From patchwork Tue Dec 5 12:37:18 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Yu Kuai X-Patchwork-Id: 174039 Return-Path: Delivered-To: ouuuleilei@gmail.com Received: by 2002:a59:bcd1:0:b0:403:3b70:6f57 with SMTP id r17csp3398218vqy; Tue, 5 Dec 2023 04:38:56 -0800 (PST) X-Google-Smtp-Source: AGHT+IFaDy6Rypd2sIkWN2u4gwnqAr9MlqLOTuJo8rNn+npQF/0hcQH6OZ0mnCX90ppV4Ft9eOnP X-Received: by 2002:a17:90b:1bd1:b0:285:93ee:a591 with SMTP id oa17-20020a17090b1bd100b0028593eea591mr1226037pjb.43.1701779936137; Tue, 05 Dec 2023 04:38:56 -0800 (PST) ARC-Seal: i=1; a=rsa-sha256; t=1701779936; cv=none; d=google.com; s=arc-20160816; b=vOr5pr6EaJvg6aLcunP7HxQhd7/Ll8v/jDGBt206cAE0zn67RtZh5CmpEmc6x7xr6H uR/F/AVmiJ+zlnCQwGdqei+moOlzq5H6900xcKNmTQ2woRhOkBijiuQVayFnrboroNxz LXPrxHghwrtR0CySI8hX7lrBXBDMEP/ydq/QUPCfI7wsLod34xWSv5yFckd5HCzObzgB Q7E9IdB8sYPJt2ghWv0KlKXmKVY/S5ol/jgI2XQwi1eKY1KN7E1CQlRSIJ39TiD7G/G/ eb5bqvUZuI3GC8DELwUgjXmOuqeX+RbW90/KD4Q+tzQMeuk69RupvrgqJ1GK1HTytN6X Zo7A== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=list-id:precedence:content-transfer-encoding:mime-version :references:in-reply-to:message-id:date:subject:cc:to:from; bh=9PQ3i8eOuSJfDaBn5ihWlUrMP5ECLP0MoEo5TqmGAaM=; fh=kv9vKj/5lnGCIOTbZ6TovGT4MvpEyXaWy0g1gr+yv30=; b=ZH18qvpDufioV/rOXUYYtsDhKSuEUQejVcj3aWl0E/P5MqoYpW0TpmVoKbiKt/Md+h SIrGjOPqQgRDXYHaJFapF9kQ37h/Kcejw9u/HGUVIgRVfT+LphEbzmQ0xmr9RBe2l/nT C5q9jRaS01cibvY903OnB/wL9a/Ilc3HX5Uft1rLr89EFimfafTcK3iyllQUmtz7wBts F8QsRUepi6bhK/lEG3TqMBzOqNQWPjgkFmZKe/cTdVUFePYzgvFEBRmBLcaYWrecNISO AbUmojsBrF4PZ7CHSiEt6bB8/yu7M+87hq/pwDgSXKrR3+NH3MHF/A2NQGY0dqPIl1pk MBDQ== ARC-Authentication-Results: i=1; mx.google.com; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.37 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: from snail.vger.email (snail.vger.email. [23.128.96.37]) by mx.google.com with ESMTPS id z20-20020a17090acb1400b002868d076054si617026pjt.91.2023.12.05.04.38.54 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 05 Dec 2023 04:38:56 -0800 (PST) Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.37 as permitted sender) client-ip=23.128.96.37; Authentication-Results: mx.google.com; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.37 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: from out1.vger.email (depot.vger.email [IPv6:2620:137:e000::3:0]) by snail.vger.email (Postfix) with ESMTP id 6720D80BBEB8; Tue, 5 Dec 2023 04:38:53 -0800 (PST) X-Virus-Status: Clean X-Virus-Scanned: clamav-milter 0.103.11 at snail.vger.email Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1345223AbjLEMil (ORCPT + 99 others); Tue, 5 Dec 2023 07:38:41 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:48460 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1345147AbjLEMif (ORCPT ); Tue, 5 Dec 2023 07:38:35 -0500 