From patchwork Thu Feb 22 12:45:55 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Yu Kuai X-Patchwork-Id: 13567276 Received: from dggsgout12.his.huawei.com (unknown [45.249.212.56]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id B27361420B8; Thu, 22 Feb 2024 12:51:43 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=45.249.212.56 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1708606308; cv=none; b=q3Hdkp/S8L7eM0692x01DPjpgOKAci16XMuoJ78Z85qrubcSHK45RlLoBNDnslqN5/jYCiQeK1K9D9wbWISq/OwxVMq9MqOFWOUHuw68C+1YY5H40rZr/xaJWQOAuhL/A4NHeq3zrzt2mWlN8fEGwkWQzJ42lkhhHCk3CiwQudA= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1708606308; c=relaxed/simple; bh=Tcq+PIlYGWcI67qbfsNhUIbVZ3a0YSfb2efcNOsCgao=; h=From:To:Cc:Subject:Date:Message-Id:In-Reply-To:References: MIME-Version; b=t51NaNJ5uEKjkdUQzdAW5rJl9xFOKBrJOhTU6OTEPMSa/hg2dChLvCmrsW17zNNT/hTitHhJjp8DjCFz03TOs/cQh/a94fNZk1pNzzj4bV+JHWI57H4MJkudpH9b6gOjRnT38jPiM2snoKsQe4/7EC5efIoBSQjsnDEYgtwQoGg= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=huaweicloud.com; spf=pass smtp.mailfrom=huaweicloud.com; arc=none smtp.client-ip=45.249.212.56 Authentication-Results: smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=huaweicloud.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=huaweicloud.com Received: from mail.maildlp.com (unknown [172.19.163.216]) by dggsgout12.his.huawei.com (SkyGuard) with ESMTP id 4TgY1M6ZhBz4f3jcv; Thu, 22 Feb 2024 20:51:35 +0800 (CST) Received: from mail02.huawei.com (unknown [10.116.40.112]) by mail.maildlp.com (Postfix) with ESMTP id E81481A0DDE; Thu, 22 Feb 2024 20:51:40 +0800 (CST) Received: from huaweicloud.com (unknown [10.175.104.67]) by APP1 (Coremail) with SMTP id cCh0CgBHGBFSQ9dlQ382Ew--.47909S23; Thu, 22 Feb 2024 20:51:40 +0800 (CST) From: Yu Kuai To: jack@suse.cz, hch@lst.de, brauner@kernel.org, axboe@kernel.dk Cc: linux-fsdevel@vger.kernel.org, linux-block@vger.kernel.org, yukuai3@huawei.com, yukuai1@huaweicloud.com, yi.zhang@huawei.com, yangerkun@huawei.com Subject: [RFC v4 linux-next 19/19] fs & block: remove bdev->bd_inode Date: Thu, 22 Feb 2024 20:45:55 +0800 Message-Id: <20240222124555.2049140-20-yukuai1@huaweicloud.com> X-Mailer: git-send-email 2.39.2 In-Reply-To: <20240222124555.2049140-1-yukuai1@huaweicloud.com> References: <20240222124555.2049140-1-yukuai1@huaweicloud.com> Precedence: bulk X-Mailing-List: linux-block@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-CM-TRANSID: cCh0CgBHGBFSQ9dlQ382Ew--.47909S23 X-Coremail-Antispam: 1UD129KBjvAXoWDGr4DWF43Cw17ZryDZFW7CFg_yoWxtr1fXo Waqw4fXr4rK3yUJ3yIkryFqryUZayDtw13JF4rWFZ8Zas3tw1j93y3Kw47Xa4fG3WFkryY gryfJw45WF4Uur48n29KB7ZKAUJUUUUU529EdanIXcx71UUUUU7v73VFW2AGmfu7bjvjm3 AaLaJ3UjIYCTnIWjp_UUUO07AC8VAFwI0_Wr0E3s1l1xkIjI8I6I8E6xAIw20EY4v20xva j40_Wr0E3s1l1IIY67AEw4v_Jr0_Jr4l82xGYIkIc2x26280x7IE14v26r126s0DM28Irc Ia0xkI8VCY1x0267AKxVW5JVCq3wA2ocxC64kIII0Yj41l84x0c7CEw4AK67xGY2AK021l 84ACjcxK6xIIjxv20xvE14v26F1j6w1UM28EF7xvwVC0I7IYx2IY6xkF7I0E14v26r4UJV WxJr1l84ACjcxK6I8E87Iv67AKxVW0oVCq3wA2z4x0Y4vEx4A2jsIEc7CjxVAFwI0_GcCE 3s1le2I262IYc4CY6c8Ij28IcVAaY2xG8wAqx4xG64xvF2IEw4CE5I8CrVC2j2WlYx0E2I x0cI8IcVAFwI0_Jr0_Jr4lYx0Ex4A2jsIE14v26r1j6r4UMcvjeVCFs4IE7xkEbVWUJVW8 JwACjcxG0xvY0x0EwIxGrwACjI8F5VA0II8E6IAqYI8I648v4I1lFIxGxcIEc7CjxVA2Y2 ka0xkIwI1l42xK82IYc2Ij64vIr41l4I8I3I0E4IkC6x0Yz7v_Jr0_Gr1lx2IqxVAqx4xG 67AKxVWUJVWUGwC20s026x8GjcxK67AKxVWUGVWUWwC2zVAF1VAY17CE14v26r1q6r43MI IYrxkI7VAKI48JMIIF0xvE2Ix0cI8IcVAFwI0_Gr0_Xr1lIxAIcVC0I7IYx2IY6xkF7I0E 14v26r4UJVWxJr1lIxAIcVCF04k26cxKx2IYs7xG6r1j6r1xMIIF0xvEx4A2jsIE14v26r 4j6F4UMIIF0xvEx4A2jsIEc7CjxVAFwI0_Gr1j6F4UJbIYCTnIWIevJa73UjIFyTuYvjfU OBTYUUUUU X-CM-SenderInfo: 51xn3trlr6x35dzhxuhorxvhhfrp/ From: Yu Kuai In prior patches we introduced the ability to open block devices as files and made all filesystems stash the opened block device files. With this patch we remove bdev->bd_inode from struct block_device. Using files allows us to stop passing struct block_device directly to almost all buffer_head helpers. Whenever access to the inode of the block device is needed bdev_file_inode(bdev_file) can be used instead of bdev->bd_inode. The only user that doesn't rely on files is the block layer itself in block/fops.c where we only have access to the block device. As the bdev filesystem doesn't open block devices as files obviously. This introduces a union into struct buffer_head and struct iomap. The union encompasses both struct block_device and struct file. In both cases a flag is used to differentiate whether a block device or a proper file was stashed. Simple accessors bh_bdev() and iomap_bdev() are used to return the block device in the really low-level functions where it's needed. These are overall just a few callsites. Originally-by: Christian Brauner Signed-off-by: Yu Kuai --- block/bdev.c | 8 ++- block/fops.c | 2 + drivers/md/md-bitmap.c | 2 +- fs/affs/file.c | 2 +- fs/btrfs/inode.c | 2 +- fs/buffer.c | 103 +++++++++++++++++++--------------- fs/direct-io.c | 4 +- fs/erofs/data.c | 3 +- fs/erofs/internal.h | 1 + fs/erofs/zmap.c | 2 +- fs/ext2/inode.c | 4 +- fs/ext2/xattr.c | 2 +- fs/ext4/inode.c | 8 +-- fs/ext4/mmp.c | 2 +- fs/ext4/page-io.c | 5 +- fs/ext4/super.c | 4 +- fs/ext4/xattr.c | 2 +- fs/f2fs/data.c | 7 ++- fs/f2fs/f2fs.h | 1 + fs/fuse/dax.c | 2 +- fs/gfs2/aops.c | 2 +- fs/gfs2/bmap.c | 2 +- fs/gfs2/meta_io.c | 2 +- fs/hpfs/file.c | 2 +- fs/iomap/buffered-io.c | 8 +-- fs/iomap/direct-io.c | 11 ++-- fs/iomap/swapfile.c | 2 +- fs/iomap/trace.h | 2 +- fs/jbd2/commit.c | 2 +- fs/jbd2/journal.c | 8 +-- fs/jbd2/recovery.c | 8 +-- fs/jbd2/revoke.c | 13 +++-- fs/jbd2/transaction.c | 8 +-- fs/mpage.c | 26 ++++++--- fs/nilfs2/btnode.c | 4 +- fs/nilfs2/gcinode.c | 2 +- fs/nilfs2/mdt.c | 2 +- fs/nilfs2/page.c | 4 +- fs/nilfs2/recovery.c | 27 +++++---- fs/ntfs3/fsntfs.c | 8 +-- fs/ntfs3/inode.c | 2 +- fs/ntfs3/super.c | 2 +- fs/ocfs2/journal.c | 2 +- fs/reiserfs/fix_node.c | 2 +- fs/reiserfs/journal.c | 10 ++-- fs/reiserfs/prints.c | 4 +- fs/reiserfs/reiserfs.h | 6 +- fs/reiserfs/stree.c | 2 +- fs/reiserfs/tail_conversion.c | 2 +- fs/xfs/xfs_iomap.c | 4 +- fs/zonefs/file.c | 4 +- include/linux/blk_types.h | 1 - include/linux/blkdev.h | 2 + include/linux/buffer_head.h | 73 +++++++++++++++--------- include/linux/iomap.h | 14 ++++- include/trace/events/block.h | 2 +- 56 files changed, 259 insertions(+), 182 deletions(-) diff --git a/block/bdev.c b/block/bdev.c index b7af04d34af2..98c192ff81ec 100644 --- a/block/bdev.c +++ b/block/bdev.c @@ -412,7 +412,6 @@ struct block_device *bdev_alloc(struct gendisk *disk, u8 partno) spin_lock_init(&bdev->bd_size_lock); mutex_init(&bdev->bd_holder_lock); bdev->bd_partno = partno; - bdev->bd_inode = inode; bdev->bd_queue = disk->queue; if (partno) bdev->bd_has_submit_bio = disk->part0->bd_has_submit_bio; @@ -1230,6 +1229,13 @@ struct folio *bdev_read_folio(struct block_device *bdev, loff_t pos) } EXPORT_SYMBOL_GPL(bdev_read_folio); +void clean_bdev_aliases2(struct block_device *bdev, sector_t block, + sector_t len) +{ + return __clean_bdev_aliases(bdev_inode(bdev), block, len); +} +EXPORT_SYMBOL_GPL(clean_bdev_aliases2); + static int __init setup_bdev_allow_write_mounted(char *str) { if (kstrtobool(str, &bdev_allow_write_mounted)) diff --git a/block/fops.c b/block/fops.c index 1fcbdb131a8f..5550f8b53c21 100644 --- a/block/fops.c +++ b/block/fops.c @@ -386,6 +386,7 @@ static int blkdev_iomap_begin(struct inode *inode, loff_t offset, loff_t length, loff_t isize = i_size_read(inode); iomap->bdev = bdev; + iomap->flags |= IOMAP_F_BDEV; iomap->offset = ALIGN_DOWN(offset, bdev_logical_block_size(bdev)); if (iomap->offset >= isize) return -EIO; @@ -407,6 +408,7 @@ static int blkdev_get_block(struct inode *inode, sector_t iblock, bh->b_bdev = I_BDEV(inode); bh->b_blocknr = iblock; set_buffer_mapped(bh); + set_buffer_bdev(bh); return 0; } diff --git a/drivers/md/md-bitmap.c b/drivers/md/md-bitmap.c index 9672f75c3050..689f5f543520 100644 --- a/drivers/md/md-bitmap.c +++ b/drivers/md/md-bitmap.c @@ -380,7 +380,7 @@ static int read_file_page(struct file *file, unsigned long index, } bh->b_blocknr = block; - bh->b_bdev = inode->i_sb->s_bdev; + bh->b_bdev_file = inode->i_sb->s_bdev_file; if (count < blocksize) count = 0; else diff --git a/fs/affs/file.c b/fs/affs/file.c index 04c018e19602..c0583831c58f 100644 --- a/fs/affs/file.c +++ b/fs/affs/file.c @@ -365,7 +365,7 @@ affs_get_block(struct inode *inode, sector_t block, struct buffer_head *bh_resul err_alloc: brelse(ext_bh); clear_buffer_mapped(bh_result); - bh_result->b_bdev = NULL; + bh_result->b_bdev_file = NULL; // unlock cache affs_unlock_ext(inode); return -ENOSPC; diff --git a/fs/btrfs/inode.c b/fs/btrfs/inode.c