From patchwork Tue Dec 5 12:37:22 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Yu Kuai X-Patchwork-Id: 13480175 Received: from dggsgout11.his.huawei.com (dggsgout11.his.huawei.com [45.249.212.51]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 9F90E1A1; Tue, 5 Dec 2023 04:38:47 -0800 (PST) Received: from mail.maildlp.com (unknown [172.19.163.235]) by dggsgout11.his.huawei.com (SkyGuard) with ESMTP id 4Sl0Sw2TvYz4f3lW2; Tue, 5 Dec 2023 20:38:40 +0800 (CST) Received: from mail02.huawei.com (unknown [10.116.40.112]) by mail.maildlp.com (Postfix) with ESMTP id 050481A0C85; Tue, 5 Dec 2023 20:38:45 +0800 (CST) Received: from huaweicloud.com (unknown [10.175.104.67]) by APP1 (Coremail) with SMTP id cCh0CgDnNw7GGW9lr8E8Cw--.35507S12; Tue, 05 Dec 2023 20:38:44 +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 08/14] btrfs: use bdev apis Date: Tue, 5 Dec 2023 20:37:22 +0800 Message-Id: <20231205123728.1866699-9-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> Precedence: bulk X-Mailing-List: linux-btrfs@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-CM-TRANSID: cCh0CgDnNw7GGW9lr8E8Cw--.35507S12 X-Coremail-Antispam: 1UD129KBjvJXoW3JFW5WF1UtFWDury7AFyfXrb_yoW3Kr45pr W7CF95trWUJrn8Ww4kWw4kAw1Sq3sFvay8CF9xGw4Ska45t3sYgFyvy34Fqa4Fkry8JF97 XF4UtFWxuF1IkF7anT9S1TB71UUUUUUqnTZGkaVYY2UrUUUUjbIjqfuFe4nvWSU5nxnvy2 9KBjDU0xBIdaVrnRJUUUPa14x267AKxVWrJVCq3wAFc2x0x2IEx4CE42xK8VAvwI8IcIk0 rVWrJVCq3wAFIxvE14AKwVWUJVWUGwA2048vs2IY020E87I2jVAFwI0_JF0E3s1l82xGYI kIc2x26xkF7I0E14v26ryj6s0DM28lY4IEw2IIxxk0rwA2F7IY1VAKz4vEj48ve4kI8wA2 z4x0Y4vE2Ix0cI8IcVAFwI0_Ar0_tr1l84ACjcxK6xIIjxv20xvEc7CjxVAFwI0_Gr1j6F 4UJwA2z4x0Y4vEx4A2jsIE14v26rxl6s0DM28EF7xvwVC2z280aVCY1x0267AKxVW0oVCq 3wAS0I0E0xvYzxvE52x082IY62kv0487Mc02F40EFcxC0VAKzVAqx4xG6I80ewAv7VC0I7 IYx2IY67AKxVWUXVWUAwAv7VC2z280aVAFwI0_Jr0_Gr1lOx8S6xCaFVCjc4AY6r1j6r4U M4x0Y48IcxkI7VAKI48JM4x0x7Aq67IIx4CEVc8vx2IErcIFxwACI402YVCY1x02628vn2 kIc2xKxwCF04k20xvY0x0EwIxGrwCFx2IqxVCFs4IE7xkEbVWUJVW8JwC20s026c02F40E 14v26r1j6r18MI8I3I0E7480Y4vE14v26r106r1rMI8E67AF67kF1VAFwI0_Wrv_Gr1UMI IYrxkI7VAKI48JMIIF0xvE2Ix0cI8IcVAFwI0_JFI_Gr1lIxAIcVC0I7IYx2IY6xkF7I0E 14v26r4UJVWxJr1lIxAIcVCF04k26cxKx2IYs7xG6r1j6r1xMIIF0xvEx4A2jsIE14v26r 4j6F4UMIIF0xvEx4A2jsIEc7CjxVAFwI0_Gr1j6F4UJbIYCTnIWIevJa73UjIFyTuYvjfU oxhLUUUUU X-CM-SenderInfo: 51xn3trlr6x35dzhxuhorxvhhfrp/ 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 --- fs/btrfs/disk-io.c | 68 ++++++++++++++++++++-------------------------- fs/btrfs/volumes.c | 17 ++++++------ fs/btrfs/zoned.c | 12 ++++---- 3 files changed, 42 insertions(+), 55 deletions(-) diff --git a/fs/btrfs/disk-io.c b/fs/btrfs/disk-io.c index 9317606017e2..cfe7ea417760 100644 --- a/fs/btrfs/disk-io.c +++ b/fs/btrfs/disk-io.c @@ -3597,28 +3597,24 @@ ALLOW_ERROR_INJECTION(open_ctree, ERRNO); static void btrfs_end_super_write(struct bio *bio) { struct btrfs_device *device = bio->bi_private; - struct bio_vec *bvec; - struct bvec_iter_all iter_all; - struct page *page; - - bio_for_each_segment_all(bvec, bio, iter_all) { - page = bvec->bv_page; + struct folio_iter fi; + bio_for_each_folio_all(fi, bio) { if (bio->bi_status) { btrfs_warn_rl_in_rcu(device->fs_info, "lost page write due to IO error on %s (%d)", btrfs_dev_name(device), blk_status_to_errno(bio->bi_status)); - ClearPageUptodate(page); - SetPageError(page); + folio_clear_uptodate(fi.folio); + folio_set_error(fi.folio); btrfs_dev_stat_inc_and_print(device, BTRFS_DEV_STAT_WRITE_ERRS); } else { - SetPageUptodate(page); + folio_mark_uptodate(fi.folio); } - put_page(page); - unlock_page(page); + folio_put(fi.folio); + folio_unlock(fi.folio); } bio_put(bio); @@ -3628,9 +3624,8 @@ struct btrfs_super_block *btrfs_read_dev_one_super(struct block_device *bdev, int copy_num, bool drop_cache) { struct btrfs_super_block *super; - struct page *page; + struct folio *folio; u64 bytenr, bytenr_orig; - struct address_space *mapping = bdev->bd_inode->i_mapping; int ret; bytenr_orig = btrfs_sb_offset(copy_num); @@ -3651,16 +3646,15 @@ struct btrfs_super_block *btrfs_read_dev_one_super(struct block_device *bdev, * Drop the page of the primary superblock, so later read will * always read from the device. */ - invalidate_inode_pages2_range(mapping, - bytenr >> PAGE_SHIFT, + invalidate_bdev_range(bdev, bytenr >> PAGE_SHIFT, (bytenr + BTRFS_SUPER_INFO_SIZE) >> PAGE_SHIFT); } - page = read_cache_page_gfp(mapping, bytenr >> PAGE_SHIFT, GFP_NOFS); - if (IS_ERR(page)) - return ERR_CAST(page); + folio = bdev_read_folio_gfp(bdev, bytenr >> PAGE_SHIFT, GFP_NOFS); + if (IS_ERR(folio)) + return ERR_CAST(folio); - super = page_address(page); + super = folio_address(folio); if (btrfs_super_magic(super) != BTRFS_MAGIC) { btrfs_release_disk_super(super); return ERR_PTR(-ENODATA); @@ -3717,7 +3711,6 @@ static int write_dev_supers(struct btrfs_device *device, struct btrfs_super_block *sb, int max_mirrors) { struct btrfs_fs_info *fs_info = device->fs_info; - struct address_space *mapping = device->bdev->bd_inode->i_mapping; SHASH_DESC_ON_STACK(shash, fs_info->csum_shash); int i; int errors = 0; @@ -3730,7 +3723,7 @@ static int write_dev_supers(struct btrfs_device *device, shash->tfm = fs_info->csum_shash; for (i = 0; i < max_mirrors; i++) { - struct page *page; + struct folio *folio; struct bio *bio; struct btrfs_super_block *disk_super; @@ -3755,9 +3748,10 @@ static int write_dev_supers(struct btrfs_device *device, BTRFS_SUPER_INFO_SIZE - BTRFS_CSUM_SIZE, sb->csum); - page = find_or_create_page(mapping, bytenr >> PAGE_SHIFT, - GFP_NOFS); - if (!page) { + folio = bdev_find_or_create_folio(device->bdev, + bytenr >> PAGE_SHIFT, + GFP_NOFS); + if (IS_ERR(folio)) { btrfs_err(device->fs_info, "couldn't get super block page for bytenr %llu", bytenr); @@ -3766,9 +3760,9 @@ static int write_dev_supers(struct btrfs_device *device, } /* Bump the refcount for wait_dev_supers() */ - get_page(page); + folio_get(folio); - disk_super = page_address(page); + disk_super = folio_address(folio); memcpy(disk_super, sb, BTRFS_SUPER_INFO_SIZE); /* @@ -3782,8 +3776,8 @@ static int write_dev_supers(struct btrfs_device *device, bio->bi_iter.bi_sector = bytenr >> SECTOR_SHIFT; bio->bi_private = device; bio->bi_end_io = btrfs_end_super_write; - __bio_add_page(bio, page, BTRFS_SUPER_INFO_SIZE, - offset_in_page(bytenr)); + bio_add_folio_nofail(bio, folio, BTRFS_SUPER_INFO_SIZE, + offset_in_folio(folio, bytenr)); /* * We FUA only the first super block. The others we allow to @@ -3819,7 +3813,7 @@ static int wait_dev_supers(struct btrfs_device *device, int max_mirrors) max_mirrors = BTRFS_SUPER_MIRROR_MAX; for (i = 0; i < max_mirrors; i++) { - struct page *page; + struct folio *folio; ret = btrfs_sb_log_location(device, i, READ, &bytenr); if (ret == -ENOENT) { @@ -3834,27 +3828,23 @@ static int wait_dev_supers(struct btrfs_device *device, int max_mirrors) device->commit_total_bytes) break; - page = find_get_page(device->bdev->bd_inode->i_mapping, - bytenr >> PAGE_SHIFT); - if (!page) { + folio = bdev_get_folio(device->bdev, bytenr >> PAGE_SHIFT); + if (!folio) { errors++; if (i == 0) primary_failed = true; continue; } /* Page is submitted locked and unlocked once the IO completes */ - wait_on_page_locked(page); - if (PageError(page)) { + folio_wait_locked(folio); + if (folio_test_error(folio)) { errors++; if (i == 0) primary_failed = true; } - /* Drop our reference */ - put_page(page); - - /* Drop the reference from the writing run */ - put_page(page); + /* Drop our reference and the reference from the writing run */ + folio_put_refs(folio, 2); } /* log error, force error return */ diff --git a/fs/btrfs/volumes.c b/fs/btrfs/volumes.c index 1cc6b5d5eb61..3930495aebd1 100644 --- a/fs/btrfs/volumes.c +++ b/fs/btrfs/volumes.c @@ -1230,16 +1230,16 @@ int btrfs_open_devices(struct btrfs_fs_devices *fs_devices, void btrfs_release_disk_super(struct btrfs_super_block *super) { - struct page *page = virt_to_page(super); + struct folio *folio = virt_to_folio(super); - put_page(page); + folio_put(folio); } static struct btrfs_super_block *btrfs_read_disk_super(struct block_device *bdev, u64 bytenr, u64 bytenr_orig) { struct btrfs_super_block *disk_super; - struct page *page; + struct folio *folio; void *p; pgoff_t index; @@ -1257,15 +1257,14 @@ static struct btrfs_super_block *btrfs_read_disk_super(struct block_device *bdev return ERR_PTR(-EINVAL); /* pull in the page with our super */ - page = read_cache_page_gfp(bdev->bd_inode->i_mapping, index, GFP_KERNEL); + folio = bdev_read_folio_gfp(bdev, index, GFP_KERNEL); + if (IS_ERR(folio)) + return ERR_CAST(folio); - if (IS_ERR(page)) - return ERR_CAST(page); - - p = page_address(page); + p = folio_address(folio); /* align our pointer to the offset of the super block */ - disk_super = p + offset_in_page(bytenr); + disk_super = p + offset_in_folio(folio, bytenr); if (btrfs_super_bytenr(disk_super) != bytenr_orig || btrfs_super_magic(disk_super) != BTRFS_MAGIC) { diff --git a/fs/btrfs/zoned.c b/fs/btrfs/zoned.c index 12066afc235c..77d5f906ff16 100644 --- a/fs/btrfs/zoned.c +++ b/fs/btrfs/zoned.c @@ -120,8 +120,6 @@ static int sb_write_pointer(struct block_device *bdev, struct blk_zone *zones, return -ENOENT; } else if (full[0] && full[1]) { /* Compare two super blocks */ - struct address_space *mapping = bdev->bd_inode->i_mapping; - struct page *page[BTRFS_NR_SB_LOG_ZONES]; struct btrfs_super_block *super[BTRFS_NR_SB_LOG_ZONES]; int i; @@ -129,15 +127,15 @@ static int sb_write_pointer(struct block_device *bdev, struct blk_zone *zones, u64 zone_end = (zones[i].start + zones[i].capacity) << SECTOR_SHIFT; u64 bytenr = ALIGN_DOWN(zone_end, BTRFS_SUPER_INFO_SIZE) - BTRFS_SUPER_INFO_SIZE; - - page[i] = read_cache_page_gfp(mapping, + struct folio *folio = bdev_read_folio_gfp(bdev, bytenr >> PAGE_SHIFT, GFP_NOFS); - if (IS_ERR(page[i])) { + + if (IS_ERR(folio)) { if (i == 1) btrfs_release_disk_super(super[0]); - return PTR_ERR(page[i]); + return PTR_ERR(folio); } - super[i] = page_address(page[i]); + super[i] = folio_address(folio); } if (btrfs_super_generation(super[0]) >