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[2620:137:e000::1:20]) by mx.google.com with ESMTP id m8-20020a056402430800b0046bda93d27asi1872313edc.589.2022.12.07.10.31.09; Wed, 07 Dec 2022 10:31:34 -0800 (PST) Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) client-ip=2620:137:e000::1:20; Authentication-Results: mx.google.com; dkim=pass header.i=@gmail.com header.s=20210112 header.b=V1arU17e; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=pass (p=NONE sp=QUARANTINE dis=NONE) header.from=gmail.com Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229637AbiLGSKQ (ORCPT + 99 others); Wed, 7 Dec 2022 13:10:16 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:37166 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229456AbiLGSKP (ORCPT ); Wed, 7 Dec 2022 13:10:15 -0500 Received: from mail-pg1-x531.google.com (mail-pg1-x531.google.com [IPv6:2607:f8b0:4864:20::531]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 53F6E60B51; Wed, 7 Dec 2022 10:10:14 -0800 (PST) Received: by mail-pg1-x531.google.com with SMTP id 82so17115800pgc.0; Wed, 07 Dec 2022 10:10:14 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20210112; h=content-transfer-encoding:mime-version:message-id:date:subject:cc :to:from:from:to:cc:subject:date:message-id:reply-to; bh=xAXo1CC+DgLv8rsBENeTWCQSP6gxhN9/sRtHellAmI4=; b=V1arU17eo0dro0cMkfZPYd0YHgGtjRfIQwEbUUHPwbn8exlXaQdYGMQYrzdSqb+2hx 3kkrZL685pmQA3r0JkmR+ri5O91x3EMDHlIS545Yyh8dfOUNkHEYnMS3Y9m/CeKF8ESo /XBAGOqVRRyxlVsBYnlruFYc/scVRL+VVjrgwO0gPBRXUEsViKzxZ1U8DMHLfzeLiGke 5CuHJAF4PSOxoxSfrIiUe8PbJT2DO287MAkU7QVPYtmEFhxViRSNY86iSCc+807w7FMJ iBqNmdrZ7Idc4pzUjL8ZGTLjr0IOLuyOiFVCMBTkrtqCCZ9iIyAZOsBWA6LCZmOmFvGX ieTg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=content-transfer-encoding:mime-version:message-id:date:subject:cc :to:from:x-gm-message-state:from:to:cc:subject:date:message-id :reply-to; bh=xAXo1CC+DgLv8rsBENeTWCQSP6gxhN9/sRtHellAmI4=; b=8QMwcpwtcUpgvKscdwzpl2+owZHHrv51O9MN/qJA+EiFOZd8G4txAtQ+f3Xd0mR5i7 Fq4zI/cNmB/Z8NKt+rEk8F+YGHGHdSnFAAQpSY2b6Rt5saATrGIjUEZgcxk05iSMnv7o JKR8EVwIqBe3DvyG3DOC75mge8fc9PbhiiNm0lw/Vv15HqUKibThcSg6a03Kx1RBcvnm BR7lurzWO1mDSTts6O44L3da6k4rkiq7dYWOddXkBJe4zUJKFewPq/9dSSkWkEmZVkzh 7q8EYQ73ClRASBVoDyRDg7R4xCe0xqWFEAQhXK55/hbwGxo86OpPX8XNw0mPqNdsnG2Q b1OQ== X-Gm-Message-State: ANoB5pkAgCwLPXTrMIdICgDFHytojqPvw4H3m0bLN2DrU5aVIqWPJY4I bhFPDp7Qig7liQy/cm17irc4i/SERelWsA== X-Received: by 2002:a63:1e44:0:b0:478:91e1:ff60 with SMTP id p4-20020a631e44000000b0047891e1ff60mr20669074pgm.206.1670436613596; Wed, 07 Dec 2022 10:10:13 -0800 (PST) Received: from fedora.hsd1.ca.comcast.net ([2601:644:8002:1c20::2c6b]) by smtp.googlemail.com with ESMTPSA id w2-20020a17090abc0200b00218f9bd50c7sm1468735pjr.50.2022.12.07.10.10.12 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 07 Dec 2022 10:10:13 -0800 (PST) From: "Vishal Moola (Oracle)" To: linux-mm@kvack.org Cc: tytso@mit.edu, linux-ext4@vger.kernel.org, linux-kernel@vger.kernel.org, akpm@linux-foundation.org, "Vishal Moola (Oracle)" , Matthew Wilcox Subject: [PATCH mm-unstable v2] ext4: Convert mext_page_double_lock() to mext_folio_double_lock() Date: Wed, 7 Dec 2022 10:10:09 -0800 Message-Id: <20221207181009.4016-1-vishal.moola@gmail.com> X-Mailer: git-send-email 2.38.1 MIME-Version: 1.0 X-Spam-Status: No, score=-2.1 required=5.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,DKIM_VALID_EF,FREEMAIL_FROM, RCVD_IN_DNSWL_NONE,SPF_HELO_NONE,SPF_PASS autolearn=ham autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on lindbergh.monkeyblade.net Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org X-getmail-retrieved-from-mailbox: =?utf-8?q?INBOX?= X-GMAIL-THRID: =?utf-8?q?1751581085129476362?= X-GMAIL-MSGID: =?utf-8?q?1751581085129476362?