From mboxrd@z Thu Jan 1 00:00:00 1970 From: Christoph Hellwig Subject: [PATCH 06/12] fs: use the super_block as holder when mounting file systems Date: Wed, 2 Aug 2023 17:41:25 +0200 Message-ID: <20230802154131.2221419-7-hch@lst.de> References: <20230802154131.2221419-1-hch@lst.de> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Return-path: DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=sourceforge.net; s=x; h=Content-Transfer-Encoding:MIME-Version:References: In-Reply-To:Message-Id:Date:Subject:Cc:To:From:Sender:Reply-To:Content-Type: Content-ID:Content-Description:Resent-Date:Resent-From:Resent-Sender: Resent-To:Resent-Cc:Resent-Message-ID:List-Id:List-Help:List-Unsubscribe: List-Subscribe:List-Post:List-Owner:List-Archive; bh=M1CYJB5aZHpSvwyG1hOGEAK3efdcwABvgd5jbMJTCG8=; b=DfpK+3eqqsb+GDiap23vZV3+aV 46J3LhWB7rVnpsnV+Hf1H1CCfIanjQQfVRdYj9AcM9qhTsPfO/6tU/8Lcq8uoUcEkxfgzQx0XVPny I3jHgQvOVjQZHP8w5NmzZNbWREsHllOqkvbn93npsuxBDVSSn3CBrVogFxReg1SWhVb0=; DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=sf.net; s=x ; h=Content-Transfer-Encoding:MIME-Version:References:In-Reply-To:Message-Id: Date:Subject:Cc:To:From:Sender:Reply-To:Content-Type:Content-ID: Content-Description:Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc :Resent-Message-ID:List-Id:List-Help:List-Unsubscribe:List-Subscribe: List-Post:List-Owner:List-Archive; bh=M1CYJB5aZHpSvwyG1hOGEAK3efdcwABvgd5jbMJTCG8=; b=MnWt63AlV68rWWuvh4X84Bj1HS 2RI1o2XW8INsJFoc6toBpz/n7qLBGA1Eryc7JZNQXZuVcJD93FtT88ZByqlfn5A3IZsTmC5Jqlg4X iydgHj5jFXL21bolpprTghy6RFHCDvj6DlQiW6eYjVPFY7E2LcOGpQTnBo2TbT+mBZJ8=; DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=infradead.org; s=bombadil.20210309; h=Content-Transfer-Encoding: MIME-Version:References:In-Reply-To:Message-Id:Date:Subject:Cc:To:From:Sender :Reply-To:Content-Type:Content-ID:Content-Description; bh=M1CYJB5aZHpSvwyG1hOGEAK3efdcwABvgd5jbMJTCG8=; b=4M2U9E2zBIKq45Q55cHcXCmYTg gAnYWD0UBubVeGE8flbFzHcT2SAbc9FEd/qFH3xmSbWluAsI7ww7kYoPqlU3QRz8RzFRKLHIzCgsf cr+3pEEMdDlLG1z5QCdKhFRnxuZje6F/ETjowj21lvzt7iG5qDNkgAKTduXm8RM6mxtnghjEmUiaS 7mgukROVBAbdXXqRfUtEp/TlgAYZIPJaVLwJpzJz5iuX46JRBvvwzLD9hgz9rnWt+GHxif423Xbbh VxSnMzgn7bE0RP3Snb8vXJU9C2OAa1FWQ+NPZeXwjgltT9BQvqIRMcNdE46+kaNcA/LQM6OmRuIiT 4Jzx0irw==; In-Reply-To: <20230802154131.2221419-1-hch@lst.de> List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: linux-f2fs-devel-bounces@lists.sourceforge.net To: Al Viro , Christian Brauner Cc: Jens Axboe , linux-block@vger.kernel.org, linux-nilfs@vger.kernel.org, Jan Kara , linux-fsdevel@vger.kernel.org, "Darrick J. Wong" , Josef Bacik , linux-f2fs-devel@lists.sourceforge.net, linux-xfs@vger.kernel.org, Chris Mason , Andreas Dilger , Jaegeuk Kim , David Sterba , Theodore Ts'o , linux-ext4@vger.kernel.org, Ryusuke Konishi , linux-btrfs@vger.kernel.org The file system type is not a very useful holder as it doesn't allow us to go back to the actual file system instance. Pass the super_block instead which is useful when passed back to the file system driver. Signed-off-by: Christoph Hellwig --- fs/btrfs/super.c | 7 ++----- fs/f2fs/super.c | 7 +++---- fs/super.c | 8 ++++---- 3 files changed, 9 insertions(+), 13 deletions(-) diff --git a/fs/btrfs/super.c b/fs/btrfs/super.c index 5980b5dcc6b163..8a47c7f2690880 100644 --- a/fs/btrfs/super.c +++ b/fs/btrfs/super.c @@ -69,8 +69,6 @@ static const struct super_operations btrfs_super_ops; * requested by subvol=/path. That way the callchain is straightforward and we * don't have to play tricks with the mount options and recursive calls to * btrfs_mount. - * - * The new btrfs_root_fs_type also servers as a tag for the bdev_holder. */ static struct file_system_type btrfs_fs_type; static struct file_system_type btrfs_root_fs_type; @@ -1498,8 +1496,7 @@ static struct dentry *btrfs_mount_root(struct file_system_type *fs_type, } else { struct btrfs_fs_devices *fs_devices = fs_info->fs_devices; - error = btrfs_open_devices(fs_devices, sb_open_mode(flags), - fs_type); + error = btrfs_open_devices(fs_devices, sb_open_mode(flags), s); if (error) goto out_deactivate; @@ -1513,7 +1510,7 @@ static struct dentry *btrfs_mount_root(struct file_system_type *fs_type, fs_devices->latest_dev->bdev); shrinker_debugfs_rename(&s->s_shrink, "sb-%s:%s", fs_type->name, s->s_id); - btrfs_sb(s)->bdev_holder = fs_type; + fs_info->bdev_holder = s; error = btrfs_fill_super(s, fs_devices, data); } if (!error) diff --git a/fs/f2fs/super.c b/fs/f2fs/super.c index ca31163da00a55..05c90fdb7a6cca 100644 --- a/fs/f2fs/super.c +++ b/fs/f2fs/super.c @@ -1561,7 +1561,7 @@ static void destroy_device_list(struct f2fs_sb_info *sbi) int i; for (i = 0; i < sbi->s_ndevs; i++) { - blkdev_put(FDEV(i).bdev, sbi->sb->s_type); + blkdev_put(FDEV(i).bdev, sbi->sb); #ifdef CONFIG_BLK_DEV_ZONED kvfree(FDEV(i).blkz_seq); #endif @@ -4198,7 +4198,7 @@ static int f2fs_scan_devices(struct f2fs_sb_info *sbi) /* Single zoned block device mount */ FDEV(0).bdev = blkdev_get_by_dev(sbi->sb->s_bdev->bd_dev, mode, - sbi->sb->s_type, NULL); + sbi->sb, NULL); } else { /* Multi-device mount */ memcpy(FDEV(i).path, RDEV(i).path, MAX_PATH_LEN); @@ -4217,8 +4217,7 @@ static int f2fs_scan_devices(struct f2fs_sb_info *sbi) sbi->log_blocks_per_seg) - 1; } FDEV(i).bdev = blkdev_get_by_path(FDEV(i).path, mode, - sbi->sb->s_type, - NULL); + sbi->sb, NULL); } if (IS_ERR(FDEV(i).bdev)) return PTR_ERR(FDEV(i).bdev); diff --git a/fs/super.c b/fs/super.c index 6aaa275fa8630d..09b65ee1a8b737 100644 --- a/fs/super.c +++ b/fs/super.c @@ -1249,7 +1249,7 @@ int setup_bdev_super(struct super_block *sb, int sb_flags, blk_mode_t mode = sb_open_mode(sb_flags); struct block_device *bdev; - bdev = blkdev_get_by_dev(sb->s_dev, mode, sb->s_type, &fs_holder_ops); + bdev = blkdev_get_by_dev(sb->s_dev, mode, sb, &fs_holder_ops); if (IS_ERR(bdev)) { if (fc) errorf(fc, "%s: Can't open blockdev", fc->source); @@ -1262,7 +1262,7 @@ int setup_bdev_super(struct super_block *sb, int sb_flags, * writable from userspace even for a read-only block device. */ if ((mode & BLK_OPEN_WRITE) && bdev_read_only(bdev)) { - blkdev_put(bdev, sb->s_type); + blkdev_put(bdev, sb); return -EACCES; } @@ -1278,7 +1278,7 @@ int setup_bdev_super(struct super_block *sb, int sb_flags, mutex_unlock(&bdev->bd_fsfreeze_mutex); if (fc) warnf(fc, "%pg: Can't mount, blockdev is frozen", bdev); - blkdev_put(bdev, sb->s_type); + blkdev_put(bdev, sb); return -EBUSY; } spin_lock(&sb_lock); @@ -1418,7 +1418,7 @@ void kill_block_super(struct super_block *sb) if (bdev) { bdev->bd_super = NULL; sync_blockdev(bdev); - blkdev_put(bdev, sb->s_type); + blkdev_put(bdev, sb); } } -- 2.39.2