index df55dd891137..b3b2e01093dd 100644 --- a/fs/btrfs/inode.c +++ b/fs/btrfs/inode.c @@ -7716,7 +7716,7 @@ static int btrfs_dio_iomap_begin(struct inode *inode, loff_t start, iomap->type = IOMAP_MAPPED; } iomap->offset = start; - iomap->bdev = fs_info->fs_devices->latest_dev->bdev; + iomap->bdev_file = fs_info->fs_devices->latest_dev->bdev_file; iomap->length = len; free_extent_map(em); diff --git a/fs/buffer.c b/fs/buffer.c index b55dea034a5d..5753c068ec78 100644 --- a/fs/buffer.c +++ b/fs/buffer.c @@ -129,7 +129,7 @@ static void buffer_io_error(struct buffer_head *bh, char *msg) if (!test_bit(BH_Quiet, &bh->b_state)) printk_ratelimited(KERN_ERR "Buffer I/O error on dev %pg, logical block %llu%s\n", - bh->b_bdev, (unsigned long long)bh->b_blocknr, msg); + bh_bdev(bh), (unsigned long long)bh->b_blocknr, msg); } /* @@ -187,9 +187,9 @@ EXPORT_SYMBOL(end_buffer_write_sync); * succeeds, there is no need to take i_private_lock. */ static struct buffer_head * -__find_get_block_slow(struct block_device *bdev, sector_t block) +__find_get_block_slow(struct file *bdev_file, sector_t block) { - struct inode *bd_inode = bdev->bd_inode; + struct inode *bd_inode = file_inode(bdev_file); struct address_space *bd_mapping = bd_inode->i_mapping; struct buffer_head *ret = NULL; pgoff_t index; @@ -232,7 +232,7 @@ __find_get_block_slow(struct block_device *bdev, sector_t block) "device %pg blocksize: %d\n", (unsigned long long)block, (unsigned long long)bh->b_blocknr, - bh->b_state, bh->b_size, bdev, + bh->b_state, bh->b_size, file_bdev(bdev_file), 1 << bd_inode->i_blkbits); } out_unlock: @@ -473,7 +473,7 @@ EXPORT_SYMBOL(mark_buffer_async_write); * try_to_free_buffers() will be operating against the *blockdev* mapping * at the time, not against the S_ISREG file which depends on those buffers. * So the locking for i_private_list is via the i_private_lock in the address_space - * which backs the buffers. Which is different from the address_space + * which backs the buffers. Which is different from the address_space * against which the buffers are listed. So for a particular address_space, * mapping->i_private_lock does *not* protect mapping->i_private_list! In fact, * mapping->i_private_list will always be protected by the backing blockdev's @@ -655,10 +655,12 @@ EXPORT_SYMBOL(generic_buffers_fsync); * `bblock + 1' is probably a dirty indirect block. Hunt it down and, if it's * dirty, schedule it for IO. So that indirects merge nicely with their data. */ -void write_boundary_block(struct block_device *bdev, +void write_boundary_block(struct file *bdev_file, sector_t bblock, unsigned blocksize) { - struct buffer_head *bh = __find_get_block(bdev, bblock + 1, blocksize); + struct buffer_head *bh = + __find_get_block(bdev_file, bblock + 1, blocksize); + if (bh) { if (buffer_dirty(bh)) write_dirty_buffer(bh, 0); @@ -994,8 +996,9 @@ static sector_t blkdev_max_block(struct block_device *bdev, unsigned int size) * Initialise the state of a blockdev folio's buffers. */ static sector_t folio_init_buffers(struct folio *folio, - struct block_device *bdev, unsigned size) + struct file *bdev_file, unsigned int size) { + struct block_device *bdev = file_bdev(bdev_file); struct buffer_head *head = folio_buffers(folio); struct buffer_head *bh = head; bool uptodate = folio_test_uptodate(folio); @@ -1006,7 +1009,7 @@ static sector_t folio_init_buffers(struct folio *folio, if (!buffer_mapped(bh)) { bh->b_end_io = NULL; bh->b_private = NULL; - bh->b_bdev = bdev; + bh->b_bdev_file = bdev_file; bh->b_blocknr = block; if (uptodate) set_buffer_uptodate(bh); @@ -1031,10 +1034,10 @@ static sector_t folio_init_buffers(struct folio *folio, * Returns false if we have a failure which cannot be cured by retrying * without sleeping. Returns true if we succeeded, or the caller should retry. */ -static bool grow_dev_folio(struct block_device *bdev, sector_t block, +static bool grow_dev_folio(struct file *bdev_file, sector_t block, pgoff_t index, unsigned size, gfp_t gfp) { - struct inode *inode = bdev->bd_inode; + struct inode *inode = file_inode(bdev_file); struct folio *folio; struct buffer_head *bh; sector_t end_block = 0; @@ -1047,7 +1050,7 @@ static bool grow_dev_folio(struct block_device *bdev, sector_t block, bh = folio_buffers(folio); if (bh) { if (bh->b_size == size) { - end_block = folio_init_buffers(folio, bdev, size); + end_block = folio_init_buffers(folio, bdev_file, size); goto unlock; } @@ -1075,7 +1078,7 @@ static bool grow_dev_folio(struct block_device *bdev, sector_t block, */ spin_lock(&inode->i_mapping->i_private_lock); link_dev_buffers(folio, bh); - end_block = folio_init_buffers(folio, bdev, size); + end_block = folio_init_buffers(folio, bdev_file, size); spin_unlock(&inode->i_mapping->i_private_lock); unlock: folio_unlock(folio); @@ -1088,7 +1091,7 @@ static bool grow_dev_folio(struct block_device *bdev, sector_t block, * that folio was dirty, the buffers are set dirty also. Returns false * if we've hit a permanent error. */ -static bool grow_buffers(struct block_device *bdev, sector_t block, +static bool grow_buffers(struct file *bdev_file, sector_t block, unsigned size, gfp_t gfp) { loff_t pos; @@ -1100,18 +1103,19 @@ static bool grow_buffers(struct block_device *bdev, sector_t block, if (check_mul_overflow(block, (sector_t)size, &pos) || pos > MAX_LFS_FILESIZE) { printk(KERN_ERR "%s: requested out-of-range block %llu for device %pg\n", __func__, (unsigned long long)block, - bdev); + file_bdev(bdev_file)); return false; } /* Create a folio with the proper size buffers */ - return grow_dev_folio(bdev, block, pos / PAGE_SIZE, size, gfp); + return grow_dev_folio(bdev_file, block, pos / PAGE_SIZE, size, gfp); } static struct buffer_head * -__getblk_slow(struct block_device *bdev, sector_t block, - unsigned size, gfp_t gfp) +__getblk_slow(struct file *bdev_file, sector_t block, unsigned size, gfp_t gfp) { + struct block_device *bdev = file_bdev(bdev_file); + /* Size must be multiple of hard sectorsize */ if (unlikely(size & (bdev_logical_block_size(bdev)-1) || (size < 512 || size > PAGE_SIZE))) { @@ -1127,11 +1131,11 @@ __getblk_slow(struct block_device *bdev, sector_t block, for (;;) { struct buffer_head *bh; - bh = __find_get_block(bdev, block, size); + bh = __find_get_block(bdev_file, block, size); if (bh) return bh; - if (!grow_buffers(bdev, block, size, gfp)) + if (!grow_buffers(bdev_file, block, size, gfp)) return NULL; } } @@ -1367,7 +1371,7 @@ lookup_bh_lru(struct block_device *bdev, sector_t block, unsigned size) for (i = 0; i < BH_LRU_SIZE; i++) { struct buffer_head *bh = __this_cpu_read(bh_lrus.bhs[i]); - if (bh && bh->b_blocknr == block && bh->b_bdev == bdev && + if (bh && bh->b_blocknr == block && bh_bdev(bh) == bdev && bh->b_size == size) { if (i) { while (i) { @@ -1392,13 +1396,14 @@ lookup_bh_lru(struct block_device *bdev, sector_t block, unsigned size) * NULL */ struct buffer_head * -__find_get_block(struct block_device *bdev, sector_t block, unsigned size) +__find_get_block(struct file *bdev_file, sector_t block, unsigned int size) { - struct buffer_head *bh = lookup_bh_lru(bdev, block, size); + struct buffer_head *bh = lookup_bh_lru(file_bdev(bdev_file), block, + size); if (bh == NULL) { /* __find_get_block_slow will mark the page accessed */ - bh = __find_get_block_slow(bdev, block); + bh = __find_get_block_slow(bdev_file, block); if (bh) bh_lru_install(bh); } else @@ -1410,32 +1415,32 @@ EXPORT_SYMBOL(__find_get_block); /** * bdev_getblk - Get a buffer_head in a block device's buffer cache. - * @bdev: The block device. + * @bdev_file: The opened block device. * @block: The block number. - * @size: The size of buffer_heads for this @bdev. + * @size: The size of buffer_heads for this block device. * @gfp: The memory allocation flags to use. * * Return: The buffer head, or NULL if memory could not be allocated. */ -struct buffer_head *bdev_getblk(struct block_device *bdev, sector_t block, +struct buffer_head *bdev_getblk(struct file *bdev_file, sector_t block, unsigned size, gfp_t gfp) { - struct buffer_head *bh = __find_get_block(bdev, block, size); + struct buffer_head *bh = __find_get_block(bdev_file, block, size); might_alloc(gfp); if (bh) return bh; - return __getblk_slow(bdev, block, size, gfp); + return __getblk_slow(bdev_file, block, size, gfp); } EXPORT_SYMBOL(bdev_getblk); /* * Do async read-ahead on a buffer.. */ -void __breadahead(struct block_device *bdev, sector_t block, unsigned size) +void __breadahead(struct file *bdev_file, sector_t block, unsigned int size) { - struct buffer_head *bh = bdev_getblk(bdev, block, size, + struct buffer_head *bh = bdev_getblk(bdev_file, block, size, GFP_NOWAIT | __GFP_MOVABLE); if (likely(bh)) { @@ -1447,7 +1452,7 @@ EXPORT_SYMBOL(__breadahead); /** * __bread_gfp() - reads a specified block and returns the bh - * @bdev: the block_device to read from + * @bdev_file: the opened block_device to read from * @block: number of block * @size: size (in bytes) to read * @gfp: page allocation flag @@ -1458,12 +1463,11 @@ EXPORT_SYMBOL(__breadahead); * It returns NULL if the block was unreadable. */ struct buffer_head * -__bread_gfp(struct block_device *bdev, sector_t block, - unsigned size, gfp_t gfp) +__bread_gfp(struct file *bdev_file, sector_t block, unsigned int size, gfp_t gfp) { struct buffer_head *bh; - gfp |= mapping_gfp_constraint(bdev->bd_inode->i_mapping, ~__GFP_FS); + gfp |= mapping_gfp_constraint(bdev_file->f_mapping, ~__GFP_FS); /* * Prefer looping in the allocator rather than here, at least that @@ -1471,7 +1475,7 @@ __bread_gfp(struct block_device *bdev, sector_t block, */ gfp |= __GFP_NOFAIL; - bh = bdev_getblk(bdev, block, size, gfp); + bh = bdev_getblk(bdev_file, block, size, gfp); if (likely(bh) && !buffer_uptodate(bh)) bh = __bread_slow(bh); @@ -1556,7 +1560,7 @@ EXPORT_SYMBOL(folio_set_bh); /* Bits that are cleared during an invalidate */ #define BUFFER_FLAGS_DISCARD \ (1 << BH_Mapped | 1 << BH_New | 1 << BH_Req | \ - 1 << BH_Delay | 1 << BH_Unwritten) + 1 << BH_Delay | 1 << BH_Unwritten | 1 << BH_Bdev) static void discard_buffer(struct buffer_head * bh) { @@ -1564,7 +1568,7 @@ static void discard_buffer(struct buffer_head * bh) lock_buffer(bh); clear_buffer_dirty(bh); - bh->b_bdev = NULL; + bh->b_bdev_file = NULL; b_state = READ_ONCE(bh->b_state); do { } while (!try_cmpxchg(&bh->b_state, &b_state, @@ -1675,8 +1679,8 @@ struct buffer_head *create_empty_buffers(struct folio *folio, EXPORT_SYMBOL(create_empty_buffers); /** - * clean_bdev_aliases: clean a range of buffers in block device - * @bdev: Block device to clean buffers in + * __clean_bdev_aliases: clean a range of buffers in block device + * @inode: Block device inode to clean buffers in * @block: Start of a range of blocks to clean * @len: Number of blocks to clean * @@ -1694,9 +1698,8 @@ EXPORT_SYMBOL(create_empty_buffers); * I/O in bforget() - it's more efficient to wait on the I/O only if we really * need to. That happens here. */ -void clean_bdev_aliases(struct block_device *bdev, sector_t block, sector_t len) +void __clean_bdev_aliases(struct inode *bd_inode, sector_t block, sector_t len) { - struct inode *bd_inode = bdev->bd_inode; struct address_space *bd_mapping = bd_inode->i_mapping; struct folio_batch fbatch; pgoff_t index = ((loff_t)block << bd_inode->i_blkbits) / PAGE_SIZE; @@ -1746,7 +1749,7 @@ void clean_bdev_aliases(struct block_device *bdev, sector_t block, sector_t len) break; } } -EXPORT_SYMBOL(clean_bdev_aliases); +EXPORT_SYMBOL(__clean_bdev_aliases); static struct buffer_head *folio_create_buffers(struct folio *folio, struct inode *inode, @@ -2003,7 +2006,17 @@ iomap_to_bh(struct inode *inode, sector_t block, struct buffer_head *bh, { loff_t offset = (loff_t)block << inode->i_blkbits; - bh->b_bdev = iomap->bdev; + if (iomap->flags & IOMAP_F_BDEV) { + /* + * If this request originated directly from the block layer we + * only have access to the plain block device. Mark the + * buffer_head similarly. + */ + bh->b_bdev = iomap->bdev; + set_buffer_bdev(bh); + } else { + bh->b_bdev_file = iomap->bdev_file; + } /* * Block points to offset in file we need to map, iomap contains @@ -2778,7 +2791,7 @@ static void submit_bh_wbc(blk_opf_t opf, struct buffer_head *bh, if (buffer_prio(bh)) opf |= REQ_PRIO; - bio = bio_alloc(bh->b_bdev, 1, opf, GFP_NOIO); + bio = bio_alloc(bh_bdev(bh), 1, opf, GFP_NOIO); fscrypt_set_bio_crypt_ctx_bh(bio, bh, GFP_NOIO); diff --git a/fs/direct-io.c b/fs/direct-io.c index 60456263a338..77691f2b2565 100644 --- a/fs/direct-io.c +++ b/fs/direct-io.c @@ -671,7 +671,7 @@ static inline int dio_new_bio(struct dio *dio, struct dio_submit *sdio, sector = start_sector << (sdio->blkbits - 9); nr_pages = bio_max_segs(sdio->pages_in_io); BUG_ON(nr_pages <= 0); - dio_bio_alloc(dio, sdio, map_bh->b_bdev, sector, nr_pages); + dio_bio_alloc(dio, sdio, bh_bdev(map_bh), sector, nr_pages); sdio->boundary = 0; out: return ret; @@ -946,7 +946,7 @@ static int do_direct_IO(struct dio *dio, struct dio_submit *sdio, map_bh->b_blocknr << sdio->blkfactor; if (buffer_new(map_bh)) { clean_bdev_aliases( - map_bh->b_bdev, + map_bh->b_bdev_file, map_bh->b_blocknr, map_bh->b_size >> i_blkbits); } diff --git a/fs/erofs/data.c b/fs/erofs/data.c index dc2d43abe8c5..6127ff1ba453 100644 --- a/fs/erofs/data.c +++ b/fs/erofs/data.c @@ -204,6 +204,7 @@ int erofs_map_dev(struct super_block *sb, struct erofs_map_dev *map) int id; map->m_bdev = sb->s_bdev; + map->m_bdev_file = sb->s_bdev_file; map->m_daxdev = EROFS_SB(sb)->dax_dev; map->m_dax_part_off = EROFS_SB(sb)->dax_part_off; map->m_fscache = EROFS_SB(sb)->s_fscache; @@ -278,7 +279,7 @@ static int erofs_iomap_begin(struct inode *inode, loff_t offset, loff_t length, if (flags & IOMAP_DAX) iomap->dax_dev = mdev.m_daxdev; else - iomap->bdev = mdev.m_bdev; + iomap->bdev_file = mdev.m_bdev_file; iomap->length = map.m_llen; iomap->flags = 0; iomap->private = NULL; diff --git a/fs/erofs/internal.h b/fs/erofs/internal.h index 0f0706325b7b..50f8a7f161fd 100644 --- a/fs/erofs/internal.h +++ b/fs/erofs/internal.h @@ -377,6 +377,7 @@ enum { struct erofs_map_dev { struct erofs_fscache *m_fscache; + struct file *m_bdev_file; struct block_device *m_bdev; struct dax_device *m_daxdev; u64 m_dax_part_off; diff --git a/fs/erofs/zmap.c b/fs/erofs/zmap.c index e313c936351d..6da3083e8252 100644 --- a/fs/erofs/zmap.c +++ b/fs/erofs/zmap.c @@ -739,7 +739,7 @@ static int z_erofs_iomap_begin_report(struct inode *inode, loff_t offset, if (ret < 0) return ret; - iomap->bdev = inode->i_sb->s_bdev; + iomap->bdev_file = inode->i_sb->s_bdev_file; iomap->offset = map.m_la; iomap->length = map.m_llen; if (map.m_flags & EROFS_MAP_MAPPED) { diff --git a/fs/ext2/inode.c b/fs/ext2/inode.c index f3d570a9302b..32555734e727 100644 --- a/fs/ext2/inode.c +++ b/fs/ext2/inode.c @@ -744,7 +744,7 @@ static int ext2_get_blocks(struct inode *inode, * We must unmap blocks before zeroing so that writeback cannot * overwrite zeros with stale data from block device page cache. */ - clean_bdev_aliases(inode->i_sb->s_bdev, + clean_bdev_aliases(inode->i_sb->s_bdev_file, le32_to_cpu(chain[depth-1].key), count); /* @@ -842,7 +842,7 @@ static int ext2_iomap_begin(struct inode *inode, loff_t offset, loff_t length, if (flags & IOMAP_DAX) iomap->dax_dev = sbi->s_daxdev; else - iomap->bdev = inode->i_sb->s_bdev; + iomap->bdev_file = inode->i_sb->s_bdev_file; if (ret == 0) { /* diff --git a/fs/ext2/xattr.c b/fs/ext2/xattr.c index c885dcc3bd0d..42e595e87a74 100644 --- a/fs/ext2/xattr.c +++ b/fs/ext2/xattr.c @@ -80,7 +80,7 @@ } while (0) # define ea_bdebug(bh, f...) do { \ printk(KERN_DEBUG "block %pg:%lu: ", \ - bh->b_bdev, (unsigned long) bh->b_blocknr); \ + bh_bdev(bh), (unsigned long) bh->b_blocknr); \ printk(f); \ printk("\n"); \ } while (0) diff --git a/fs/ext4/inode.c b/fs/ext4/inode.c index 2ccf3b5e3a7c..eb861ca94e63 100644 --- a/fs/ext4/inode.c +++ b/fs/ext4/inode.c @@ -1791,11 +1791,11 @@ static int ext4_da_map_blocks(struct inode *inode, sector_t iblock, * reserve space for a single block. * * For delayed buffer_head we have BH_Mapped, BH_New, BH_Delay set. - * We also have b_blocknr = -1 and b_bdev initialized properly + * We also have b_blocknr = -1 and b_bdev_file initialized properly * * For unwritten buffer_head we have BH_Mapped, BH_New, BH_Unwritten set. - * We also have b_blocknr = physicalblock mapping unwritten extent and b_bdev - * initialized properly. + * We also have b_blocknr = physicalblock mapping unwritten extent and + * b_bdev_file initialized properly. */ int ext4_da_get_block_prep(struct inode *inode, sector_t iblock, struct buffer_head *bh, int create) @@ -3235,7 +3235,7 @@ static void ext4_set_iomap(struct inode *inode, struct iomap *iomap, if (flags & IOMAP_DAX) iomap->dax_dev = EXT4_SB(inode->i_sb)->s_daxdev; else - iomap->bdev = inode->i_sb->s_bdev; + iomap->bdev_file = inode->i_sb->s_bdev_file; iomap->offset = (u64) map->m_lblk << blkbits; iomap->length = (u64) map->m_len << blkbits; diff --git a/fs/ext4/mmp.c b/fs/ext4/mmp.c index bd946d0c71b7..5641bd34d021 100644 --- a/fs/ext4/mmp.c +++ b/fs/ext4/mmp.c @@ -384,7 +384,7 @@ int ext4_multi_mount_protect(struct super_block *sb, BUILD_BUG_ON(sizeof(mmp->mmp_bdevname) < BDEVNAME_SIZE); snprintf(mmp->mmp_bdevname, sizeof(mmp->mmp_bdevname), - "%pg", bh->b_bdev); + "%pg", bh_bdev(bh)); /* * Start a kernel thread to update