= Converts mext_page_double_lock() to use folios. This change saves 146 bytes of kernel text. It also removes 6 calls to compound_head() and 2 calls to folio_file_page(). Signed-off-by: Vishal Moola (Oracle) Reviewed-by: Matthew Wilcox (Oracle) --- fs/ext4/move_extent.c | 46 +++++++++++++++++++++---------------------- 1 file changed, 23 insertions(+), 23 deletions(-) diff --git a/fs/ext4/move_extent.c b/fs/ext4/move_extent.c index 8dbb87edf24c..2de9829aed63 100644 --- a/fs/ext4/move_extent.c +++ b/fs/ext4/move_extent.c @@ -110,22 +110,23 @@ mext_check_coverage(struct inode *inode, ext4_lblk_t from, ext4_lblk_t count, } /** - * mext_page_double_lock - Grab and lock pages on both @inode1 and @inode2 + * mext_folio_double_lock - Grab and lock folio on both @inode1 and @inode2 * * @inode1: the inode structure * @inode2: the inode structure - * @index1: page index - * @index2: page index - * @page: result page vector + * @index1: folio index + * @index2: folio index + * @folio: result folio vector * - * Grab two locked pages for inode's by inode order + * Grab two locked folio for inode's by inode order */ static int -mext_page_double_lock(struct inode *inode1, struct inode *inode2, - pgoff_t index1, pgoff_t index2, struct page *page[2]) +mext_folio_double_lock(struct inode *inode1, struct inode *inode2, + pgoff_t index1, pgoff_t index2, struct folio *folio[2]) { struct address_space *mapping[2]; unsigned int flags; + unsigned fgp_flags = FGP_LOCK | FGP_WRITE | FGP_CREAT | FGP_STABLE; BUG_ON(!inode1 || !inode2); if (inode1 < inode2) { @@ -138,28 +139,30 @@ mext_page_double_lock(struct inode *inode1, struct inode *inode2, } flags = memalloc_nofs_save(); - page[0] = grab_cache_page_write_begin(mapping[0], index1); - if (!page[0]) { + folio[0] = __filemap_get_folio(mapping[0], index1, fgp_flags, + mapping_gfp_mask(mapping[0])); + if (!folio[0]) { memalloc_nofs_restore(flags); return -ENOMEM; } - page[1] = grab_cache_page_write_begin(mapping[1], index2); + folio[1] = __filemap_get_folio(mapping[1], index2, fgp_flags, + mapping_gfp_mask(mapping[1])); memalloc_nofs_restore(flags); - if (!page[1]) { - unlock_page(page[0]); - put_page(page[0]); + if (!folio[1]) { + folio_unlock(folio[0]); + folio_put(folio[0]); return -ENOMEM; } /* - * grab_cache_page_write_begin() may not wait on page's writeback if + * __filemap_get_folio() may not wait on folio's writeback if * BDI not demand that. But it is reasonable to be very conservative - * here and explicitly wait on page's writeback + * here and explicitly wait on folio's writeback */ - wait_on_page_writeback(page[0]); - wait_on_page_writeback(page[1]); + folio_wait_writeback(folio[0]); + folio_wait_writeback(folio[1]); if (inode1 > inode2) - swap(page[0], page[1]); + swap(folio[0], folio[1]); return 0; } @@ -252,7 +255,6 @@ move_extent_per_page(struct file *o_filp, struct inode *donor_inode, int block_len_in_page, int unwritten, int *err) { struct inode *orig_inode = file_inode(o_filp); - struct page *pagep[2] = {NULL, NULL}; struct folio *folio[2] = {NULL, NULL}; handle_t *handle; ext4_lblk_t orig_blk_offset, donor_blk_offset; @@ -303,8 +305,8 @@ move_extent_per_page(struct file *o_filp, struct inode *donor_inode, replaced_size = data_size; - *err = mext_page_double_lock(orig_inode, donor_inode, orig_page_offset, - donor_page_offset, pagep); + *err = mext_folio_double_lock(orig_inode, donor_inode, orig_page_offset, + donor_page_offset, folio); if (unlikely(*err < 0)) goto stop_journal; /* @@ -314,8 +316,6 @@ move_extent_per_page(struct file *o_filp, struct inode *donor_inode, * hold page's lock, if it is still the case data copy is not * necessary, just swap data blocks between orig and donor. */ - folio[0] = page_folio(pagep[0]); - folio[1] = page_folio(pagep[1]); VM_BUG_ON_FOLIO(folio_test_large(folio[0]), folio[0]); VM_BUG_ON_FOLIO(folio_test_large(folio[1]), folio[1]);