTUBCACfQfpSsWJZyi+SHoRdVyX5 J6rI7okc4+b571a7RXD5UhS9dlVRVVAtrU9ANSLqPTQKGVxHrqD39XSw8hxK61pw8p90pg4G /N3iuWEvyt+t0SxDDkClnGsDyRhlUyEWYFEoBrrCizbmahOUwqkJbNMfzj5Y7n7OIJOxNRkB IBOjPdF26dMP69BwePQao1M8Acrrex9sAHYjQGyVmReRjVEtv9iG4DoTsnIR3amKVk6si4Ea X/mrapJqSCcBUVYUFH8M7bsm4CSxier5ofy8jTEa/CfvkqpKThTMCQPNZKY7hke5qEq1CBk2 wxhX48ZrJEFf1v3NuV3OimgsF2odzieNABEBAAHCwXwEGAEKACYCGwwWIQSpQNQ0mSwujpkQ PVAiT6fnzIKmZAUCZAUSmwUJDK5EZgAKCRAiT6fnzIKmZOJGEACOKABgo9wJXsbWhGWYO7mD 8R8mUyJHqbvaz+yTLnvRwfe/VwafFfDMx5GYVYzMY9TWpA8psFTKTUIIQmx2scYsRBUwm5VI EurRWKqENcDRjyo+ol59j0FViYysjQQeobXBDDE31t5SBg++veI6tXfpco/UiKEsDswL1WAr tEAZaruo7254TyH+gydURl2wJuzo/aZ7Y7PpqaODbYv727Dvm5eX64HCyyAH0s6sOCyGF5/p eIhrOn24oBf67KtdAN3H9JoFNUVTYJc1VJU3R1JtVdgwEdr+NEciEfYl0O19VpLE/PZxP4wX PWnhf5WjdoNI1Xec+RcJ5p/pSel0jnvBX8L2cmniYnmI883NhtGZsEWj++wyKiS4NranDFlA HdDM3b4lUth1pTtABKQ1YuTvehj7EfoWD3bv9kuGZGPrAeFNiHPdOT7DaXKeHpW9homgtBxj 8aX/UkSvEGJKUEbFL9cVa5tzyialGkSiZJNkWgeHe+jEcfRT6pJZOJidSCdzvJpbdJmm+eED w9XOLH1IIWh7RURU7G1iOfEfmImFeC3cbbS73LQEFGe1urxvIH5K/7vX+FkNcr9ujwWuPE9b 1C2o4i/yZPLXIVy387EjA6GZMqvQUFuSTs/GeBcv0NjIQi8867H3uLjz+mQy63fAitsDwLmR EP+ylKVEKb0Q2A== In-Reply-To: <20240404070702.2744-1-osalvador@suse.de> Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit X-Rspamd-Pre-Result: action=no action; module=replies; Message is reply to one we originated X-Rspamd-Action: no action X-Rspam-User: X-Stat-Signature: z3k16bxf6zchnyhcg9nne871tsrfectk X-Rspamd-Server: rspam07 X-Rspamd-Queue-Id: 0CF09C001E X-HE-Tag: 1712214917-171178 X-HE-Meta: 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 NyIfs2Z1 dQZmSXNl03t/PqjToLIG1y9YndRnnIER8QJ3+HPjGGM6KHiJHTBfI4+sQm40lXGuDILUrg/0H5RG9NYB5xuHMzLU8OkM1BaCI6X3GSgAyw3XUCez7DZWiC1UlS85sMs3udjI5SdiFqX6chSwM04xriWQndS3M15ZkPB7QS1xQaPZXQtO24Yi91KalqnZEPTlKt/99mh1rM3gIkaQ= 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: List-Subscribe: List-Unsubscribe: On 4/4/24 9:06 AM, Oscar Salvador wrote: > This series consists of a refactoring/correctness of updating the metadata > of tail pages, a couple of fixups for the refcounting part and a fixup for > the stack_start() function. > > From this series on, instead of counting the stacks, we count the outstanding > nr_base_pages each stack has, which gives us a much better memory overview. > The other fixup is for the migration part. > > A more detailed explanation can be found in the changelog of the respective > patches. It's best to be explicit that this fixes issues in 6.9-rc1 and thus should be in mm-hotfixes(-unstable). Also you can use e.g. [PATCH mm-hotfixes] prefix to that effect next time. > v3 -> v4: > - Fix some typos remarked by Vlastimil > - Add Reviewed-by tag from Vlastimil and Tested-by tag from Alexandre Ghiti > (closed a syzbot report for RISC) > > Oscar Salvador (4): > mm,page_owner: Update metadata for tail pages > mm,page_owner: Fix refcount imbalance > mm,page_owner: Fix accounting of pages when migrating > mm,page_owner: Fix printing of stack records > > Documentation/mm/page_owner.rst | 73 +++++++------ > mm/page_owner.c | 188 ++++++++++++++++++-------------- > 2 files changed, 147 insertions(+), 114 deletions(-) >