Received: from dggsgout12.his.huawei.com (unknown [45.249.212.56]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id B26D610F; Tue, 5 Dec 2023 04:38:41 -0800 (PST) Received: from mail.maildlp.com (unknown [172.19.93.142]) by dggsgout12.his.huawei.com (SkyGuard) with ESMTP id 4Sl0Sr6KkZz4f3khR; Tue, 5 Dec 2023 20:38:36 +0800 (CST) Received: from mail02.huawei.com (unknown [10.116.40.112]) by mail.maildlp.com (Postfix) with ESMTP id 0C88E1A0928; Tue, 5 Dec 2023 20:38:39 +0800 (CST) Received: from huaweicloud.com (unknown [10.175.104.67]) by APP1 (Coremail) with SMTP id cCh0CgDnNw7GGW9lr8E8Cw--.35507S8; Tue, 05 Dec 2023 20:38:38 +0800 (CST) From: Yu Kuai To: axboe@kernel.dk, roger.pau@citrix.com, colyli@suse.de, kent.overstreet@gmail.com, joern@lazybastard.org, miquel.raynal@bootlin.com, richard@nod.at, vigneshr@ti.com, sth@linux.ibm.com, hoeppner@linux.ibm.com, hca@linux.ibm.com, gor@linux.ibm.com, agordeev@linux.ibm.com, jejb@linux.ibm.com, martin.petersen@oracle.com, clm@fb.com, josef@toxicpanda.com, dsterba@suse.com, nico@fluxnic.net, xiang@kernel.org, chao@kernel.org, tytso@mit.edu, adilger.kernel@dilger.ca, agruenba@redhat.com, jack@suse.com, konishi.ryusuke@gmail.com, willy@infradead.org, akpm@linux-foundation.org, hare@suse.de, p.raghav@samsung.com Cc: linux-block@vger.kernel.org, linux-kernel@vger.kernel.org, xen-devel@lists.xenproject.org, linux-bcache@vger.kernel.org, linux-mtd@lists.infradead.org, linux-s390@vger.kernel.org, linux-scsi@vger.kernel.org, linux-bcachefs@vger.kernel.org, linux-btrfs@vger.kernel.org, linux-erofs@lists.ozlabs.org, linux-ext4@vger.kernel.org, gfs2@lists.linux.dev, linux-nilfs@vger.kernel.org, yukuai3@huawei.com, yukuai1@huaweicloud.com, yi.zhang@huawei.com, yangerkun@huawei.com Subject: [PATCH -next RFC 04/14] mtd: block2mtd: use bdev apis Date: Tue, 5 Dec 2023 20:37:18 +0800 Message-Id: <20231205123728.1866699-5-yukuai1@huaweicloud.com> X-Mailer: git-send-email 2.39.2 In-Reply-To: <20231205123728.1866699-1-yukuai1@huaweicloud.com> References: <20231205123728.1866699-1-yukuai1@huaweicloud.com> MIME-Version: 1.0 X-CM-TRANSID: cCh0CgDnNw7GGW9lr8E8Cw--.35507S8 X-Coremail-Antispam: 1UD129KBjvJXoW3Jw1DtryDWw17CF45XFyrZwb_yoW7AF15pa y3Ca95Aw4UKrn8ur4xXwn8Zr12g3sFqayUCay7C3yakF93JryIkas7ta45KFyrKry8AFWk XF4DArs5XF40grJanT9S1TB71UUUUUUqnTZGkaVYY2UrUUUUjbIjqfuFe4nvWSU5nxnvy2 9KBjDU0xBIdaVrnRJUUUPa14x267AKxVWrJVCq3wAFc2x0x2IEx4CE42xK8VAvwI8IcIk0 rVWrJVCq3wAFIxvE14AKwVWUJVWUGwA2048vs2IY020E87I2jVAFwI0_JF0E3s1l82xGYI kIc2x26xkF7I0E14v26ryj6s0DM28lY4IEw2IIxxk0rwA2F7IY1VAKz4vEj48ve4kI8wA2 z4x0Y4vE2Ix0cI8IcVAFwI0_Ar0_tr1l84ACjcxK6xIIjxv20xvEc7CjxVAFwI0_Gr1j6F 4UJwA2z4x0Y4vEx4A2jsIE14v26rxl6s0DM28EF7xvwVC2z280aVCY1x0267AKxVW0oVCq 3wAS0I0E0xvYzxvE52x082IY62kv0487Mc02F40EFcxC0VAKzVAqx4xG6I80ewAv7VC0I7 