the MMP block periodically. diff --git a/fs/ext4/page-io.c b/fs/ext4/page-io.c index 312bc6813357..b0c3de39daa1 100644 --- a/fs/ext4/page-io.c +++ b/fs/ext4/page-io.c @@ -93,8 +93,7 @@ struct ext4_io_end_vec *ext4_last_io_end_vec(ext4_io_end_t *io_end) static void buffer_io_error(struct buffer_head *bh) { printk_ratelimited(KERN_ERR "Buffer I/O error on device %pg, logical block %llu\n", - bh->b_bdev, - (unsigned long long)bh->b_blocknr); + bh_bdev(bh), (unsigned long long)bh->b_blocknr); } static void ext4_finish_bio(struct bio *bio) @@ -397,7 +396,7 @@ static void io_submit_init_bio(struct ext4_io_submit *io, * bio_alloc will _always_ be able to allocate a bio if * __GFP_DIRECT_RECLAIM is set, see comments for bio_alloc_bioset(). */ - bio = bio_alloc(bh->b_bdev, BIO_MAX_VECS, REQ_OP_WRITE, GFP_NOIO); + bio = bio_alloc(bh_bdev(bh), BIO_MAX_VECS, REQ_OP_WRITE, GFP_NOIO); fscrypt_set_bio_crypt_ctx_bh(bio, bh, GFP_NOIO); bio->bi_iter.bi_sector = bh->b_blocknr * (bh->b_size >> 9); bio->bi_end_io = ext4_end_bio; diff --git a/fs/ext4/super.c b/fs/ext4/super.c index 4df1a5cfe0a5..d2ca92bf5f7e 100644 --- a/fs/ext4/super.c +++ b/fs/ext4/super.c @@ -261,7 +261,7 @@ struct buffer_head *ext4_sb_bread_unmovable(struct super_block *sb, void ext4_sb_breadahead_unmovable(struct super_block *sb, sector_t block) { - struct buffer_head *bh = bdev_getblk(sb->s_bdev, block, + struct buffer_head *bh = bdev_getblk(sb->s_bdev_file, block, sb->s_blocksize, GFP_NOWAIT | __GFP_NOWARN); if (likely(bh)) { @@ -5862,7 +5862,7 @@ static struct file *ext4_get_journal_blkdev(struct super_block *sb, sb_block = EXT4_MIN_BLOCK_SIZE / blocksize; offset = EXT4_MIN_BLOCK_SIZE % blocksize; set_blocksize(bdev, blocksize); - bh = __bread(bdev, sb_block, blocksize); + bh = __bread(bdev_file, sb_block, blocksize); if (!bh) { ext4_msg(sb, KERN_ERR, "couldn't read superblock of " "external journal"); diff --git a/fs/ext4/xattr.c b/fs/ext4/xattr.c index 82dc5e673d5c..41128ccec2ec 100644 --- a/fs/ext4/xattr.c +++ b/fs/ext4/xattr.c @@ -68,7 +68,7 @@ inode->i_sb->s_id, inode->i_ino, ##__VA_ARGS__) # define ea_bdebug(bh, fmt, ...) \ printk(KERN_DEBUG "block %pg:%lu: " fmt "\n", \ - bh->b_bdev, (unsigned long)bh->b_blocknr, ##__VA_ARGS__) + bh_bdev(bh), (unsigned long)bh->b_blocknr, ##__VA_ARGS__) #else # define ea_idebug(inode, fmt, ...) no_printk(fmt, ##__VA_ARGS__) # define ea_bdebug(bh, fmt, ...) no_printk(fmt, ##__VA_ARGS__) diff --git a/fs/f2fs/data.c b/fs/f2fs/data.c index 05158f89ef32..8ec12b3716bc 100644 --- a/fs/f2fs/data.c +++ b/fs/f2fs/data.c @@ -1606,6 +1606,7 @@ int f2fs_map_blocks(struct inode *inode, struct f2fs_map_blocks *map, int flag) goto out; map->m_bdev = inode->i_sb->s_bdev; + map->m_bdev_file = inode->i_sb->s_bdev_file; map->m_multidev_dio = f2fs_allow_multi_device_dio(F2FS_I_SB(inode), flag); @@ -1724,8 +1725,10 @@ int f2fs_map_blocks(struct inode *inode, struct f2fs_map_blocks *map, int flag) map->m_pblk = blkaddr; map->m_len = 1; - if (map->m_multidev_dio) + if (map->m_multidev_dio) { map->m_bdev = FDEV(bidx).bdev; + map->m_bdev_file = FDEV(bidx).bdev_file; + } } else if ((map->m_pblk != NEW_ADDR && blkaddr == (map->m_pblk + ofs)) || (map->m_pblk == NEW_ADDR && blkaddr == NEW_ADDR) || @@ -4250,7 +4253,7 @@ static int f2fs_iomap_begin(struct inode *inode, loff_t offset, loff_t length, iomap->length = blks_to_bytes(inode, map.m_len); iomap->type = IOMAP_MAPPED; iomap->flags |= IOMAP_F_MERGED; - iomap->bdev = map.m_bdev; + iomap->bdev_file = map.m_bdev_file; iomap->addr = blks_to_bytes(inode, map.m_pblk); } else { if (flags & IOMAP_WRITE) diff --git a/fs/f2fs/f2fs.h b/fs/f2fs/f2fs.h index cc481d7b9287..ed36c11325cd 100644 --- a/fs/f2fs/f2fs.h +++ b/fs/f2fs/f2fs.h @@ -697,6 +697,7 @@ struct extent_tree_info { F2FS_MAP_DELALLOC) struct f2fs_map_blocks { + struct file *m_bdev_file; /* for multi-device dio */ struct block_device *m_bdev; /* for multi-device dio */ block_t m_pblk; block_t m_lblk; diff --git a/fs/fuse/dax.c b/fs/fuse/dax.c index 12ef91d170bb..24966e93a237 100644 --- a/fs/fuse/dax.c +++ b/fs/fuse/dax.c @@ -575,7 +575,7 @@ static int fuse_iomap_begin(struct inode *inode, loff_t pos, loff_t length, iomap->offset = pos; iomap->flags = 0; - iomap->bdev = NULL; + iomap->bdev_file = NULL; iomap->dax_dev = fc->dax->dev; /* diff --git a/fs/gfs2/aops.c b/fs/gfs2/aops.c index 974aca9c8ea8..0e4e295ebf49 100644 --- a/fs/gfs2/aops.c +++ b/fs/gfs2/aops.c @@ -622,7 +622,7 @@ static void gfs2_discard(struct gfs2_sbd *sdp, struct buffer_head *bh) spin_unlock(&sdp->sd_ail_lock); } } - bh->b_bdev = NULL; + bh->b_bdev_file = NULL; clear_buffer_mapped(bh); clear_buffer_req(bh); clear_buffer_new(bh); diff --git a/fs/gfs2/bmap.c b/fs/gfs2/bmap.c index 789af5c8fade..ef4e7ad83d4c 100644 --- a/fs/gfs2/bmap.c +++ b/fs/gfs2/bmap.c @@ -926,7 +926,7 @@ static int __gfs2_iomap_get(struct inode *inode, loff_t pos, loff_t length, iomap->flags |= IOMAP_F_GFS2_BOUNDARY; out: - iomap->bdev = inode->i_sb->s_bdev; + iomap->bdev_file = inode->i_sb->s_bdev_file; unlock: up_read(&ip->i_rw_mutex); return ret; diff --git a/fs/gfs2/meta_io.c b/fs/gfs2/meta_io.c index f814054c8cd0..2052d3fc2c24 100644 --- a/fs/gfs2/meta_io.c +++ b/fs/gfs2/meta_io.c @@ -218,7 +218,7 @@ static void gfs2_submit_bhs(blk_opf_t opf, struct buffer_head *bhs[], int num) struct buffer_head *bh = *bhs; struct bio *bio; - bio = bio_alloc(bh->b_bdev, num, opf, GFP_NOIO); + bio = bio_alloc(bh_bdev(bh), num, opf, GFP_NOIO); bio->bi_iter.bi_sector = bh->b_blocknr * (bh->b_size >> 9); while (num > 0) { bh = *bhs; diff --git a/fs/hpfs/file.c b/fs/hpfs/file.c index 1bb8d97cd9ae..7353d0e2f35a 100644 --- a/fs/hpfs/file.c +++ b/fs/hpfs/file.c @@ -128,7 +128,7 @@ static int hpfs_iomap_begin(struct inode *inode, loff_t offset, loff_t length, if (WARN_ON_ONCE(flags & (IOMAP_WRITE | IOMAP_ZERO))) return -EINVAL; - iomap->bdev = inode->i_sb->s_bdev; + iomap->bdev_file = inode->i_sb->s_bdev_file; iomap->offset = offset; hpfs_lock(sb); diff --git a/fs/iomap/buffered-io.c b/fs/iomap/buffered-io.c index 2ad0e287c704..2fc8abd693da 100644 --- a/fs/iomap/buffered-io.c +++ b/fs/iomap/buffered-io.c @@ -415,7 +415,7 @@ static loff_t iomap_readpage_iter(const struct iomap_iter *iter, if (ctx->rac) /* same as readahead_gfp_mask */ gfp |= __GFP_NORETRY | __GFP_NOWARN; - ctx->bio = bio_alloc(iomap->bdev, bio_max_segs(nr_vecs), + ctx->bio = bio_alloc(iomap_bdev(iomap), bio_max_segs(nr_vecs), REQ_OP_READ, gfp); /* * If the bio_alloc fails, try it again for a single page to @@ -423,7 +423,7 @@ static loff_t iomap_readpage_iter(const struct iomap_iter *iter, * what do_mpage_read_folio does. */ if (!ctx->bio) { - ctx->bio = bio_alloc(iomap->bdev, 1, REQ_OP_READ, + ctx->bio = bio_alloc(iomap_bdev(iomap), 1, REQ_OP_READ, orig_gfp); } if (ctx->rac) @@ -662,7 +662,7 @@ static int iomap_read_folio_sync(loff_t block_start, struct folio *folio, struct bio_vec bvec; struct bio bio; - bio_init(&bio, iomap->bdev, &bvec, 1, REQ_OP_READ); + bio_init(&bio, iomap_bdev(iomap), &bvec, 1, REQ_OP_READ); bio.bi_iter.bi_sector = iomap_sector(iomap, block_start); bio_add_folio_nofail(&bio, folio, plen, poff); return submit_bio_wait(&bio); @@ -1684,7 +1684,7 @@ static struct iomap_ioend *iomap_alloc_ioend(struct iomap_writepage_ctx *wpc, struct iomap_ioend *ioend; struct bio *bio; - bio = bio_alloc_bioset(wpc->iomap.bdev, BIO_MAX_VECS, + bio = bio_alloc_bioset(iomap_bdev(&wpc->iomap), BIO_MAX_VECS, REQ_OP_WRITE | wbc_to_write_flags(wbc), GFP_NOFS, &iomap_ioend_bioset); bio->bi_iter.bi_sector = iomap_sector(&wpc->iomap, pos); diff --git a/fs/iomap/direct-io.c b/fs/iomap/direct-io.c index bcd3f8cf5ea4..42518754c65d 100644 --- a/fs/iomap/direct-io.c +++ b/fs/iomap/direct-io.c @@ -56,9 +56,9 @@ static struct bio *iomap_dio_alloc_bio(const struct iomap_iter *iter, struct iomap_dio *dio, unsigned short nr_vecs, blk_opf_t opf) { if (dio->dops && dio->dops->bio_set) - return bio_alloc_bioset(iter->iomap.bdev, nr_vecs, opf, + return bio_alloc_bioset(iomap_bdev(&iter->iomap), nr_vecs, opf, GFP_KERNEL, dio->dops->bio_set); - return bio_alloc(iter->iomap.bdev, nr_vecs, opf, GFP_KERNEL); + return bio_alloc(iomap_bdev(&iter->iomap), nr_vecs, opf, GFP_KERNEL); } static void iomap_dio_submit_bio(const struct iomap_iter *iter, @@ -288,8 +288,8 @@ static loff_t iomap_dio_bio_iter(const struct iomap_iter *iter, size_t copied = 0; size_t orig_count; - if ((pos | length) & (bdev_logical_block_size(iomap->bdev) - 1) || - !bdev_iter_is_aligned(iomap->bdev, dio->submit.iter)) + if ((pos | length) & (bdev_logical_block_size(iomap_bdev(iomap)) - 1) || + !bdev_iter_is_aligned(iomap_bdev(iomap), dio->submit.iter)) return -EINVAL; if (iomap->type == IOMAP_UNWRITTEN) { @@ -316,7 +316,8 @@ static loff_t iomap_dio_bio_iter(const struct iomap_iter *iter, */ if (!