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Tue, 05 Dec 2023 12:39:03 +0000 Received: from dggsgout11.his.huawei.com ([45.249.212.51]) by bombadil.infradead.org with esmtps (Exim 4.96 #2 (Red Hat Linux)) id 1rAUhR-007Op8-09 for linux-mtd@lists.infradead.org; Tue, 05 Dec 2023 12:38:55 +0000 Received: from mail.maildlp.com (unknown [172.19.163.235]) by dggsgout11.his.huawei.com (SkyGuard) with ESMTP id 4Sl0T41DcMz4f3kK0 for ; Tue, 5 Dec 2023 20:38:48 +0800 (CST) Received: from mail02.huawei.com (unknown [10.116.40.112]) by mail.maildlp.com (Postfix) with ESMTP id 36A261A01F2 for ; Tue, 5 Dec 2023 20:38:49 +0800 (CST) Received: from huaweicloud.com (unknown [10.175.104.67]) by APP1 (Coremail) with SMTP id cCh0CgDnNw7GGW9lr8E8Cw--.35507S15; Tue, 05 Dec 2023 20:38:48 +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 11/14] ext4: use bdev apis Date: Tue, 5 Dec 2023 20:37:25 +0800 Message-Id: <20231205123728.1866699-12-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--.35507S15 X-Coremail-Antispam: 1UD129KBjvJXoW3Jr18GF1xAr47Kw47JFyxKrg_yoW7tryUpa sxCFyxArWDuFyj9a97GrsrX3WY9w10kFyxGryxu34avrW2qr9aqFykKF1xAFyFyrW8Zry8 XFWjkrWfCr45KrDanT9S1TB71UUUUUUqnTZGkaVYY2UrUUUUjbIjqfuFe4nvWSU5nxnvy2 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-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20231205_043853_492986_D23D9480 X-CRM114-Status: GOOD ( 13.61 ) X-Spam-Score: 0.0 (/) X-Spam-Report: Spam detection software, running on the system "bombadil.infradead.org", has NOT identified this incoming email as spam. The original message has been attached to this so you can view it or label similar future email. If you have any questions, see the administrator of that system for details. Content preview: From: Yu Kuai Avoid to access bd_inode directly, prepare to remove bd_inode from block_devcie. Signed-off-by: Yu Kuai --- fs/ext4/dir.c | 6 ++---- fs/ext4/ext4_jbd2.c | 6 +++--- fs/ext4/super.c | 27 ++++ include/linux/buffer_head.h | 5 +++-- 4 files c [...] Content analysis details: (0.0 points, 5.0 required) pts rule name description ---- ---------------------- -------------------------------------------------- -0.0 RCVD_IN_MSPIKE_H2 RBL: Average reputation (+2) [45.249.212.51 listed in wl.mailspike.net] 0.0 SPF_HELO_NONE SPF: HELO does not publish an SPF Record 0.0 SPF_NONE SPF: sender does not publish an SPF Record X-BeenThere: linux-mtd@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: Linux MTD discussion mailing list List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-mtd" Errors-To: linux-mtd-bounces+incoming=patchwork.ozlabs.org@lists.infradead.org From: Yu Kuai Avoid to access bd_inode directly, prepare to remove bd_inode from block_devcie. Signed-off-by: Yu Kuai --- fs/ext4/dir.c | 6 ++---- fs/ext4/ext4_jbd2.c | 6 +++--- fs/ext4/super.c | 27 ++++----------------------- include/linux/buffer_head.h | 5 +++-- 4 files changed, 12 insertions(+), 32 deletions(-) diff --git a/fs/ext4/dir.c b/fs/ext4/dir.c index 3985f8c33f95..64e35eb6a324 100644 --- a/fs/ext4/dir.c +++ b/fs/ext4/dir.c @@ -191,10 +191,8 @@ static int ext4_readdir(struct file *file, struct dir_context *ctx) pgoff_t index = map.m_pblk >> (PAGE_SHIFT - inode->i_blkbits); if (!ra_has_index(&file->f_ra, index)) - page_cache_sync_readahead( - sb->s_bdev->bd_inode->i_mapping, - &file->f_ra, file, - index, 1); + bdev_sync_readahead(sb->s_bdev, &file->f_ra, + file, index, 1); file->f_ra.prev_pos = (loff_t)index << PAGE_SHIFT; bh = ext4_bread(NULL, inode, map.m_lblk, 0); if (IS_ERR(bh)) { diff --git a/fs/ext4/ext4_jbd2.c b/fs/ext4/ext4_jbd2.c index d1a2e6624401..c1bf3a00fad9 100644 --- a/fs/ext4/ext4_jbd2.c +++ b/fs/ext4/ext4_jbd2.c @@ -206,7 +206,6 @@ static void ext4_journal_abort_handle(const char *caller, unsigned int line, static void ext4_check_bdev_write_error(struct super_block *sb) { - struct address_space *mapping = sb->s_bdev->bd_inode->i_mapping; struct ext4_sb_info *sbi = EXT4_SB(sb); int