IYx2IY67AKxVWUXVWUAwAv7VC2z280aVAFwI0_Jr0_Gr1lOx8S6xCaFVCjc4AY6r1j6r4U M4x0Y48IcxkI7VAKI48JM4x0x7Aq67IIx4CEVc8vx2IErcIFxwACI402YVCY1x02628vn2 kIc2xKxwCF04k20xvY0x0EwIxGrwCFx2IqxVCFs4IE7xkEbVWUJVW8JwC20s026c02F40E 14v26r1j6r18MI8I3I0E7480Y4vE14v26r106r1rMI8E67AF67kF1VAFwI0_Wrv_Gr1UMI IYrxkI7VAKI48JMIIF0xvE2Ix0cI8IcVAFwI0_Jr0_JF4lIxAIcVC0I7IYx2IY6xkF7I0E 14v26r4UJVWxJr1lIxAIcVCF04k26cxKx2IYs7xG6r1j6r1xMIIF0xvEx4A2jsIE14v26r 1j6r4UMIIF0xvEx4A2jsIEc7CjxVAFwI0_Gr1j6F4UJbIYCTnIWIevJa73UjIFyTuYvjfU oxhLUUUUU X-CM-SenderInfo: 51xn3trlr6x35dzhxuhorxvhhfrp/ X-Spam-Status: No, score=-1.9 required=5.0 tests=BAYES_00,MAY_BE_FORGED, RCVD_IN_DNSWL_BLOCKED,RCVD_IN_MSPIKE_H2,SPF_HELO_NONE,SPF_NONE, T_SCC_BODY_TEXT_LINE 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-Greylist: Sender passed SPF test, not delayed by milter-greylist-4.6.4 (snail.vger.email [0.0.0.0]); Tue, 05 Dec 2023 04:38:53 -0800 (PST) X-getmail-retrieved-from-mailbox: INBOX X-GMAIL-THRID: 1784445598319229162 X-GMAIL-MSGID: 1784445598319229162 From: Yu Kuai On the one hand covert to use folio while reading bdev inode, on the other hand prevent to access bd_inode directly. Signed-off-by: Yu Kuai --- drivers/mtd/devices/block2mtd.c | 80 +++++++++++++++------------------ 1 file changed, 35 insertions(+), 45 deletions(-) diff --git a/drivers/mtd/devices/block2mtd.c b/drivers/mtd/devices/block2mtd.c index aa44a23ec045..927fc9cf0856 100644 --- a/drivers/mtd/devices/block2mtd.c +++ b/drivers/mtd/devices/block2mtd.c @@ -46,40 +46,34 @@ struct block2mtd_dev { /* Static info about the MTD, used in cleanup_module */ static LIST_HEAD(blkmtd_device_list); - -static struct page *page_read(struct address_space *mapping, pgoff_t index) -{ - return read_mapping_page(mapping, index, NULL); -} - /* erase a specified part of the device */ static int _block2mtd_erase(struct block2mtd_dev *dev, loff_t to, size_t len) { - struct address_space *mapping = - dev->bdev_handle->bdev->bd_inode->i_mapping; - struct page *page; + struct block_device *bdev = dev->bdev_handle->bdev; + struct folio *folio; pgoff_t index = to >> PAGE_SHIFT; // page index int pages = len >> PAGE_SHIFT; u_long *p; u_long *max; while (pages) { - page = page_read(mapping, index); - if (IS_ERR(page)) - return PTR_ERR(page); + folio = bdev_read_folio(bdev, index); + if (IS_ERR(folio)) + return PTR_ERR(folio); - max = page_address(page) + PAGE_SIZE; - for (p=page_address(page); ppriv; - struct address_space *mapping = - dev->bdev_handle->bdev->bd_inode->i_mapping; - struct page *page; + struct folio *folio; pgoff_t index = from >> PAGE_SHIFT; int offset = from & (PAGE_SIZE-1); int cpylen; @@ -120,12 +112,12 @@ static int block2mtd_read(struct mtd_info *mtd, loff_t from, size_t len, cpylen = len; // this page len = len - cpylen; - page = page_read(mapping, index); - if (IS_ERR(page)) - return PTR_ERR(page); + folio = bdev_read_folio(dev->bdev_handle->bdev, index); + if (IS_ERR(folio)) + return PTR_ERR(folio); - memcpy(buf, page_address(page) + offset, cpylen); - put_page(page); + memcpy(buf, folio_address(folio) + offset, cpylen); + folio_put(folio); if (retlen) *retlen += cpylen; @@ -141,9 +133,8 @@ static int block2mtd_read(struct mtd_info *mtd, loff_t from, size_t len, static int _block2mtd_write(struct block2mtd_dev *dev, const u_char *buf, loff_t to, size_t len, size_t *retlen) { - struct page *page; - struct address_space *mapping = - dev->bdev_handle->bdev->bd_inode->i_mapping; + struct block_device *bdev = dev->bdev_handle->bdev; + struct folio *folio; pgoff_t index = to >> PAGE_SHIFT; // page index int offset = to & ~PAGE_MASK; // page offset int cpylen; @@ -155,18 +146,18 @@ static int _block2mtd_write(struct block2mtd_dev *dev, const u_char *buf, cpylen = len; // this page len = len - cpylen; - page = page_read(mapping, index); - if (IS_ERR(page)) - return PTR_ERR(page); + folio = bdev_read_folio(bdev, index); + if (IS_ERR(folio)) + return PTR_ERR(folio); - if (memcmp(page_address(page)+offset, buf, cpylen)) { - lock_page(page); - memcpy(page_address(page) + offset, buf, cpylen); - set_page_dirty(page); - unlock_page(page); - balance_dirty_pages_ratelimited(mapping); + if (memcmp(folio_address(folio) + offset, buf, cpylen)) { + folio_lock(folio); + memcpy(folio_address(folio) + offset, buf, cpylen); + folio_mark_dirty(folio); + folio_unlock(folio); + bdev_balance_dirty_pages_ratelimited(bdev); } - put_page(page); + folio_put(folio); if (retlen) *retlen += cpylen; @@ -211,8 +202,7 @@ static void block2mtd_free_device(struct block2mtd_dev *dev) kfree(dev->mtd.name); if (dev->bdev_handle) { - invalidate_mapping_pages( - dev->bdev_handle->bdev->bd_inode->i_mapping, 0, -1); + invalidate_bdev(dev->bdev_handle->bdev); bdev_release(dev->bdev_handle); } @@ -295,7 +285,7 @@ static struct block2mtd_dev *add_device(char *devname, int erase_size, goto err_free_block2mtd; } - if ((long)bdev->bd_inode->i_size % erase_size) { + if ((long)bdev_size(bdev) % erase_size) { pr_err("erasesize must be a divisor of device size\n"); goto err_free_block2mtd; } @@ -313,7 +303,7 @@ static struct block2mtd_dev *add_device(char *devname, int erase_size, dev->mtd.name = name; - dev->mtd.size = bdev->bd_inode->i_size & PAGE_MASK; + dev->mtd.size = bdev_size(bdev) & PAGE_MASK; dev->mtd.erasesize = erase_size; dev->mtd.writesize = 1; dev->mtd.writebufsize = PAGE_SIZE; From patchwork Tue Dec 5 12:37:24 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Yu Kuai X-Patchwork-Id: 174040 Return-Path: Delivered-To: ouuuleilei@gmail.com Received: by 2002:a59:bcd1:0:b0:403:3b70:6f57 with SMTP id r17csp3398561vqy; Tue, 5 Dec 2023 