(iomap->flags & (IOMAP_F_SHARED|IOMAP_F_DIRTY)) && (dio->flags & IOMAP_DIO_WRITE_THROUGH) && - (bdev_fua(iomap->bdev) || !bdev_write_cache(iomap->bdev))) + (bdev_fua(iomap_bdev(iomap)) || + !bdev_write_cache(iomap_bdev(iomap)))) use_fua = true; else if (dio->flags & IOMAP_DIO_NEED_SYNC) dio->flags &= ~IOMAP_DIO_CALLER_COMP; diff --git a/fs/iomap/swapfile.c b/fs/iomap/swapfile.c index 5fc0ac36dee3..20bd67e85d15 100644 --- a/fs/iomap/swapfile.c +++ b/fs/iomap/swapfile.c @@ -116,7 +116,7 @@ static loff_t iomap_swapfile_iter(const struct iomap_iter *iter, return iomap_swapfile_fail(isi, "has shared extents"); /* Only one bdev per swap file. */ - if (iomap->bdev != isi->sis->bdev) + if (iomap_bdev(iomap) != isi->sis->bdev) return iomap_swapfile_fail(isi, "outside the main device"); if (isi->iomap.length == 0) { diff --git a/fs/iomap/trace.h b/fs/iomap/trace.h index c16fd55f5595..43fb3ce21674 100644 --- a/fs/iomap/trace.h +++ b/fs/iomap/trace.h @@ -134,7 +134,7 @@ DECLARE_EVENT_CLASS(iomap_class, __entry->length = iomap->length; __entry->type = iomap->type; __entry->flags = iomap->flags; - __entry->bdev = iomap->bdev ? iomap->bdev->bd_dev : 0; + __entry->bdev = iomap_bdev(iomap) ? iomap_bdev(iomap)->bd_dev : 0; ), TP_printk("dev %d:%d ino 0x%llx bdev %d:%d addr 0x%llx offset 0x%llx " "length 0x%llx type %s flags %s", diff --git a/fs/jbd2/commit.c b/fs/jbd2/commit.c index 5e122586e06e..fffb1b4e2068 100644 --- a/fs/jbd2/commit.c +++ b/fs/jbd2/commit.c @@ -1014,7 +1014,7 @@ void jbd2_journal_commit_transaction(journal_t *journal) clear_buffer_mapped(bh); clear_buffer_new(bh); clear_buffer_req(bh); - bh->b_bdev = NULL; + bh->b_bdev_file = NULL; } } diff --git a/fs/jbd2/journal.c b/fs/jbd2/journal.c index abd42a6ccd0e..bbe5d02801b6 100644 --- a/fs/jbd2/journal.c +++ b/fs/jbd2/journal.c @@ -434,7 +434,7 @@ int jbd2_journal_write_metadata_buffer(transaction_t *transaction, folio_set_bh(new_bh, new_folio, new_offset); new_bh->b_size = bh_in->b_size; - new_bh->b_bdev = journal->j_dev; + new_bh->b_bdev_file = journal->j_dev_file; new_bh->b_blocknr = blocknr; new_bh->b_private = bh_in; set_buffer_mapped(new_bh); @@ -880,7 +880,7 @@ int jbd2_fc_get_buf(journal_t *journal, struct buffer_head **bh_out) if (ret) return ret; - bh = __getblk(journal->j_dev, pblock, journal->j_blocksize); + bh = __getblk(journal->j_dev_file, pblock, journal->j_blocksize); if (!bh) return -ENOMEM; @@ -1007,7 +1007,7 @@ jbd2_journal_get_descriptor_buffer(transaction_t *transaction, int type) if (err) return NULL; - bh = __getblk(journal->j_dev, blocknr, journal->j_blocksize); + bh = __getblk(journal->j_dev_file, blocknr, journal->j_blocksize); if (!bh) return NULL; atomic_dec(&transaction->t_outstanding_credits); @@ -1461,7 +1461,7 @@ static int journal_load_superblock(journal_t *journal) struct buffer_head *bh; journal_superblock_t *sb; - bh = getblk_unmovable(journal->j_dev, journal->j_blk_offset, + bh = getblk_unmovable(journal->j_dev_file, journal->j_blk_offset, journal->j_blocksize); if (bh) err = bh_read(bh, 0); diff --git a/fs/jbd2/recovery.c b/fs/jbd2/recovery.c index 1f7664984d6e..7b561e2c6a7c 100644 --- a/fs/jbd2/recovery.c +++ b/fs/jbd2/recovery.c @@ -92,7 +92,7 @@ static int do_readahead(journal_t *journal, unsigned int start) goto failed; } - bh = __getblk(journal->j_dev, blocknr, journal->j_blocksize); + bh = __getblk(journal->j_dev_file, blocknr, journal->j_blocksize); if (!bh) { err = -ENOMEM; goto failed; @@ -148,7 +148,7 @@ static int jread(struct buffer_head **bhp, journal_t *journal, return err; } - bh = __getblk(journal->j_dev, blocknr, journal->j_blocksize); + bh = __getblk(journal->j_dev_file, blocknr, journal->j_blocksize); if (!bh) return -ENOMEM; @@ -370,7 +370,7 @@ int jbd2_journal_skip_recovery(journal_t *journal) journal->j_head = journal->j_first; } else { #ifdef CONFIG_JBD2_DEBUG - int dropped = info.end_transaction - + int dropped = info.end_transaction - be32_to_cpu(journal->j_superblock->s_sequence); jbd2_debug(1, "JBD2: ignoring %d transaction%s from the journal.\n", @@ -672,7 +672,7 @@ static int do_one_pass(journal_t *journal, /* Find a buffer for the new * data being restored */ - nbh = __getblk(journal->j_fs_dev, + nbh = __getblk(journal->j_fs_dev_file, blocknr, journal->j_blocksize); if (nbh == NULL) { diff --git a/fs/jbd2/revoke.c b/fs/jbd2/revoke.c index 4556e4689024..99c2758539a8 100644 --- a/fs/jbd2/revoke.c +++ b/fs/jbd2/revoke.c @@ -328,7 +328,7 @@ int jbd2_journal_revoke(handle_t *handle, unsigned long long blocknr, { struct buffer_head *bh = NULL; journal_t *journal; - struct block_device *bdev; + struct file *file; int err; might_sleep(); @@ -341,11 +341,11 @@ int jbd2_journal_revoke(handle_t *handle, unsigned long long blocknr, return -EINVAL; } - bdev = journal->j_fs_dev; + file = journal->j_fs_dev_file; bh = bh_in; if (!bh) { - bh = __find_get_block(bdev, blocknr, journal->j_blocksize); + bh = __find_get_block(file, blocknr, journal->j_blocksize); if (bh) BUFFER_TRACE(bh, "found on hash"); } @@ -355,7 +355,7 @@ int jbd2_journal_revoke(handle_t *handle, unsigned long long blocknr, /* If there is a different buffer_head lying around in * memory anywhere... */ - bh2 = __find_get_block(bdev, blocknr, journal->j_blocksize); + bh2 = __find_get_block(file, blocknr, journal->j_blocksize); if (bh2) { /* ... and it has RevokeValid status... */ if (bh2 != bh && buffer_revokevalid(bh2)) @@ -466,7 +466,8 @@ int jbd2_journal_cancel_revoke(handle_t *handle, struct journal_head *jh) * state machine will get very upset later on. */ if (need_cancel) { struct buffer_head *bh2; - bh2 = __find_get_block(bh->b_bdev, bh->b_blocknr, bh->b_size); + bh2 = __find_get_block(bh->b_bdev_file, bh->b_blocknr, + bh->b_size); if (bh2) { if (bh2 != bh) clear_buffer_revoked(bh2); @@ -495,7 +496,7 @@ void jbd2_clear_buffer_revoked_flags(journal_t *journal) struct jbd2_revoke_record_s *record; struct buffer_head *bh; record = (struct jbd2_revoke_record_s *)list_entry; - bh = __find_get_block(journal->j_fs_dev, + bh = __find_get_block(journal->j_fs_dev_file, record->blocknr, journal->j_blocksize); if (bh) { diff --git a/fs/jbd2/transaction.c b/fs/jbd2/transaction.c index cb0b8d6fc0c6..30ebc93dc430 100644 --- a/fs/jbd2/transaction.c +++ b/fs/jbd2/transaction.c @@ -929,7 +929,7 @@ static void warn_dirty_buffer(struct buffer_head *bh) "JBD2: Spotted dirty metadata buffer (dev = %pg, blocknr = %llu). " "There's a risk of filesystem corruption in case of system " "crash.\n", - bh->b_bdev, (unsigned long long)bh->b_blocknr); + bh_bdev(bh), (unsigned long long)bh->b_blocknr); } /* Call t_frozen trigger and copy buffer data into jh->b_frozen_data. */ @@ -990,7 +990,7 @@ do_get_write_access(handle_t *handle, struct journal_head *jh, /* If it takes too long to lock the buffer, trace it */ time_lock = jbd2_time_diff(start_lock, jiffies); if (time_lock > HZ/10) - trace_jbd2_lock_buffer_stall(bh->b_bdev->bd_dev, + trace_jbd2_lock_buffer_stall(bh_bdev(bh)->bd_dev, jiffies_to_msecs(time_lock)); /* We now hold the buffer lock so it is safe to query the buffer @@ -2374,7 +2374,7 @@ static int journal_unmap_buffer(journal_t *journal, struct buffer_head *bh, write_unlock(&journal->j_state_lock); jbd2_journal_put_journal_head(jh); /* Already zapped buffer? Nothing to do... */ - if (!bh->b_bdev) + if (!bh_bdev(bh)) return 0; return -EBUSY; } @@ -2428,7 +2428,7 @@ static int journal_unmap_buffer(journal_t *journal, struct buffer_head *bh, clear_buffer_new(bh); clear_buffer_delay(bh); clear_buffer_unwritten(bh); - bh->b_bdev = NULL; + bh->b_bdev_file = NULL; return may_free; } diff --git a/fs/mpage.c b/fs/mpage.c index 738882e0766d..ef6e72eec312 100644 --- a/fs/mpage.c +++ b/fs/mpage.c @@ -126,7 +126,12 @@ static void map_buffer_to_folio(struct folio *folio, struct buffer_head *bh, do { if (block == page_block) { page_bh->b_state = bh->b_state; - page_bh->b_bdev = bh->b_bdev; + if (buffer_bdev(bh)) { + page_bh->b_bdev = bh->b_bdev; + set_buffer_bdev(page_bh); + } else { + page_bh->b_bdev_file = bh->b_bdev_file; + } page_bh->b_blocknr = bh->b_blocknr; break; } @@ -216,7 +221,7 @@ static struct bio *do_mpage_readpage(struct mpage_readpage_args *args) page_block++; block_in_file++; } - bdev = map_bh->b_bdev; + bdev = bh_bdev(map_bh); } /* @@ -272,7 +277,7 @@ static struct bio *do_mpage_readpage(struct mpage_readpage_args *args) page_block++; block_in_file++; } - bdev = map_bh->b_bdev; + bdev = bh_bdev(map_bh); } if (first_hole != blocks_per_page) { @@ -472,7 +477,7 @@ static int __mpage_writepage(struct folio *folio, struct writeback_control *wbc, struct