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Mon, 10 Mar 2025 22:29:57 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1741645798; bh=UGOEqZG0TBsIgFoJglWXM/8zRgOeUZrnHWuvRUfx1NQ=; h=Subject:From:Date:References:In-Reply-To:To:Cc:From; b=atI8AQvuKXohoHSL+SYiqmDHgeNYe2z5OvYR3rEqkNQ7rl7JvF/n6nTfUkHq0qaS2 nrUHWhU8uonAvCEmiYN98m8txOUkqO3OAlUTswCPuxQkiKwBqHofWpVo8ou8AJr2w6 /gtSmWlMwZPIwdBJ2bAHEHJQpLDDwR6b10AToZuuDwrJVa0e7SXmhVv29d+kN7AWjT BKNrE82pza+ias+TSYJMndFhcwY5CUAxnPFU30l8ycT9LL+1v0ynU0ZVdLoom/9JXc 9HqoBLZHGOMdMrhwmS7K1NBWl9iaDWyNEAE30HhzftqcrAI2OJhZg228XK+NGY9QwI JF8QwFwsUfNrg== Received: from [10.30.226.235] (localhost [IPv6:::1]) by aws-us-west-2-korg-oddjob-rhel9-1.codeaurora.org (Postfix) with ESMTP id 33CBA380AACB; Mon, 10 Mar 2025 22:30:33 +0000 (UTC) Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Subject: Re: [PATCH bpf-next] mm: Fix the flipped condition in gfpflags_allow_spinning() From: patchwork-bot+netdevbpf@kernel.org Message-Id: <174164583201.3719472.12293725364552859716.git-patchwork-notify@kernel.org> Date: Mon, 10 Mar 2025 22:30:32 +0000 References: <20250310124017.187-1-alexei.starovoitov@gmail.com> In-Reply-To: <20250310124017.187-1-alexei.starovoitov@gmail.com> To: Alexei Starovoitov Cc: bpf@vger.kernel.org, daniel@iogearbox.net, andrii@kernel.org, martin.lau@kernel.org, vbabka@suse.cz, linux-mm@kvack.org, kernel-team@fb.com X-Rspam-User: X-Rspamd-Queue-Id: 1A7C4A0016 X-Rspamd-Server: rspam03 X-Stat-Signature: r1ng4tjraqd4zni5mjdsxtmei7eo6wx5 X-HE-Tag: 1741645798-213840 X-HE-Meta: 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 4Y+8NkG/ cmSns++I5j/8duvk8qciHBz3WQmw+GX9WQSryrEqjMeR+xoicFKyrKdtmLywKSAu/AEvbBGnXiRN0THuWQcCcKRaxPo7czgoobONFhEdFskcLCb9cJ76Llo6enX9pQKnxUm/lVAmkwgp4nEwhcXX1oidKmRhD/tbqPzaOKNhhobvXQ1ZwfmbA5XdWOBZPqrmAfPj4tJ2oqAXDNnynZbywugtoEUoHlA7jzb3KKrv12QI+Gtdxv1wR9IwJ+RMZxltaKEwqpcQjOELt9qa4jd9/M+U3oOf1EEowE06Q/TbptHz5nsWN3GB5BWuV7SUiUC0YDQLtYg29LCqe6Ku48bHazJabHQttGcfo0KES0UImOZEUnFKzNNbg/OGWRzNWdY7r8Rda9EAI4/on88RQdYK/6hBwc/Zoy0O9HB/c/EGxDN8w+AmZtzgG30i0KGl85gr+5QDC/+hdMjoVw0I8reyv3ACtpBrzxISyZUo7cXQkbGQbay8= 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: Hello: This patch was applied to bpf/bpf-next.git (master) by Andrii Nakryiko : On Mon, 10 Mar 2025 13:40:17 +0100 you wrote: > From: Vlastimil Babka > > The function gfpflags_allow_spinning() has a bug that makes it return > the opposite result than intended. This could contribute to deadlocks as > usage profilerates, for now it was noticed as a performance regression > due to try_charge_memcg() not refilling memcg stock when it could. Fix > the flipped condition. > > [...] Here is the summary with links: - [bpf-next] mm: Fix the flipped condition in gfpflags_allow_spinning() https://git.kernel.org/bpf/bpf-next/c/157a50236c30 You are awesome, thank you! -- Deet-doot-dot, I am a bot. https://korg.docs.kernel.org/patchwork/pwbot.html