04:39:37 -0800 (PST) X-Google-Smtp-Source: AGHT+IEwBo6Z1kPcL+mI25rLPTsooFbPKzaoANBwnZm7LHxWJmHL6UJ7fECpGggzr0yOubC63fX2 X-Received: by 2002:a05:6a20:7492:b0:189:c46d:9790 with SMTP id p18-20020a056a20749200b00189c46d9790mr7152221pzd.30.1701779977695; Tue, 05 Dec 2023 04:39:37 -0800 (PST) ARC-Seal: i=1; a=rsa-sha256; t=1701779977; cv=none; d=google.com; s=arc-20160816; b=U9jCRdSPFvOUAjy0lUjrx6C6HMMUxaptPyaBadtt+47nm9LXmv1nuPsaApVw4e8E8n t/ddQ7GaQ8ksSXoY9vOT+kcYfQMD3Ys2Y9eiWgfAdmaKwwSzV0kLCl2zb4Ywk/xIzh/F THBqFMlVbOYG/GSOtK+y0ch7dyZhLInkqlxLC+32PdJwdpBrj9ShQd/5kYwd0ZKE+v5Y IYTJ6mD2SRsxmcImB0y9jNOqgEZvuqqKfpfo+CHa3l07h7y0dR/oV/tt2sXuhpKstLrP xIfonQBayzHSX3/BdM4i2hjyYPoT83xwvwUyHMUUpHaJ4QI3K8uqF51vHAZJllePH7Cz UaUw== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=list-id:precedence:content-transfer-encoding:mime-version :references:in-reply-to:message-id:date:subject:cc:to:from; bh=IX2NgISveltxpTJTNDbQNwh+6cJKqWxU8IOkt3pOhFg=; fh=kv9vKj/5lnGCIOTbZ6TovGT4MvpEyXaWy0g1gr+yv30=; b=pHf5ucZI5cIKFUe75lEq7deEPI6t0jCeCdfYSYNxPzGDmnx7mnY10V+AvJA9XetHdI UTrxvPh3XcsCKHQkryf8lApg8lQl739xo9wzRxY3KMc1DO8gAMk1hQzhFE0gzxCFLHy7 HbXUAFDvuew/hTVkcKjc2MUYzp37k7vOM3I6c2CedYennalX0+69ViwKAjLVoSb6kuwK Q7i3Y2vbfoV9qs4SypxwjdliGwKuRhjlYt4mQ0QrSZshbJhp0c2HV1Qb4h1oA/YOuyh6 HJwbJjj46YJeHL+LT0ouGQ74Rydb7qBlskVw8ThFK2DUdFp95BLKDfbk4yvuyOyscesv DEpA== ARC-Authentication-Results: i=1; mx.google.com; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.38 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: from fry.vger.email (fry.vger.email. [23.128.96.38]) by mx.google.com with ESMTPS id t64-20020a638143000000b005c65c11acf6si5681852pgd.774.2023.12.05.04.39.37 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 05 Dec 2023 04:39:37 -0800 (PST) Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.38 as permitted sender) client-ip=23.128.96.38; Authentication-Results: mx.google.com; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.38 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: from out1.vger.email (depot.vger.email [IPv6:2620:137:e000::3:0]) by fry.vger.email (Postfix) with ESMTP id 2195B80A5641; Tue, 5 Dec 2023 04:39:32 -0800 (PST) X-Virus-Status: Clean X-Virus-Scanned: clamav-milter 0.103.11 at fry.vger.email Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1345310AbjLEMjL (ORCPT + 99 others); Tue, 5 Dec 2023 07:39:11 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:56244 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1345324AbjLEMiw (ORCPT ); Tue, 5 Dec 2023 07:38:52 -0500 Received: from dggsgout12.his.huawei.com (unknown [45.249.212.56]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id AFF7ED5A; Tue, 5 Dec 2023 04:38:50 -0800 (PST) Received: from mail.maildlp.com (unknown [172.19.163.235]) by dggsgout12.his.huawei.com (SkyGuard) with