err; @@ -216,9 +215,10 @@ static void ext4_check_bdev_write_error(struct super_block *sb) * we could read old data from disk and write it out again, which * may lead to on-disk filesystem inconsistency. */ - if (errseq_check(&mapping->wb_err, READ_ONCE(sbi->s_bdev_wb_err))) { + if (bdev_wb_err_check(sb->s_bdev, READ_ONCE(sbi->s_bdev_wb_err))) { spin_lock(&sbi->s_bdev_wb_lock); - err = errseq_check_and_advance(&mapping->wb_err, &sbi->s_bdev_wb_err); + err = bdev_wb_err_check_and_advance(sb->s_bdev, + &sbi->s_bdev_wb_err); spin_unlock(&sbi->s_bdev_wb_lock); if (err) ext4_error_err(sb, -err, diff --git a/fs/ext4/super.c b/fs/ext4/super.c index 0980845c8b8f..243671d86db3 100644 --- a/fs/ext4/super.c +++ b/fs/ext4/super.c @@ -244,8 +244,7 @@ static struct buffer_head *__ext4_sb_bread_gfp(struct super_block *sb, struct buffer_head *ext4_sb_bread(struct super_block *sb, sector_t block, blk_opf_t op_flags) { - gfp_t gfp = mapping_gfp_constraint(sb->s_bdev->bd_inode->i_mapping, - ~__GFP_FS) | __GFP_MOVABLE; + gfp_t gfp = bdev_gfp_constraint(sb->s_bdev, ~__GFP_FS) | __GFP_MOVABLE; return __ext4_sb_bread_gfp(sb, block, op_flags, gfp); } @@ -253,8 +252,7 @@ struct buffer_head *ext4_sb_bread(struct super_block *sb, sector_t block, struct buffer_head *ext4_sb_bread_unmovable(struct super_block *sb, sector_t block) { - gfp_t gfp = mapping_gfp_constraint(sb->s_bdev->bd_inode->i_mapping, - ~__GFP_FS); + gfp_t gfp = bdev_gfp_constraint(sb->s_bdev, ~__GFP_FS); return __ext4_sb_bread_gfp(sb, block, 0, gfp); } @@ -492,22 +490,6 @@ static void ext4_maybe_update_superblock(struct super_block *sb) schedule_work(&EXT4_SB(sb)->s_sb_upd_work); } -/* - * The del_gendisk() function uninitializes the disk-specific data - * structures, including the bdi structure, without telling anyone - * else. Once this happens, any attempt to call mark_buffer_dirty() - * (for example, by ext4_commit_super), will cause a kernel OOPS. - * This is a kludge to prevent these oops until we can put in a proper - * hook in del_gendisk() to inform the VFS and file system layers. - */ -static int block_device_ejected(struct super_block *sb) -{ - struct inode *bd_inode = sb->s_bdev->bd_inode; - struct backing_dev_info *bdi = inode_to_bdi(bd_inode); - - return bdi->dev == NULL; -} - static void ext4_journal_commit_callback(journal_t *journal, transaction_t *txn) { struct super_block *sb = journal->j_private; @@ -5585,8 +5567,7 @@ static int __ext4_fill_super(struct fs_context *fc, struct super_block *sb) * used to detect the metadata async write error. */ spin_lock_init(&sbi->s_bdev_wb_lock); - errseq_check_and_advance(&sb->s_bdev->bd_inode->i_mapping->wb_err, - &sbi->s_bdev_wb_err); + bdev_wb_err_check_and_advance(sb->s_bdev, &sbi->s_bdev_wb_err); EXT4_SB(sb)->s_mount_state |= EXT4_ORPHAN_FS; ext4_orphan_cleanup(sb, es); EXT4_SB(sb)->s_mount_state &= ~EXT4_ORPHAN_FS; @@ -6185,7 +6166,7 @@ static int ext4_commit_super(struct super_block *sb) if (!sbh) return -EINVAL; - if (block_device_ejected(sb)) + if (bdev_ejected(sb->s_bdev)) return -ENODEV; ext4_update_super(sb); diff --git a/include/linux/buffer_head.h b/include/linux/buffer_head.h index 5f23ee599889..3a88b295b4f2 100644 --- a/include/linux/buffer_head.h +++ b/include/linux/buffer_head.h @@ -15,6 +15,7 @@ #include #include #include +#include enum bh_state_bits { BH_Uptodate, /* Contains valid data */ @@ -341,7 +342,7 @@ static inline struct buffer_head *getblk_unmovable(struct block_device *bdev, { gfp_t gfp; - gfp = mapping_gfp_constraint(bdev->bd_inode->i_mapping, ~__GFP_FS); + gfp = bdev_gfp_constraint(bdev, ~__GFP_FS); gfp |= __GFP_NOFAIL; return bdev_getblk(bdev, block, size, gfp); @@ -352,7 +353,7 @@ static inline struct buffer_head *__getblk(struct block_device *bdev, { gfp_t gfp; - gfp = mapping_gfp_constraint(bdev->bd_inode->i_mapping, ~__GFP_FS); + gfp = bdev_gfp_constraint(bdev, ~__GFP_FS); gfp |= __GFP_MOVABLE | __GFP_NOFAIL; return bdev_getblk(bdev, block, size, gfp);