btrfs: Convert to bdev_open_by_path()
Convert btrfs to use bdev_open_by_path() and pass the handle around. We also drop the holder from struct btrfs_device as it is now not needed anymore. CC: David Sterba <dsterba@suse.com> CC: linux-btrfs@vger.kernel.org Acked-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Christian Brauner <brauner@kernel.org> Signed-off-by: Jan Kara <jack@suse.cz> Link: https://lore.kernel.org/r/20230927093442.25915-20-jack@suse.cz Signed-off-by: Christian Brauner <brauner@kernel.org>
This commit is contained in:
parent
f4a48bc36c
commit
86ec15d00b
@ -247,6 +247,7 @@ static int btrfs_init_dev_replace_tgtdev(struct btrfs_fs_info *fs_info,
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{
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struct btrfs_fs_devices *fs_devices = fs_info->fs_devices;
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struct btrfs_device *device;
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struct bdev_handle *bdev_handle;
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struct block_device *bdev;
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u64 devid = BTRFS_DEV_REPLACE_DEVID;
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int ret = 0;
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@ -257,12 +258,13 @@ static int btrfs_init_dev_replace_tgtdev(struct btrfs_fs_info *fs_info,
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return -EINVAL;
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}
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bdev = blkdev_get_by_path(device_path, BLK_OPEN_WRITE,
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bdev_handle = bdev_open_by_path(device_path, BLK_OPEN_WRITE,
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fs_info->bdev_holder, NULL);
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if (IS_ERR(bdev)) {
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if (IS_ERR(bdev_handle)) {
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btrfs_err(fs_info, "target device %s is invalid!", device_path);
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return PTR_ERR(bdev);
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return PTR_ERR(bdev_handle);
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}
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bdev = bdev_handle->bdev;
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if (!btrfs_check_device_zone_type(fs_info, bdev)) {
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btrfs_err(fs_info,
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@ -313,9 +315,9 @@ static int btrfs_init_dev_replace_tgtdev(struct btrfs_fs_info *fs_info,
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device->commit_bytes_used = device->bytes_used;
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device->fs_info = fs_info;
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device->bdev = bdev;
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device->bdev_handle = bdev_handle;
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set_bit(BTRFS_DEV_STATE_IN_FS_METADATA, &device->dev_state);
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set_bit(BTRFS_DEV_STATE_REPLACE_TGT, &device->dev_state);
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device->holder = fs_info->bdev_holder;
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device->dev_stats_valid = 1;
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set_blocksize(device->bdev, BTRFS_BDEV_BLOCKSIZE);
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device->fs_devices = fs_devices;
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@ -334,7 +336,7 @@ static int btrfs_init_dev_replace_tgtdev(struct btrfs_fs_info *fs_info,
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return 0;
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error:
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blkdev_put(bdev, fs_info->bdev_holder);
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bdev_release(bdev_handle);
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return ret;
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}
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@ -2676,8 +2676,7 @@ static long btrfs_ioctl_rm_dev_v2(struct file *file, void __user *arg)
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struct inode *inode = file_inode(file);
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struct btrfs_fs_info *fs_info = btrfs_sb(inode->i_sb);
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struct btrfs_ioctl_vol_args_v2 *vol_args;
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struct block_device *bdev = NULL;
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void *holder;
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struct bdev_handle *bdev_handle = NULL;
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int ret;
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bool cancel = false;
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@ -2714,7 +2713,7 @@ static long btrfs_ioctl_rm_dev_v2(struct file *file, void __user *arg)
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goto err_drop;
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/* Exclusive operation is now claimed */
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ret = btrfs_rm_device(fs_info, &args, &bdev, &holder);
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ret = btrfs_rm_device(fs_info, &args, &bdev_handle);
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btrfs_exclop_finish(fs_info);
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@ -2728,8 +2727,8 @@ static long btrfs_ioctl_rm_dev_v2(struct file *file, void __user *arg)
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}
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err_drop:
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mnt_drop_write_file(file);
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if (bdev)
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blkdev_put(bdev, holder);
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if (bdev_handle)
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bdev_release(bdev_handle);
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out:
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btrfs_put_dev_args_from_path(&args);
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kfree(vol_args);
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@ -2742,8 +2741,7 @@ static long btrfs_ioctl_rm_dev(struct file *file, void __user *arg)
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struct inode *inode = file_inode(file);
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struct btrfs_fs_info *fs_info = btrfs_sb(inode->i_sb);
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struct btrfs_ioctl_vol_args *vol_args;
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struct block_device *bdev = NULL;
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void *holder;
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struct bdev_handle *bdev_handle = NULL;
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int ret;
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bool cancel = false;
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@ -2770,15 +2768,15 @@ static long btrfs_ioctl_rm_dev(struct file *file, void __user *arg)
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ret = exclop_start_or_cancel_reloc(fs_info, BTRFS_EXCLOP_DEV_REMOVE,
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cancel);
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if (ret == 0) {
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ret = btrfs_rm_device(fs_info, &args, &bdev, &holder);
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ret = btrfs_rm_device(fs_info, &args, &bdev_handle);
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if (!ret)
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btrfs_info(fs_info, "disk deleted %s", vol_args->name);
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btrfs_exclop_finish(fs_info);
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}
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mnt_drop_write_file(file);
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if (bdev)
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blkdev_put(bdev, holder);
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if (bdev_handle)
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bdev_release(bdev_handle);
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out:
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btrfs_put_dev_args_from_path(&args);
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kfree(vol_args);
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@ -511,37 +511,39 @@ static struct btrfs_fs_devices *find_fsid_with_metadata_uuid(
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static int
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btrfs_get_bdev_and_sb(const char *device_path, blk_mode_t flags, void *holder,
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int flush, struct block_device **bdev,
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int flush, struct bdev_handle **bdev_handle,