ESMTP id 4Sl0T15mxxz4f3knk; Tue, 5 Dec 2023 20:38:45 +0800 (CST) Received: from mail02.huawei.com (unknown [10.116.40.112]) by mail.maildlp.com (Postfix) with ESMTP id F101B1A0CAC; Tue, 5 Dec 2023 20:38:47 +0800 (CST) Received: from huaweicloud.com (unknown [10.175.104.67]) by APP1 (Coremail) with SMTP id cCh0CgDnNw7GGW9lr8E8Cw--.35507S14; Tue, 05 Dec 2023 20:38:47 +0800 (CST) From: Yu Kuai To: axboe@kernel.dk, roger.pau@citrix.com, colyli@suse.de, kent.overstreet@gmail.com, joern@lazybastard.org, miquel.raynal@bootlin.com, richard@nod.at, vigneshr@ti.com, sth@linux.ibm.com, hoeppner@linux.ibm.com, hca@linux.ibm.com, gor@linux.ibm.com, agordeev@linux.ibm.com, jejb@linux.ibm.com, martin.petersen@oracle.com, clm@fb.com, josef@toxicpanda.com, dsterba@suse.com, nico@fluxnic.net, xiang@kernel.org, chao@kernel.org, tytso@mit.edu, adilger.kernel@dilger.ca, agruenba@redhat.com, jack@suse.com, konishi.ryusuke@gmail.com, willy@infradead.org, akpm@linux-foundation.org, hare@suse.de, p.raghav@samsung.com Cc: linux-block@vger.kernel.org, linux-kernel@vger.kernel.org, xen-devel@lists.xenproject.org, linux-bcache@vger.kernel.org, linux-mtd@lists.infradead.org, linux-s390@vger.kernel.org, linux-scsi@vger.kernel.org, linux-bcachefs@vger.kernel.org, linux-btrfs@vger.kernel.org, linux-erofs@lists.ozlabs.org, linux-ext4@vger.kernel.org, gfs2@lists.linux.dev, linux-nilfs@vger.kernel.org, yukuai3@huawei.com, yukuai1@huaweicloud.com, yi.zhang@huawei.com, yangerkun@huawei.com Subject: [PATCH -next RFC 10/14] erofs: use bdev api Date: Tue, 5 Dec 2023 20:37:24 +0800 Message-Id: <20231205123728.1866699-11-yukuai1@huaweicloud.com> X-Mailer: git-send-email 2.39.2 In-Reply-To: <20231205123728.1866699-1-yukuai1@huaweicloud.com> References: <20231205123728.1866699-1-yukuai1@huaweicloud.com> MIME-Version: 1.0 X-CM-TRANSID: cCh0CgDnNw7GGW9lr8E8Cw--.35507S14 X-Coremail-Antispam: 1UD129KBjvJXoW7ZF4kGw13Gw48JryUZw45Awb_yoW8trW5pF W3Cr1fGrWrXrn09wn2gr4UXr43ta97Jw48CayxJw1Fv3yUtryagFy0ywnrGr4UKr4vkrs2 qF1IvrWxCw1UGrDanT9S1TB71UUUUUUqnTZGkaVYY2UrUUUUjbIjqfuFe4nvWSU5nxnvy2 9KBjDU0xBIdaVrnRJUUUPF14x267AKxVWrJVCq3wAFc2x0x2IEx4CE42xK8VAvwI8IcIk0 rVWrJVCq3wAFIxvE14AKwVWUJVWUGwA2048vs2IY020E87I2jVAFwI0_JF0E3s1l82xGYI kIc2x26xkF7I0E14v26ryj6s0DM28lY4IEw2IIxxk0rwA2F7IY1VAKz4vEj48ve4kI8wA2 z4x0Y4vE2Ix0cI8IcVAFwI0_Ar0_tr1l84ACjcxK6xIIjxv20xvEc7CjxVAFwI0_Cr1j6r xdM28EF7xvwVC2z280aVAFwI0_GcCE3s1l84ACjcxK6I8E87Iv6xkF7I0E14v26rxl6s0D M2AIxVAIcxkEcVAq07x20xvEncxIr21l5I8CrVACY4xI64kE6c02F40Ex7xfMcIj6xIIjx v20xvE14v26r1Y6r17McIj6I8E87Iv67AKxVWUJVW8JwAm72CE4IkC6x0Yz7v_Jr0_Gr1l F7xvr2IYc2Ij64vIr41lF7I21c0EjII2zVCS5cI20VAGYxC7M4IIrI8v6xkF7I0E8cxan2 IY04v7MxAIw28IcxkI7VAKI48JMxC20s026xCaFVCjc4AY6r1j6r4UMI8I3I0E5I8CrVAF wI0_Jr0_Jr4lx2IqxVCjr7xvwVAFwI0_JrI_JrWlx4CE17CEb7AF67AKxVWrXVW8Jr1lIx kGc2Ij64vIr41lIxAIcVC0I7IYx2IY67AKxVW8JVW5JwCI42IY6xIIjxv20xvEc7CjxVAF wI0_Cr1j6rxdMIIF0xvE42xK8VAvwI8IcIk0rVWUJVWUCwCI42IY6I8E87Iv67AKxVW8JV WxJwCI42IY6I8E87Iv6xkF7I0E14v26F4UJVW0obIYCTnIWIevJa73UjIFyTuYvjfUoxhL UUUUU X-CM-SenderInfo: 51xn3trlr6x35dzhxuhorxvhhfrp/ X-Spam-Status: No, score=-0.8 required=5.