block_device *bdev = NULL; int boundary = 0; sector_t boundary_block = 0; - struct block_device *boundary_bdev = NULL; + struct file *boundary_bdev_file = NULL; size_t length; struct buffer_head map_bh; loff_t i_size = i_size_read(inode); @@ -513,9 +518,9 @@ static int __mpage_writepage(struct folio *folio, struct writeback_control *wbc, boundary = buffer_boundary(bh); if (boundary) { boundary_block = bh->b_blocknr; - boundary_bdev = bh->b_bdev; + boundary_bdev_file = bh->b_bdev_file; } - bdev = bh->b_bdev; + bdev = bh_bdev(bh); } while ((bh = bh->b_this_page) != head); if (first_unmapped) @@ -549,13 +554,16 @@ static int __mpage_writepage(struct folio *folio, struct writeback_control *wbc, map_bh.b_size = 1 << blkbits; if (mpd->get_block(inode, block_in_file, &map_bh, 1)) goto confused; + /* This helper cannot be used from the block layer directly. */ + if (WARN_ON_ONCE(buffer_bdev(&map_bh))) + goto confused; if (!buffer_mapped(&map_bh)) goto confused; if (buffer_new(&map_bh)) clean_bdev_bh_alias(&map_bh); if (buffer_boundary(&map_bh)) { boundary_block = map_bh.b_blocknr; - boundary_bdev = map_bh.b_bdev; + boundary_bdev_file = map_bh.b_bdev_file; } if (page_block) { if (map_bh.b_blocknr != first_block + page_block) @@ -565,7 +573,7 @@ static int __mpage_writepage(struct folio *folio, struct writeback_control *wbc, } page_block++; boundary = buffer_boundary(&map_bh); - bdev = map_bh.b_bdev; + bdev = bh_bdev(&map_bh); if (block_in_file == last_block) break; block_in_file++; @@ -627,7 +635,7 @@ static int __mpage_writepage(struct folio *folio, struct writeback_control *wbc, if (boundary || (first_unmapped != blocks_per_page)) { bio = mpage_bio_submit_write(bio); if (boundary_block) { - write_boundary_block(boundary_bdev, + write_boundary_block(boundary_bdev_file, boundary_block, 1 << blkbits); } } else { diff --git a/fs/nilfs2/btnode.c b/fs/nilfs2/btnode.c index 0131d83b912d..0620bccbf6e0 100644 --- a/fs/nilfs2/btnode.c +++ b/fs/nilfs2/btnode.c @@ -59,7 +59,7 @@ nilfs_btnode_create_block(struct address_space *btnc, __u64 blocknr) BUG(); } memset(bh->b_data, 0, i_blocksize(inode)); - bh->b_bdev = inode->i_sb->s_bdev; + bh->b_bdev_file = inode->i_sb->s_bdev_file; bh->b_blocknr = blocknr; set_buffer_mapped(bh); set_buffer_uptodate(bh); @@ -118,7 +118,7 @@ int nilfs_btnode_submit_block(struct address_space *btnc, __u64 blocknr, goto found; } set_buffer_mapped(bh); - bh->b_bdev = inode->i_sb->s_bdev; + bh->b_bdev_file = inode->i_sb->s_bdev_file; bh->b_blocknr = pblocknr; /* set block address for read */ bh->b_end_io = end_buffer_read_sync; get_bh(bh); diff --git a/fs/nilfs2/gcinode.c b/fs/nilfs2/gcinode.c index bf9a11d58817..77d4b9275b87 100644 --- a/fs/nilfs2/gcinode.c +++ b/fs/nilfs2/gcinode.c @@ -84,7 +84,7 @@ int nilfs_gccache_submit_read_data(struct inode *inode, sector_t blkoff, } if (!buffer_mapped(bh)) { - bh->b_bdev = inode->i_sb->s_bdev; + bh->b_bdev_file = inode->i_sb->s_bdev_file; set_buffer_mapped(bh); } bh->b_blocknr = pbn; diff --git a/fs/nilfs2/mdt.c b/fs/nilfs2/mdt.c index 4f792a0ad0f0..99cf302ce116 100644 --- a/fs/nilfs2/mdt.c +++ b/fs/nilfs2/mdt.c @@ -89,7 +89,7 @@ static int nilfs_mdt_create_block(struct inode *inode, unsigned long block, if (buffer_uptodate(bh)) goto failed_bh; - bh->b_bdev = sb->s_bdev; + bh->b_bdev_file = sb->s_bdev_file; err = nilfs_mdt_insert_new_block(inode, block, bh, init_block); if (likely(!err)) { get_bh(bh); diff --git a/fs/nilfs2/page.c b/fs/nilfs2/page.c index 14e470fb8870..f893d7e2e472 100644 --- a/fs/nilfs2/page.c +++ b/fs/nilfs2/page.c @@ -111,7 +111,7 @@ void nilfs_copy_buffer(struct buffer_head *dbh, struct buffer_head *sbh) dbh->b_state = sbh->b_state & NILFS_BUFFER_INHERENT_BITS; dbh->b_blocknr = sbh->b_blocknr; - dbh->b_bdev = sbh->b_bdev; + dbh->b_bdev_file = sbh->b_bdev_file; bh = dbh; bits = sbh->b_state & (BIT(BH_Uptodate) | BIT(BH_Mapped)); @@ -216,7 +216,7 @@ static void nilfs_copy_folio(struct folio *dst, struct folio *src, lock_buffer(dbh); dbh->b_state = sbh->b_state & mask; dbh->b_blocknr = sbh->b_blocknr; - dbh->b_bdev = sbh->b_bdev; + dbh->b_bdev_file = sbh->b_bdev_file; sbh = sbh->b_this_page; dbh = dbh->b_this_page; } while (dbh != dbufs); diff --git a/fs/nilfs2/recovery.c b/fs/nilfs2/recovery.c index a9b8d77c8c1d..e2f5dcc923c7 100644 --- a/fs/nilfs2/recovery.c +++ b/fs/nilfs2/recovery.c @@ -107,7 +107,8 @@ static int nilfs_compute_checksum(struct the_nilfs *nilfs, do { struct buffer_head *bh; - bh = __bread(nilfs->ns_bdev, ++start, blocksize); + bh = __bread(nilfs->ns_sb->s_bdev_file, ++start, + blocksize); if (!bh) return -EIO; check_bytes -= size; @@ -136,7 +137,8 @@ int nilfs_read_super_root_block(struct the_nilfs *nilfs, sector_t sr_block, int ret; *pbh = NULL; - bh_sr = __bread(nilfs->ns_bdev, sr_block, nilfs->ns_blocksize); + bh_sr = __bread(nilfs->ns_sb->s_bdev_file, sr_block, + nilfs->ns_blocksize); if (unlikely(!bh_sr)) { ret = NILFS_SEG_FAIL_IO; goto failed; @@ -183,7 +185,8 @@ nilfs_read_log_header(struct the_nilfs *nilfs, sector_t start_blocknr, { struct buffer_head *bh_sum; - bh_sum = __bread(nilfs->ns_bdev, start_blocknr, nilfs->ns_blocksize); + bh_sum = __bread(nilfs->ns_sb->s_bdev_file, start_blocknr, + nilfs->ns_blocksize); if (bh_sum) *sum = (struct nilfs_segment_summary *)bh_sum->b_data; return bh_sum; @@ -250,7 +253,7 @@ static void *nilfs_read_summary_info(struct the_nilfs *nilfs, if (bytes > (*pbh)->b_size - *offset) { blocknr = (*pbh)->b_blocknr; brelse(*pbh); - *pbh = __bread(nilfs->ns_bdev, blocknr + 1, + *pbh = __bread(nilfs->ns_sb->s_bdev_file, blocknr + 1, nilfs->ns_blocksize); if (unlikely(!*pbh)) return NULL; @@ -289,7 +292,7 @@ static void nilfs_skip_summary_info(struct the_nilfs *nilfs, *offset = bytes * (count - (bcnt - 1) * nitem_per_block); brelse(*pbh); - *pbh = __bread(nilfs->ns_bdev, blocknr + bcnt, + *pbh = __bread(nilfs->ns_sb->s_bdev_file, blocknr + bcnt, nilfs->ns_blocksize); } } @@ -318,7 +321,8 @@ static int nilfs_scan_dsync_log(struct the_nilfs *nilfs, sector_t start_blocknr, sumbytes = le32_to_cpu(sum->ss_sumbytes); blocknr = start_blocknr + DIV_ROUND_UP(sumbytes, nilfs->ns_blocksize); - bh = __bread(nilfs->ns_bdev, start_blocknr, nilfs->ns_blocksize); + bh = __bread(nilfs->ns_sb->s_bdev_file, start_blocknr, + nilfs->ns_blocksize); if (unlikely(!bh)) goto out; @@ -478,7 +482,8 @@ static int nilfs_recovery_copy_block(struct the_nilfs *nilfs, size_t from = pos & ~PAGE_MASK; void *kaddr; - bh_org = __bread(nilfs->ns_bdev, rb->blocknr, nilfs->ns_blocksize); + bh_org = __bread(nilfs->ns_sb->s_bdev_file, rb->blocknr, + nilfs->ns_blocksize); if (unlikely(!bh_org)) return -EIO; @@ -697,7 +702,8 @@ static void nilfs_finish_roll_forward(struct the_nilfs *nilfs, nilfs_get_segnum_of_block(nilfs, ri->ri_super_root)) return; - bh = __getblk(nilfs->ns_bdev, ri->ri_lsegs_start, nilfs->ns_blocksize); + bh = __getblk(nilfs->ns_sb->s_bdev_file, ri->ri_lsegs_start, + nilfs->ns_blocksize); BUG_ON(!bh); memset(bh->b_data, 0, bh->b_size); set_buffer_dirty(bh); @@ -823,7 +829,8 @@ int nilfs_search_super_root(struct the_nilfs *nilfs, /* Read ahead segment */ b = seg_start; while (b <= seg_end) - __breadahead(nilfs->ns_bdev, b++, nilfs->ns_blocksize); + __breadahead(nilfs->ns_sb->s_bdev_file, b++, + nilfs->ns_blocksize); for (;;) { brelse(bh_sum); @@ -869,7 +876,7 @@ int nilfs_search_super_root(struct the_nilfs *nilfs, if (pseg_start == seg_start) { nilfs_get_segment_range(nilfs, nextnum, &b, &end); while (b <= end) - __breadahead(nilfs->ns_bdev, b++, + __breadahead(nilfs->ns_sb->s_bdev_file, b++, nilfs->ns_blocksize); } if (!