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[130.117.225.111]) by mx.google.com with ESMTPS id ffacd0b85a97d-488627bf949si3638953f8f.159.2026.09.22.06.31.29 for (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 22 Sep 2026 06:31:29 -0700 (PDT) Received-SPF: pass (google.com: domain of khorenko@virtuozzo.com designates 130.117.225.111 as permitted sender) client-ip=130.117.225.111; Authentication-Results: mx.google.com; dkim=pass header.i=@virtuozzo.com header.s=relay header.b=QpmTsZa6; spf=pass (google.com: domain of khorenko@virtuozzo.com designates 130.117.225.111 as permitted sender) smtp.mailfrom=khorenko@virtuozzo.com; dmarc=pass (p=QUARANTINE sp=QUARANTINE dis=NONE) header.from=virtuozzo.com DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=virtuozzo.com; s=relay; h=Content-Type:MIME-Version:Date:Message-Id:Subject :From; bh=OhK0m93MH/mR7b+IhoISyyh3tXVgZgD527/sN+XBQic=; b=QpmTsZa6FuuhZ63Gp14 eFCDC3OHSlnIUyOvM0+1o6P8/oFf2vjaMSDKUoa81dURzrxCMNN02FZixbli3cd3AgEMH5q0YZwNn D0TmIbRYr4E4/uQcDJQrbIBh7z59Puxrxz2uarPOpFQBZhw4ILAesBUkGHF20twwOS/6TOlTMufHj y3QmU9G9LXxbQ9PFDcsgFezQkK9cqm6BKfvUIp95wWS9qC4PFQr+y2R82IcOHRL8CbSfMdRGkSZxa YCtrB9kc9zvK3fX+srzRAYV+mrfTMtxSCWuKWMGFfKw3cNvir5yV9waqhbF0es7IMq3QxS5ex/fko /XASiq12uaEVhGQ==; Received: from ch-demo-asa.virtuozzo.com ([130.117.225.8] helo=f0.sw.ru) by relay.virtuozzo.com with esmtp (Exim 4.96) (envelope-from ) id 1x90Xt-00BTZk-1u; Tue, 22 Sep 2026 15:31:19 +0200 From: Konstantin Khorenko To: Alexey Kuznetsov , devel@openvz.org, Konstantin Khorenko In-Reply-To: <20260922-pr-khorenko-vstor-145663-ext4-ms-v1-0-4dd83d495810@virtuozzo.com> References: <20260922-pr-khorenko-vstor-145663-ext4-ms-v1-0-4dd83d495810@virtuozzo.com> Message-Id: <179008388473.3011502.4154628376086916620.b4-ty@b4> Date: Tue, 22 Sep 2026 15:31:24 +0200 MIME-Version: 1.0 X-Mailer: b4 0.16.0 X-Developer-Signature: v=1; a=openpgp-sha256; l=996; i=khorenko@virtuozzo.com; h=from:subject:message-id; bh=NlZY42A1kQyFumYhLCU8hpVFi4K3Xu4faSidJU+75Ko=; b=owEBbQKS/ZANAwAKAVGWCkf5YVwqAcsmYgBqsoMwnkYrP08RSfAMNqSjL3s4zYDDC5epk90zK RebbVRfmrqJAjMEAAEKAB0WIQRWD23IPcXT0GO9CCxRlgpH+WFcKgUCarKDMAAKCRBRlgpH+WFc KsUED/0dLLGp5Q/P7F5xPIiEnDLsG4lZIdDDWom15Pm+34uTDgESK/ItyeMVKsFebb0KugCLU4y YF7b3VrZuZc1chXOlCsP6NmToUJjy8wKIZzTV5eU2sQEQ/A6eaEe2ulwDOybzHK5FdUTYDuju7O 1LWqMKhv25JQ/ihAmiHtAmW+8DESJzRiVxTzPSHPcqK/AaU/kEDUhqGRTwMs3bZ3AQ2/yaGNoqm qi8khkzALNHyh4DREJNv48jI59uTB+UJq0FaBV3ltFxSXyKaXWoS6t4cFkM3fSNQjSqmqmthO6A 7znMAWg+v/+XbcTk+wUHV8613SAPw2lHsyi9W0Se+eE8B0KdzpafaoufCFUW1KXw3Q2f5bUjzXy GmgzjDTJoaiCa5857F06AG8DVMeSRY1aGUTY+H+CUxX8SasDiMyDEskIgq0cGnflEclwyPt0SPH 3/QhQQC3fBnMRqd57hnvv/+c82YEgAO6bKmCuqtejuiU/KTez5rwaVQyWnyicR86y0Ozm1wpq7b NHOcMLvZEww8EDlMVaK8lUJED80XfhCo83llqAN719PXdZSE2whHOe16S3Z8XtFT0PAM9zzzUDJ MiNBDmgjyu+ILdlQ/eODXuZyl7t/5KP0z+T+NKVw/M5FOZc3zwfyk3oYGPcs9xiooyje/kT8RpU jOvvSA+vTCXo5tg== X-Developer-Key: i=khorenko@virtuozzo.com; a=openpgp; fpr=560F6DC83DC5D3D063BD082C51960A47F9615C2A X-OZ-Fwd: true Subject: Re: [Devel] [PATCH hci-8.1 0/2] ext4: replace the vz prefetch test_bit patch with the mainstream one X-BeenThere: devel@openvz.org X-Mailman-Version: 2.1.12 Precedence: list List-Id: OpenVZ development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: devel-bounces@openvz.org Errors-To: devel-bounces@openvz.org On Tue, 22 Sep 2026 15:27:46 +0200, Konstantin Khorenko wrote: > ext4: replace the vz prefetch test_bit patch with the mainstream one > > The vz patch 3fff8724d1f89 ("fs/ext4: do not run test_and_set_bit on > every prefetch scan") went in for VSTOR-137147 to stop > ext4_mb_prefetch() from doing a locked test_and_set_bit on bb_state of > every group it walks. The bit is set-only, yet the atomic RMW took the > ext4_group_info cache line exclusive on every pass and bounced it > between allocating threads. > > [...] Applied to branch-rh10-6.12.0-211.52.1.22.x.vz10-ovz, will be released in rh10-6.12.0-211.52.1.22.2.vz10, thanks! [1/2] Revert "fs/ext4: do not run test_and_set_bit on every prefetch scan" https://bitbucket.org/virtuozzocore/vzkernel.vzs/commits/52ea9a9ab754 [2/2] ext4: avoid RWM atomic in EXT4_MB_GRP_TEST_AND_SET_READ https://bitbucket.org/virtuozzocore/vzkernel.vzs/commits/7ecb7901c306 -- Konstantin Khorenko _______________________________________________ Devel mailing list Devel@openvz.org https://lists.openvz.org/mailman/listinfo/devel