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,T_SCC_BODY_TEXT_LINE autolearn=unavailable autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on fry.vger.email Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org X-Greylist: Sender passed SPF test, not delayed by milter-greylist-4.6.4 (fry.vger.email [0.0.0.0]); Tue, 05 Dec 2023 04:39:32 -0800 (PST) X-getmail-retrieved-from-mailbox: INBOX X-GMAIL-THRID: 1784445641616294521 X-GMAIL-MSGID: 1784445641616294521 From: Yu Kuai Avoid to access bd_inode directly, prepare to remove bd_inode from block_devcie. Signed-off-by: Yu Kuai --- fs/erofs/data.c | 17 +++++++++++------ fs/erofs/internal.h | 1 + 2 files changed, 12 insertions(+), 6 deletions(-) diff --git a/fs/erofs/data.c b/fs/erofs/data.c index c98aeda8abb2..b9d2c90f9b22 100644 --- a/fs/erofs/data.c +++ b/fs/erofs/data.c @@ -32,8 +32,8 @@ void erofs_put_metabuf(struct erofs_buf *buf) void *erofs_bread(struct erofs_buf *buf, erofs_blk_t blkaddr, enum erofs_kmap_type type) { - struct inode *inode = buf->inode; - erofs_off_t offset = (erofs_off_t)blkaddr << inode->i_blkbits; + u8 blkbits = buf->inode ? buf->inode->i_blkbits : block_bits(buf->bdev); + erofs_off_t offset = (erofs_off_t)blkaddr << blkbits; pgoff_t index = offset >> PAGE_SHIFT; struct page *page = buf->page; struct folio *folio; @@ -43,7 +43,9 @@ void *erofs_bread(struct erofs_buf *buf, erofs_blk_t blkaddr, erofs_put_metabuf(buf); nofs_flag = memalloc_nofs_save(); - folio = read_cache_folio(inode->i_mapping, index, NULL, NULL); + folio = buf->inode ? + read_mapping_folio(buf->inode->i_mapping, index, NULL) : + bdev_read_folio(buf->bdev, index); memalloc_nofs_restore(nofs_flag); if (IS_ERR(folio)) return folio; @@ -67,10 +69,13 @@ void *erofs_bread(struct erofs_buf *buf, erofs_blk_t blkaddr, void erofs_init_metabuf(struct erofs_buf *buf, struct super_block *sb) { - if (erofs_is_fscache_mode(sb)) + if (erofs_is_fscache_mode(sb)) { buf->inode = EROFS_SB(sb)->s_fscache->inode; - else - buf->inode = sb->s_bdev->bd_inode; + buf->bdev = NULL; + } else { + buf->inode = NULL; + buf->bdev = sb->s_bdev; + } } void *erofs_read_metabuf(struct erofs_buf *buf, struct super_block *sb, diff --git a/fs/erofs/internal.h b/fs/erofs/internal.h index b0409badb017..a68b0924c052 100644 --- a/fs/erofs/internal.h +++ b/fs/erofs/internal.h @@ -224,6 +224,7 @@ enum erofs_kmap_type { struct erofs_buf { struct inode *inode; + struct block_device *bdev; struct page *page; void *base; enum erofs_kmap_type kmap_type;