(flags & NILFS_SS_SR)) { diff --git a/fs/ntfs3/fsntfs.c b/fs/ntfs3/fsntfs.c index ae2ef5c11868..def075a25b2c 100644 --- a/fs/ntfs3/fsntfs.c +++ b/fs/ntfs3/fsntfs.c @@ -1033,14 +1033,13 @@ struct buffer_head *ntfs_bread(struct super_block *sb, sector_t block) int ntfs_sb_read(struct super_block *sb, u64 lbo, size_t bytes, void *buffer) { - struct block_device *bdev = sb->s_bdev; u32 blocksize = sb->s_blocksize; u64 block = lbo >> sb->s_blocksize_bits; u32 off = lbo & (blocksize - 1); u32 op = blocksize - off; for (; bytes; block += 1, off = 0, op = blocksize) { - struct buffer_head *bh = __bread(bdev, block, blocksize); + struct buffer_head *bh = __bread(sb->s_bdev_file, block, blocksize); if (!bh) return -EIO; @@ -1063,7 +1062,6 @@ int ntfs_sb_write(struct super_block *sb, u64 lbo, size_t bytes, const void *buf, int wait) { u32 blocksize = sb->s_blocksize; - struct block_device *bdev = sb->s_bdev; sector_t block = lbo >> sb->s_blocksize_bits; u32 off = lbo & (blocksize - 1); u32 op = blocksize - off; @@ -1077,14 +1075,14 @@ int ntfs_sb_write(struct super_block *sb, u64 lbo, size_t bytes, op = bytes; if (op < blocksize) { - bh = __bread(bdev, block, blocksize); + bh = __bread(sb->s_bdev_file, block, blocksize); if (!bh) { ntfs_err(sb, "failed to read block %llx", (u64)block); return -EIO; } } else { - bh = __getblk(bdev, block, blocksize); + bh = __getblk(sb->s_bdev_file, block, blocksize); if (!bh) return -ENOMEM; } diff --git a/fs/ntfs3/inode.c b/fs/ntfs3/inode.c index 3c4c878f6d77..a97eedc5130f 100644 --- a/fs/ntfs3/inode.c +++ b/fs/ntfs3/inode.c @@ -609,7 +609,7 @@ static noinline int ntfs_get_block_vbo(struct inode *inode, u64 vbo, lbo = ((u64)lcn << cluster_bits) + off; set_buffer_mapped(bh); - bh->b_bdev = sb->s_bdev; + bh->b_bdev_file = sb->s_bdev_file; bh->b_blocknr = lbo >> sb->s_blocksize_bits; valid = ni->i_valid; diff --git a/fs/ntfs3/super.c b/fs/ntfs3/super.c index cef5467fd928..aa7c6a8b04de 100644 --- a/fs/ntfs3/super.c +++ b/fs/ntfs3/super.c @@ -1642,7 +1642,7 @@ void ntfs_unmap_meta(struct super_block *sb, CLST lcn, CLST len) limit >>= 1; while (blocks--) { - clean_bdev_aliases(bdev, devblock++, 1); + clean_bdev_aliases(sb->s_bdev_file, devblock++, 1); if (cnt++ >= limit) { sync_blockdev(bdev); cnt = 0; diff --git a/fs/ocfs2/journal.c b/fs/ocfs2/journal.c index 604fea3a26ff..4ad64997f3c7 100644 --- a/fs/ocfs2/journal.c +++ b/fs/ocfs2/journal.c @@ -1209,7 +1209,7 @@ static int ocfs2_force_read_journal(struct inode *inode) } for (i = 0; i < p_blocks; i++, p_blkno++) { - bh = __find_get_block(osb->sb->s_bdev, p_blkno, + bh = __find_get_block(osb->sb->s_bdev_file, p_blkno, osb->sb->s_blocksize); /* block not cached. */ if (!bh) diff --git a/fs/reiserfs/fix_node.c b/fs/reiserfs/fix_node.c index 6c13a8d9a73c..2b288b1539d9 100644 --- a/fs/reiserfs/fix_node.c +++ b/fs/reiserfs/fix_node.c @@ -2332,7 +2332,7 @@ static void tb_buffer_sanity_check(struct super_block *sb, "in tree %s[%d] (%b)", descr, level, bh); - if (bh->b_bdev != sb->s_bdev) + if (bh_bdev(bh) != sb->s_bdev) reiserfs_panic(sb, "jmacd-4", "buffer has wrong " "device %s[%d] (%b)", descr, level, bh); diff --git a/fs/reiserfs/journal.c b/fs/reiserfs/journal.c index 6474529c4253..4d07d2f26317 100644 --- a/fs/reiserfs/journal.c +++ b/fs/reiserfs/journal.c @@ -618,7 +618,7 @@ static void reiserfs_end_buffer_io_sync(struct buffer_head *bh, int uptodate) if (buffer_journaled(bh)) { reiserfs_warning(NULL, "clm-2084", "pinned buffer %lu:%pg sent to disk", - bh->b_blocknr, bh->b_bdev); + bh->b_blocknr, bh_bdev(bh)); } if (uptodate) set_buffer_uptodate(bh); @@ -2315,7 +2315,7 @@ static int journal_read_transaction(struct super_block *sb, * from other places. * Note: Do not use journal_getblk/sb_getblk functions here! */ -static struct buffer_head *reiserfs_breada(struct block_device *dev, +static struct buffer_head *reiserfs_breada(struct file *bdev_file, b_blocknr_t block, int bufsize, b_blocknr_t max_block) { @@ -2324,7 +2324,7 @@ static struct buffer_head *reiserfs_breada(struct block_device *dev, struct buffer_head *bh; int i, j; - bh = __getblk(dev, block, bufsize); + bh = __getblk(bdev_file, block, bufsize); if (!bh || buffer_uptodate(bh)) return (bh); @@ -2334,7 +2334,7 @@ static struct buffer_head *reiserfs_breada(struct block_device *dev, bhlist[0] = bh; j = 1; for (i = 1; i < blocks; i++) { - bh = __getblk(dev, block + i, bufsize); + bh = __getblk(bdev_file, block + i, bufsize); if (!bh) break; if (buffer_uptodate(bh)) { @@ -2447,7 +2447,7 @@ static int journal_read(struct super_block *sb) * device and journal device to be the same */ d_bh = - reiserfs_breada(file_bdev(journal->j_bdev_file), cur_dblock, + reiserfs_breada(journal->j_bdev_file, cur_dblock, sb->s_blocksize, SB_ONDISK_JOURNAL_1st_BLOCK(sb) + SB_ONDISK_JOURNAL_SIZE(sb)); diff --git a/fs/reiserfs/prints.c b/fs/reiserfs/prints.c index 84a194b77f19..249a458b6e28 100644 --- a/fs/reiserfs/prints.c +++ b/fs/reiserfs/prints.c @@ -156,7 +156,7 @@ static int scnprintf_buffer_head(char *buf, size_t size, struct buffer_head *bh) { return scnprintf(buf, size, "dev %pg, size %zd, blocknr %llu, count %d, state 0x%lx, page %p, (%s, %s, %s)", - bh->b_bdev, bh->b_size, + bh_bdev(bh), bh->b_size, (unsigned long long)bh->b_blocknr, atomic_read(&(bh->b_count)), bh->b_state, bh->b_page, @@ -561,7 +561,7 @@ static int print_super_block(struct buffer_head *bh) return 1; } - printk("%pg\'s super block is in block %llu\n", bh->b_bdev, + printk("%pg\'s super block is in block %llu\n", bh_bdev(bh), (unsigned long long)bh->b_blocknr); printk("Reiserfs version %s\n", version); printk("Block count %u\n", sb_block_count(rs)); diff --git a/fs/reiserfs/reiserfs.h b/fs/reiserfs/reiserfs.h index f0e1f29f20ee..49caa7c42fb7 100644 --- a/fs/reiserfs/reiserfs.h +++ b/fs/reiserfs/reiserfs.h @@ -2810,10 +2810,10 @@ struct reiserfs_journal_header { /* We need these to make journal.c code more readable */ #define journal_find_get_block(s, block) __find_get_block(\ - file_bdev(SB_JOURNAL(s)->j_bdev_file), block, s->s_blocksize) -#define journal_getblk(s, block) __getblk(file_bdev(SB_JOURNAL(s)->j_bdev_file),\ + SB_JOURNAL(s)->j_bdev_file, block, s->s_blocksize) +#define journal_getblk(s, block) __getblk(SB_JOURNAL(s)->j_bdev_file,\ block, s->s_blocksize) -#define journal_bread(s, block) __bread(file_bdev(SB_JOURNAL(s)->j_bdev_file),\ +#define journal_bread(s, block) __bread(SB_JOURNAL(s)->j_bdev_file,\ block, s->s_blocksize) enum reiserfs_bh_state_bits { diff --git a/fs/reiserfs/stree.c b/fs/reiserfs/stree.c index 5faf702f8d15..23998f071d9c 100644 --- a/fs/reiserfs/stree.c +++ b/fs/reiserfs/stree.c @@ -331,7 +331,7 @@ static inline int key_in_buffer( || chk_path->path_length > MAX_HEIGHT, "PAP-5050: pointer to the key(%p) is NULL or invalid path length(%d)", key, chk_path->path_length); - RFALSE(!PATH_PLAST_BUFFER(chk_path)->b_bdev, + RFALSE(!bh_bdev(PATH_PLAST_BUFFER(chk_path)), "PAP-5060: device must not be NODEV"); if (comp_keys(get_lkey(chk_path, sb), key) == 1) diff --git a/fs/reiserfs/tail_conversion.c b/fs/reiserfs/tail_conversion.c index 2cec61af2a9e..f38dfae74e32 100644 --- a/fs/reiserfs/tail_conversion.c +++ b/fs/reiserfs/tail_conversion.c @@ -187,7 +187,7 @@ void reiserfs_unmap_buffer(struct buffer_head *bh) clear_buffer_mapped(bh); clear_buffer_req(bh); clear_buffer_new(bh); - bh->b_bdev = NULL; + bh->b_bdev_file = NULL; unlock_buffer(bh); } diff --git a/fs/xfs/xfs_iomap.c b/fs/xfs/xfs_iomap.c index 18c8f168b153..c06d41bbb919 100644 --- a/fs/xfs/xfs_iomap.c +++ b/fs/xfs/xfs_iomap.c @@ -125,7 +125,7 @@ xfs_bmbt_to_iomap( if (mapping_flags & IOMAP_DAX) iomap->dax_dev = target->bt_daxdev; else - iomap->bdev = target->bt_bdev; + iomap->bdev_file = target->bt_bdev_file; iomap->flags = iomap_flags; if (xfs_ipincount(ip) && @@ -150,7 +150,7 @@ xfs_hole_to_iomap( iomap->type = IOMAP_HOLE; iomap->offset = XFS_FSB_TO_B(ip->i_mount, offset_fsb); iomap->length = XFS_FSB_TO_B(ip->i_mount, end_fsb - offset_fsb); - iomap->bdev = target->bt_bdev; + iomap->bdev_file = target->bt_bdev_file; iomap->dax_dev = target->bt_daxdev; } diff --git a/fs/zonefs/file.c b/fs/zonefs/file.c index 8dab4c2ad300..e454d08ad7d0 100644 --- a/fs/zonefs/file.c +++ b/fs/zonefs/file.c @@ -38,7 +38,7 @@ static int zonefs_read_iomap_begin(struct inode *inode, loff_t offset, * act as if there is a hole up to the file maximum size. */ mutex_lock(&zi->i_truncate_mutex); - iomap->bdev = inode->i_sb->s_bdev; + iomap->bdev_file = inode->i_sb->s_bdev_file; iomap->offset = ALIGN_DOWN(offset, sb->s_blocksize); isize = i_size_read(inode); if (iomap->offset >= isize) { @@ -88,7 +88,7 @@ static int zonefs_write_iomap_begin(struct inode *inode, loff_t offset, * write pointer) and unwriten beyond. */ mutex_lock(&zi->i_truncate_mutex); - iomap->bdev = inode->i_sb->s_bdev; + iomap->bdev_file = inode->i_sb->s_bdev_file; iomap->offset = ALIGN_DOWN(offset, sb->s_blocksize); iomap->addr = (z->z_sector << SECTOR_SHIFT) + iomap->offset; isize = i_size_read(inode); diff --git a/include/linux/blk_types.h b/include/linux/blk_types.h index 1c07848dea7e..79c652f42e57 100644 --- a/include/linux/blk_types.h +++ b/include/linux/blk_types.h @@ -49,7 +49,6 @@ struct block_device { bool bd_write_holder; bool bd_has_submit_bio; dev_t bd_dev; - struct inode *bd_inode; /* will die */ atomic_t bd_openers; spinlock_t bd_size_lock; /* for bd_inode->i_size updates */ diff --git a/include/linux/blkdev.h b/include/linux/blkdev.h index 3fb02e3a527a..f3bc2e77999a 100644 --- a/include/linux/blkdev.h +++ b/include/linux/blkdev.h @@ -1524,6 +1524,8 @@ struct block_device *I_BDEV(struct inode *inode); struct block_device *file_bdev(struct file *bdev_file); bool disk_live(struct gendisk *disk); unsigned int block_size(struct block_device *bdev); +void clean_bdev_aliases2(struct