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ETHY4R9jnUwTXYfKR/CjXBnpKjBsCXasZj9ZvSlCuzwUYcr9U2qqvcrPR55bvITYCJVuukRE6wi5VBZyQ/xkSzRE/22zTE1+oevIQJAZAW/1dsQAUSmi3XlLVmXSb4apblyIeYQIQsTtycopa53Y4b0i0hM6f0FQ5VRMhElfFywUwtWclt39g5ReFpE4dM0qmFyQEfgjCp31e9z6WTzDvL6Buytwkwwa357qHVW9S3GwnftAU0qbzkPZVL/J/ZszVezaKI/SrnOjGO9WoNJsXjpgKG9e98PnF9IFFvE4Isf+9OGFSnoLnRMGQHz5brIequ2bh2p7PODXEm0In3Qt3pGR4XL/oxQh+Z+1H2VI6KOPHJsDMNcfVr2rlPwgppgwfwys3ndKxYPZLPMcmVKwSnzB+a21IB0lc4AbUJrkasMilkCFaKeVeCgIzj1mdXKmlqun5 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: hi, Yu Zhao, On Wed, Jul 10, 2024 at 12:22:40AM -0600, Yu Zhao wrote: > On Mon, Jul 8, 2024 at 11:11 PM kernel test robot wrote: > > > > Hello, > > > > kernel test robot noticed a -34.3% regression of vm-scalability.throughput on: > > > > > > commit: 875fa64577da9bc8e9963ee14fef8433f20653e7 ("mm/hugetlb_vmemmap: fix race with speculative PFN walkers") > > This is likely caused by synchronize_rcu() wandering into the > allocation path. I'll patch that up soon. > we noticed this commit has already been merged into mainline [bd225530a4c717714722c3731442b78954c765b3] mm/hugetlb_vmemmap: fix race with speculative PFN walkers branch: linus/master and the regression still exists in our tests. do you want us to test your patch? Thanks!