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Tue, 18 Feb 2025 14:17:08 +0000 (UTC) Received: from dovecot-director2.suse.de ([2a07:de40:b281:106:10:150:64:167]) by imap1.dmz-prg2.suse.org with ESMTPSA id 7XT4OGSWtGdJXgAAD6G6ig (envelope-from ); Tue, 18 Feb 2025 14:17:08 +0000 Message-ID: <7e8a3bfd-b857-4528-a196-f237bf6d6cb9@suse.cz> Date: Tue, 18 Feb 2025 15:17:08 +0100 MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH 3/4] tools/selftests: expand all guard region tests to file-backed Content-Language: en-US To: Lorenzo Stoakes , Andrew Morton Cc: Suren Baghdasaryan , "Liam R . Howlett" , Matthew Wilcox , "Paul E . McKenney" , Jann Horn , David Hildenbrand , linux-mm@kvack.org, linux-kernel@vger.kernel.org, Shuah Khan , linux-kselftest@vger.kernel.org, linux-api@vger.kernel.org, John Hubbard , Juan Yescas , Kalesh Singh References: 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: Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit X-Rspamd-Queue-Id: A0554140008 X-Stat-Signature: rfhu7a4iu7q6og39q4ddyewajhnyi6rh X-Rspam-User: X-Rspamd-Server: rspam10 X-HE-Tag: 1739888231-395894 X-HE-Meta: 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 vdCVvlu2 DNHSV75Rk0Z165AFdlaNtSExUJKqVMcoR7TgQzqSkG5Dk5Ju3bi4+PJ+Pnu2O05oaO0B5g3kGhG1lm4aHpae/N2Ro0nSOKYFwfqJ6/Dn37a9hBtYMXckagRegvxpcjs0Y1aZl7+hnfRrdiEduFfxcP8iflbOhZmqz8OzImEdWTCfECzWd0hPVuw0KXCM7avf4Qnq0HIbQH7kO+7jGTXZ1eGQ1OdiXIOgfaGCUh03ipFoyKbT81NyxPAg62wIgmY4Q43UEs6+QbvAbF2/SdjnLS84S+JHf5pjdY+laePlX7i4sb6ikrKMy/Mizsw== X-Bogosity: Ham, tests=bogofilter, spamicity=0.000040, 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 2/13/25 19:17, Lorenzo Stoakes wrote: > Extend the guard region tests to allow for test fixture variants for anon, > shmem, and local file files. > > This allows us to assert that each of the expected behaviours of anonymous > memory also applies correctly to file-backed (both shmem and an a file > created locally in the current working directory) and thus asserts the same > correctness guarantees as all the remaining tests do. > > The fixture teardown is now performed in the parent process rather than > child forked ones, meaning cleanup is always performed, including unlinking > any generated temporary files. > > Additionally the variant fixture data type now contains an enum value > indicating the type of backing store and the mmap() invocation is > abstracted to allow for the mapping of whichever backing store the variant > is testing. > > We adjust tests as necessary to account for the fact they may now reference > files rather than anonymous memory. > > Signed-off-by: Lorenzo Stoakes Acked-by: Vlastimil Babka