From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id E02757604D for ; Fri, 26 Apr 2024 04:00:05 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1714104006; cv=none; b=I2w9K5H0lQJn+KVj3jUYuXVAiiPd9wdXUphof8sEeOlzYSOdig0Gnv89ZE5FzbkwQqiY7LKCL+iDTmSLAyOiH70LeiIYX2EKOLR/uiyThc9Jzokrqw/UtnK2P7fw8x6N4XxcYrbAek/l/w9EgwTULEtpUdVbFVQXV4lEeGCsh3Q= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1714104006; c=relaxed/simple; bh=/2hvDmMaVeDYXiefuvooNIW1TSW7LekhyVOPSfTgIvc=; h=Date:To:From:Subject:Message-Id; b=tvoftvjTDgbkABXEt+7f0xwPOAJtuWvyCRlZwG7RgOMatvNgDnHtzdUh38tuhMwerX8GUUh//Clio02bJPB54DGHPwJ28nPe5TyxGdh5HgZatRvG/6Vo4ZM15erI70NsvNyLzyNFd6EAU4gsFbkmScZ4ZKZDZZ/lb5btTJlvXC8= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linux-foundation.org header.i=@linux-foundation.org header.b=JVVt2/QP; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linux-foundation.org header.i=@linux-foundation.org header.b="JVVt2/QP" Received: by smtp.kernel.org (Postfix) with ESMTPSA id B44EAC113CD; Fri, 26 Apr 2024 04:00:05 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linux-foundation.org; s=korg; t=1714104005; bh=/2hvDmMaVeDYXiefuvooNIW1TSW7LekhyVOPSfTgIvc=; h=Date:To:From:Subject:From; b=JVVt2/QPax23JdCVNUO6tCoYO0u6HAp9PdS3iSowMJZ9zjoeGPcA8nPQSjESHHikU 2Z5mJ6oNypLHEnxUIH5Sza7xAkAnHDHPkbZNkr9IRyHyLntaFF0MzoDBvqzhkVa6w4 LYeM/ROz/rb5XnYEHIj64XJ9pcITg9Y+Hp+SWVMY= Date: Thu, 25 Apr 2024 21:00:05 -0700 To: mm-commits@vger.kernel.org,dennis@kernel.org,wangkefeng.wang@huawei.com,akpm@linux-foundation.org From: Andrew Morton Subject: [merged mm-stable] mm-backing-dev-use-group-allocation-free-of-per-cpu-counters-api.patch removed from -mm tree Message-Id: <20240426040005.B44EAC113CD@smtp.kernel.org> Precedence: bulk X-Mailing-List: mm-commits@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: The quilt patch titled Subject: mm: backing-dev: use group allocation/free of per-cpu counters API has been removed from the -mm tree. Its filename was mm-backing-dev-use-group-allocation-free-of-per-cpu-counters-api.patch This patch was dropped because it was merged into the mm-stable branch of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm ------------------------------------------------------ From: Kefeng Wang Subject: mm: backing-dev: use group allocation/free of per-cpu counters API Date: Mon, 25 Mar 2024 11:56:35 +0800 Use group allocation/free of per-cpu counters api to accelerate wb_init/exit() and simplify code. Link: https://lkml.kernel.org/r/20240325035635.49342-1-wangkefeng.wang@huawei.com Signed-off-by: Kefeng Wang Cc: Dennis Zhou Signed-off-by: Andrew Morton --- mm/backing-dev.c | 23 +++++------------------ 1 file changed, 5 insertions(+), 18 deletions(-) --- a/mm/backing-dev.c~mm-backing-dev-use-group-allocation-free-of-per-cpu-counters-api +++ a/mm/backing-dev.c @@ -388,7 +388,7 @@ static void wb_update_bandwidth_workfn(s static int wb_init(struct bdi_writeback *wb, struct backing_dev_info *bdi, gfp_t gfp) { - int i, err; + int err; memset(wb, 0, sizeof(*wb)); @@ -416,18 +416,10 @@ static int wb_init(struct bdi_writeback if (err) return err; - for (i = 0; i < NR_WB_STAT_ITEMS; i++) { - err = percpu_counter_init(&wb->stat[i], 0, gfp); - if (err) - goto out_destroy_stat; - } - - return 0; + err = percpu_counter_init_many(wb->stat, 0, gfp, NR_WB_STAT_ITEMS); + if (err) + fprop_local_destroy_percpu(&wb->completions); -out_destroy_stat: - while (i--) - percpu_counter_destroy(&wb->stat[i]); - fprop_local_destroy_percpu(&wb->completions); return err; } @@ -460,13 +452,8 @@ static void wb_shutdown(struct bdi_write static void wb_exit(struct bdi_writeback *wb) { - int i; - WARN_ON(delayed_work_pending(&wb->dwork)); - - for (i = 0; i < NR_WB_STAT_ITEMS; i++) - percpu_counter_destroy(&wb->stat[i]); - + percpu_counter_destroy_many(wb->stat, NR_WB_STAT_ITEMS); fprop_local_destroy_percpu(&wb->completions); } _ Patches currently in -mm which might be from wangkefeng.wang@huawei.com are arm64-mm-drop-vm_fault_badmap-vm_fault_badaccess.patch arm-mm-drop-vm_fault_badmap-vm_fault_badaccess.patch mm-move-mm-counter-updating-out-of-set_pte_range.patch mm-filemap-batch-mm-counter-updating-in-filemap_map_pages.patch mm-swapfile-check-usable-swap-device-in-__folio_throttle_swaprate.patch mm-memory-check-userfaultfd_wp-in-vmf_orig_pte_uffd_wp.patch