block_device *bdev, sector_t block, + sector_t len); #ifdef CONFIG_BLOCK void invalidate_bdev(struct block_device *bdev); diff --git a/include/linux/buffer_head.h b/include/linux/buffer_head.h index d78454a4dd1f..863af22f24c4 100644 --- a/include/linux/buffer_head.h +++ b/include/linux/buffer_head.h @@ -10,6 +10,7 @@ #include #include +#include #include #include #include @@ -34,6 +35,7 @@ enum bh_state_bits { BH_Meta, /* Buffer contains metadata */ BH_Prio, /* Buffer should be submitted with REQ_PRIO */ BH_Defer_Completion, /* Defer AIO completion to workqueue */ + BH_Bdev, BH_PrivateStart,/* not a state bit, but the first bit available * for private allocation by other entities @@ -68,7 +70,10 @@ struct buffer_head { size_t b_size; /* size of mapping */ char *b_data; /* pointer to data within the page */ - struct block_device *b_bdev; + union { + struct file *b_bdev_file; + struct block_device *b_bdev; + }; bh_end_io_t *b_end_io; /* I/O completion */ void *b_private; /* reserved for b_end_io */ struct list_head b_assoc_buffers; /* associated with another mapping */ @@ -135,6 +140,14 @@ BUFFER_FNS(Unwritten, unwritten) BUFFER_FNS(Meta, meta) BUFFER_FNS(Prio, prio) BUFFER_FNS(Defer_Completion, defer_completion) +BUFFER_FNS(Bdev, bdev) + +static __always_inline struct block_device *bh_bdev(struct buffer_head *bh) +{ + if (buffer_bdev(bh)) + return bh->b_bdev; + return file_bdev(bh->b_bdev_file); +} static __always_inline void set_buffer_uptodate(struct buffer_head *bh) { @@ -212,24 +225,33 @@ int generic_buffers_fsync_noflush(struct file *file, loff_t start, loff_t end, bool datasync); int generic_buffers_fsync(struct file *file, loff_t start, loff_t end, bool datasync); -void clean_bdev_aliases(struct block_device *bdev, sector_t block, - sector_t len); +void __clean_bdev_aliases(struct inode *inode, sector_t block, sector_t len); + +static inline void clean_bdev_aliases(struct file *bdev_file, sector_t block, + sector_t len) +{ + return __clean_bdev_aliases(file_inode(bdev_file), block, len); +} + static inline void clean_bdev_bh_alias(struct buffer_head *bh) { - clean_bdev_aliases(bh->b_bdev, bh->b_blocknr, 1); + if (buffer_bdev(bh)) + clean_bdev_aliases2(bh->b_bdev, bh->b_blocknr, 1); + else + clean_bdev_aliases(bh->b_bdev_file, bh->b_blocknr, 1); } void mark_buffer_async_write(struct buffer_head *bh); void __wait_on_buffer(struct buffer_head *); wait_queue_head_t *bh_waitq_head(struct buffer_head *bh); -struct buffer_head *__find_get_block(struct block_device *bdev, sector_t block, +struct buffer_head *__find_get_block(struct file *bdev_file, sector_t block, unsigned size); -struct buffer_head *bdev_getblk(struct block_device *bdev, sector_t block, +struct buffer_head *bdev_getblk(struct file *bdev_file, sector_t block, unsigned size, gfp_t gfp); void __brelse(struct buffer_head *); void __bforget(struct buffer_head *); -void __breadahead(struct block_device *, sector_t block, unsigned int size); -struct buffer_head *__bread_gfp(struct block_device *, +void __breadahead(struct file *bdev_file, sector_t block, unsigned int size); +struct buffer_head *__bread_gfp(struct file *bdev_file, sector_t block, unsigned size, gfp_t gfp); struct buffer_head *alloc_buffer_head(gfp_t gfp_flags); void free_buffer_head(struct buffer_head * bh); @@ -239,7 +261,7 @@ int sync_dirty_buffer(struct buffer_head *bh); int __sync_dirty_buffer(struct buffer_head *bh, blk_opf_t op_flags); void write_dirty_buffer(struct buffer_head *bh, blk_opf_t op_flags); void submit_bh(blk_opf_t, struct buffer_head *); -void write_boundary_block(struct block_device *bdev, +void write_boundary_block(struct file *bdev_file, sector_t bblock, unsigned blocksize); int bh_uptodate_or_lock(struct buffer_head *bh); int __bh_read(struct buffer_head *bh, blk_opf_t op_flags, bool wait); @@ -318,66 +340,67 @@ static inline void bforget(struct buffer_head *bh) static inline struct buffer_head * sb_bread(struct super_block *sb, sector_t block) { - return __bread_gfp(sb->s_bdev, block, sb->s_blocksize, __GFP_MOVABLE); + return __bread_gfp(sb->s_bdev_file, block, sb->s_blocksize, + __GFP_MOVABLE); } static inline struct buffer_head * sb_bread_unmovable(struct super_block *sb, sector_t block) { - return __bread_gfp(sb->s_bdev, block, sb->s_blocksize, 0); + return __bread_gfp(sb->s_bdev_file, block, sb->s_blocksize, 0); } static inline void sb_breadahead(struct super_block *sb, sector_t block) { - __breadahead(sb->s_bdev, block, sb->s_blocksize); + __breadahead(sb->s_bdev_file, block, sb->s_blocksize); } -static inline struct buffer_head *getblk_unmovable(struct block_device *bdev, +static inline struct buffer_head *getblk_unmovable(struct file *bdev_file, sector_t block, unsigned size) { gfp_t gfp; - gfp = mapping_gfp_constraint(bdev->bd_inode->i_mapping, ~__GFP_FS); + gfp = mapping_gfp_constraint(bdev_file->f_mapping, ~__GFP_FS); gfp |= __GFP_NOFAIL; - return bdev_getblk(bdev, block, size, gfp); + return bdev_getblk(bdev_file, block, size, gfp); } -static inline struct buffer_head *__getblk(struct block_device *bdev, +static inline struct buffer_head *__getblk(struct file *bdev_file, sector_t block, unsigned size) { gfp_t gfp; - gfp = mapping_gfp_constraint(bdev->bd_inode->i_mapping, ~__GFP_FS); + gfp = mapping_gfp_constraint(bdev_file->f_mapping, ~__GFP_FS); gfp |= __GFP_MOVABLE | __GFP_NOFAIL; - return bdev_getblk(bdev, block, size, gfp); + return bdev_getblk(bdev_file, block, size, gfp); } static inline struct buffer_head *sb_getblk(struct super_block *sb, sector_t block) { - return __getblk(sb->s_bdev, block, sb->s_blocksize); + return __getblk(sb->s_bdev_file, block, sb->s_blocksize); } static inline struct buffer_head *sb_getblk_gfp(struct super_block *sb, sector_t block, gfp_t gfp) { - return bdev_getblk(sb->s_bdev, block, sb->s_blocksize, gfp); + return bdev_getblk(sb->s_bdev_file, block, sb->s_blocksize, gfp); } static inline struct buffer_head * sb_find_get_block(struct super_block *sb, sector_t block) { - return __find_get_block(sb->s_bdev, block, sb->s_blocksize); + return __find_get_block(sb->s_bdev_file, block, sb->s_blocksize); } static inline void map_bh(struct buffer_head *bh, struct super_block *sb, sector_t block) { set_buffer_mapped(bh); - bh->b_bdev = sb->s_bdev; + bh->b_bdev_file = sb->s_bdev_file; bh->b_blocknr = block; bh->b_size = sb->s_blocksize; } @@ -438,7 +461,7 @@ static inline void bh_readahead_batch(int nr, struct buffer_head *bhs[], /** * __bread() - reads a specified block and returns the bh - * @bdev: the block_device to read from + * @bdev_file: the opened block_device to read from * @block: number of block * @size: size (in bytes) to read * @@ -447,9 +470,9 @@ static inline void bh_readahead_batch(int nr, struct buffer_head *bhs[], * It returns NULL if the block was unreadable. */ static inline struct buffer_head * -__bread(struct block_device *bdev, sector_t block, unsigned size) +__bread(struct file *bdev_file, sector_t block, unsigned int size) { - return __bread_gfp(bdev, block, size, __GFP_MOVABLE); + return __bread_gfp(bdev_file, block, size, __GFP_MOVABLE); } /** diff --git a/include/linux/iomap.h b/include/linux/iomap.h index 6fc1c858013d..176b202a2c7d 100644 --- a/include/linux/iomap.h +++ b/include/linux/iomap.h @@ -77,6 +77,7 @@ struct vm_fault; */ #define IOMAP_F_SIZE_CHANGED (1U << 8) #define IOMAP_F_STALE (1U << 9) +#define IOMAP_F_BDEV (1U << 10) /* * Flags from 0x1000 up are for file system specific usage: @@ -97,7 +98,11 @@ struct iomap { u64 length; /* length of mapping, bytes */ u16 type; /* type of mapping */ u16 flags; /* flags for mapping */ - struct block_device *bdev; /* block device for I/O */ + union { + /* block device for I/O */ + struct block_device *bdev; + struct file *bdev_file; + }; struct dax_device *dax_dev; /* dax_dev for dax operations */ void *inline_data; void *private; /* filesystem private */ @@ -105,6 +110,13 @@ struct iomap { u64 validity_cookie; /* used with .iomap_valid() */ }; +static inline struct block_device *iomap_bdev(const struct iomap *iomap) +{ + if (iomap->flags & IOMAP_F_BDEV) + return iomap->bdev; + return file_bdev(iomap->bdev_file); +} + static inline sector_t iomap_sector(const struct iomap *iomap, loff_t pos) { return (iomap->addr + pos - iomap->offset) >> SECTOR_SHIFT; diff --git a/include/trace/events/block.h b/include/trace/events/block.h index 0e128ad51460..95d3ed978864 100644 --- a/include/trace/events/block.h +++ b/include/trace/events/block.h @@ -26,7 +26,7 @@ DECLARE_EVENT_CLASS(block_buffer, ), TP_fast_assign( - __entry->dev = bh->b_bdev->bd_dev; + __entry->dev = bh_bdev(bh)->bd_dev; __entry->sector = bh->b_blocknr; __entry->size = bh->b_size; ),