From patchwork Mon Oct 17 20:24:33 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: "Vishal Moola (Oracle)" X-Patchwork-Id: 13009532 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 7B223C4167D for ; Mon, 17 Oct 2022 20:27:21 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229926AbiJQU1T (ORCPT ); Mon, 17 Oct 2022 16:27:19 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:55752 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S230198AbiJQU0z (ORCPT ); Mon, 17 Oct 2022 16:26:55 -0400 Received: from mail-pl1-x62a.google.com (mail-pl1-x62a.google.com [IPv6:2607:f8b0:4864:20::62a]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id E6BA47B291; Mon, 17 Oct 2022 13:25:30 -0700 (PDT) Received: by mail-pl1-x62a.google.com with SMTP id 10so11871859pli.0; Mon, 17 Oct 2022 13:25:30 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20210112; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:from:to:cc:subject:date :message-id:reply-to; bh=wBY1NrBIv9xetMKdetRJVFMD/fis2/cKbUx1OxFOf8Q=; b=MWt3X87HmwhMmLHuEolcoErHJ8+cnb0qejVEhB4UK228aRdmlAOEshJVcQq6SimLXJ JY9/QH0hMx5/25hlt9MTwbDJumVPAHhKg/cCm8WuVuUFy+I+u48SO+9tpN2iCm5KZKEF xo/ONL+jgXeXf3TipVML2Zzj4cnJpuRilibE7T+1XNYePTjGRz+T9vKG3vw+o3+bvU6/ a+c9PKP+odj8q59fBj8tZTCKw/d/gNag3lEKGBmlFbH3mLui2bpCo2Buwa4jcmTPRkLP 0HnXfKu3eDv3UIMGGEuUq29e3raok2bt+fHu5v9GbA4cVQqJd98ycuMa1CZWo4Ustdcx TgdA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to; bh=wBY1NrBIv9xetMKdetRJVFMD/fis2/cKbUx1OxFOf8Q=; b=IOwWXkZ4mpNhvNVQIQ5C7oSIV3zUDnGBYakWQ0IHmwHh2HAvQFuQxzeUo/KZTjLFcO I+EFmte0jREk7b2jghjsWyn0O6JCjDrb6e54dd0Uypk10HVmrA24F/mCgw2RTX7MRERY ZsoC/yOHl8noogHzHu6hb2cMgU5S/z8Rm7FDoR3WHkumvkgCoV9veAUEWvBPD0jfFTRG rHOMdPCcjcK4WAzMrTFLR7DBoJIWNeW5TOzHhuiFi81obheM6XDV93pr5FU6DSQhjr6W AevJc3SsWkebrqUrkaGV0BV8INaZW+NgUL2iK6vi0ZGFCD5p60LhiKK2fTrrX7UZ3R2M QR2w== X-Gm-Message-State: ACrzQf33bHqG6XQlH0ak5MSkP6pdY8adG7RfqJbs0YpSrGNucFi7i024 a5eNIQDlYKiEEPfHT50Uy5WwlHI/DpRWOA== X-Google-Smtp-Source: AMsMyM5GIzxV9I8ip+Pr2r9RoHLPxaNW9eYwlWAmGdU4DreygpgYRX81ubULxlq5zAIFV1Q1aTcOIw== X-Received: by 2002:a17:902:c943:b0:182:f5af:40c5 with SMTP id i3-20020a170902c94300b00182f5af40c5mr13511810pla.72.1666038299406; Mon, 17 Oct 2022 13:24:59 -0700 (PDT) Received: from vmfolio.. (c-76-102-73-225.hsd1.ca.comcast.net. [76.102.73.225]) by smtp.googlemail.com with ESMTPSA id pj12-20020a17090b4f4c00b00200b12f2bf5sm145037pjb.1.2022.10.17.13.24.58 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 17 Oct 2022 13:24:59 -0700 (PDT) From: "Vishal Moola (Oracle)" To: linux-fsdevel@vger.kernel.org Cc: linux-afs@lists.infradead.org, linux-kernel@vger.kernel.org, linux-btrfs@vger.kernel.org, ceph-devel@vger.kernel.org, linux-cifs@vger.kernel.org, linux-ext4@vger.kernel.org, linux-f2fs-devel@lists.sourceforge.net, cluster-devel@redhat.com, linux-nilfs@vger.kernel.org, linux-mm@kvack.org, "Vishal Moola (Oracle)" , David Howells Subject: [PATCH v3 05/23] afs: Convert afs_writepages_region() to use filemap_get_folios_tag() Date: Mon, 17 Oct 2022 13:24:33 -0700 Message-Id: <20221017202451.4951-6-vishal.moola@gmail.com> X-Mailer: git-send-email 2.36.1 In-Reply-To: <20221017202451.4951-1-vishal.moola@gmail.com> References: <20221017202451.4951-1-vishal.moola@gmail.com> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-cifs@vger.kernel.org Convert to use folios throughout. This function is in preparation to remove find_get_pages_range_tag(). Also modified this function to write the whole batch one at a time, rather than calling for a new set every single write. Signed-off-by: Vishal Moola (Oracle) Tested-by: David Howells --- fs/afs/write.c | 114 +++++++++++++++++++++++++------------------------ 1 file changed, 59 insertions(+), 55 deletions(-) diff --git a/fs/afs/write.c b/fs/afs/write.c index 9ebdd36eaf2f..c17dbd82a38c 100644 --- a/fs/afs/write.c +++ b/fs/afs/write.c @@ -699,82 +699,86 @@ static int afs_writepages_region(struct address_space *mapping, loff_t start, loff_t end, loff_t *_next) { struct folio *folio; - struct page *head_page; + struct folio_batch fbatch; ssize_t ret; + unsigned int i; int n, skips = 0; _enter("%llx,%llx,", start, end); + folio_batch_init(&fbatch); do { pgoff_t index = start / PAGE_SIZE; - n = find_get_pages_range_tag(mapping, &index, end / PAGE_SIZE, - PAGECACHE_TAG_DIRTY, 1, &head_page); + n = filemap_get_folios_tag(mapping, &index, end / PAGE_SIZE, + PAGECACHE_TAG_DIRTY, &fbatch); + if (!n) break; + for (i = 0; i < n; i++) { + folio = fbatch.folios[i]; + start = folio_pos(folio); /* May regress with THPs */ - folio = page_folio(head_page); - start = folio_pos(folio); /* May regress with THPs */ - - _debug("wback %lx", folio_index(folio)); + _debug("wback %lx", folio_index(folio)); - /* At this point we hold neither the i_pages lock nor the - * page lock: the page may be truncated or invalidated - * (changing page->mapping to NULL), or even swizzled - * back from swapper_space to tmpfs file mapping - */ - if (wbc->sync_mode != WB_SYNC_NONE) { - ret = folio_lock_killable(folio); - if (ret < 0) { - folio_put(folio); - return ret; - } - } else { - if (!folio_trylock(folio)) { - folio_put(folio); - return 0; + /* At this point we hold neither the i_pages lock nor the + * page lock: the page may be truncated or invalidated + * (changing page->mapping to NULL), or even swizzled + * back from swapper_space to tmpfs file mapping + */ + if (wbc->sync_mode != WB_SYNC_NONE) { + ret = folio_lock_killable(folio); + if (ret < 0) { + folio_batch_release(&fbatch); + return ret; + } + } else { + if (!folio_trylock(folio)) + continue; } - } - if (folio_mapping(folio) != mapping || - !folio_test_dirty(folio)) { - start += folio_size(folio); - folio_unlock(folio); - folio_put(folio); - continue; - } + if (folio->mapping != mapping || + !folio_test_dirty(folio)) { + start += folio_size(folio); + folio_unlock(folio); + continue; + } - if (folio_test_writeback(folio) || - folio_test_fscache(folio)) { - folio_unlock(folio); - if (wbc->sync_mode != WB_SYNC_NONE) { - folio_wait_writeback(folio); + if (folio_test_writeback(folio) || + folio_test_fscache(folio)) { + folio_unlock(folio); + if (wbc->sync_mode != WB_SYNC_NONE) { + folio_wait_writeback(folio); #ifdef CONFIG_AFS_FSCACHE - folio_wait_fscache(folio); + folio_wait_fscache(folio); #endif - } else { - start += folio_size(folio); + } else { + start += folio_size(folio); + } + if (wbc->sync_mode == WB_SYNC_NONE) { + if (skips >= 5 || need_resched()) { + *_next = start; + _leave(" = 0 [%llx]", *_next); + return 0; + } + skips++; + } + continue; } - folio_put(folio); - if (wbc->sync_mode == WB_SYNC_NONE) { - if (skips >= 5 || need_resched()) - break; - skips++; + + if (!folio_clear_dirty_for_io(folio)) + BUG(); + ret = afs_write_back_from_locked_folio(mapping, wbc, + folio, start, end); + if (ret < 0) { + _leave(" = %zd", ret); + folio_batch_release(&fbatch); + return ret; } - continue; - } - if (!folio_clear_dirty_for_io(folio)) - BUG(); - ret = afs_write_back_from_locked_folio(mapping, wbc, folio, start, end); - folio_put(folio); - if (ret < 0) { - _leave(" = %zd", ret); - return ret; + start += ret; } - - start += ret; - + folio_batch_release(&fbatch); cond_resched(); } while (wbc->nr_to_write > 0);