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struct btrfs_super_block **disk_super)
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{
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struct block_device *bdev;
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int ret;
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*bdev = blkdev_get_by_path(device_path, flags, holder, NULL);
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*bdev_handle = bdev_open_by_path(device_path, flags, holder, NULL);
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if (IS_ERR(*bdev)) {
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ret = PTR_ERR(*bdev);
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if (IS_ERR(*bdev_handle)) {
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ret = PTR_ERR(*bdev_handle);
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goto error;
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}
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bdev = (*bdev_handle)->bdev;
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if (flush)
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sync_blockdev(*bdev);
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ret = set_blocksize(*bdev, BTRFS_BDEV_BLOCKSIZE);
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sync_blockdev(bdev);
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ret = set_blocksize(bdev, BTRFS_BDEV_BLOCKSIZE);
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if (ret) {
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blkdev_put(*bdev, holder);
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bdev_release(*bdev_handle);
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goto error;
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}
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invalidate_bdev(*bdev);
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*disk_super = btrfs_read_dev_super(*bdev);
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invalidate_bdev(bdev);
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*disk_super = btrfs_read_dev_super(bdev);
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if (IS_ERR(*disk_super)) {
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ret = PTR_ERR(*disk_super);
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blkdev_put(*bdev, holder);
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bdev_release(*bdev_handle);
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goto error;
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}
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return 0;
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error:
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*bdev = NULL;
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*bdev_handle = NULL;
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return ret;
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}
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@ -613,7 +615,7 @@ static int btrfs_open_one_device(struct btrfs_fs_devices *fs_devices,
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struct btrfs_device *device, blk_mode_t flags,
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void *holder)
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{
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struct block_device *bdev;
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struct bdev_handle *bdev_handle;
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struct btrfs_super_block *disk_super;
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u64 devid;
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int ret;
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@ -624,7 +626,7 @@ static int btrfs_open_one_device(struct btrfs_fs_devices *fs_devices,
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return -EINVAL;
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ret = btrfs_get_bdev_and_sb(device->name->str, flags, holder, 1,
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&bdev, &disk_super);
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&bdev_handle, &disk_super);
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if (ret)
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return ret;
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@ -648,21 +650,21 @@ static int btrfs_open_one_device(struct btrfs_fs_devices *fs_devices,
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clear_bit(BTRFS_DEV_STATE_WRITEABLE, &device->dev_state);
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fs_devices->seeding = true;
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} else {
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if (bdev_read_only(bdev))
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if (bdev_read_only(bdev_handle->bdev))
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clear_bit(BTRFS_DEV_STATE_WRITEABLE, &device->dev_state);
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else
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set_bit(BTRFS_DEV_STATE_WRITEABLE, &device->dev_state);
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}
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if (!bdev_nonrot(bdev))
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if (!bdev_nonrot(bdev_handle->bdev))
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fs_devices->rotating = true;
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if (bdev_max_discard_sectors(bdev))
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if (bdev_max_discard_sectors(bdev_handle->bdev))
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fs_devices->discardable = true;
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device->bdev = bdev;
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device->bdev_handle = bdev_handle;
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device->bdev = bdev_handle->bdev;
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clear_bit(BTRFS_DEV_STATE_IN_FS_METADATA, &device->dev_state);
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device->holder = holder;
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fs_devices->open_devices++;
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if (test_bit(BTRFS_DEV_STATE_WRITEABLE, &device->dev_state) &&
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@ -676,7 +678,7 @@ static int btrfs_open_one_device(struct btrfs_fs_devices *fs_devices,
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error_free_page:
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btrfs_release_disk_super(disk_super);
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blkdev_put(bdev, holder);
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bdev_release(bdev_handle);
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return -EINVAL;
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}
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@ -1068,9 +1070,10 @@ static void __btrfs_free_extra_devids(struct btrfs_fs_devices *fs_devices,
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if (device->devid == BTRFS_DEV_REPLACE_DEVID)
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continue;
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if (device->bdev) {
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blkdev_put(device->bdev, device->holder);
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if (device->bdev_handle) {
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bdev_release(device->bdev_handle);
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device->bdev = NULL;
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device->bdev_handle = NULL;
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fs_devices->open_devices--;
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}
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if (test_bit(BTRFS_DEV_STATE_WRITEABLE, &device->dev_state)) {
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@ -1115,7 +1118,7 @@ static void btrfs_close_bdev(struct btrfs_device *device)
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invalidate_bdev(device->bdev);
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}
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blkdev_put(device->bdev, device->holder);
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bdev_release(device->bdev_handle);
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}
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static void btrfs_close_one_device(struct btrfs_device *device)
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@ -1363,7 +1366,7 @@ struct btrfs_device *btrfs_scan_one_device(const char *path, blk_mode_t flags)
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struct btrfs_super_block *disk_super;
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bool new_device_added = false;
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struct btrfs_device *device = NULL;
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struct block_device *bdev;
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struct bdev_handle *bdev_handle;
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u64 bytenr, bytenr_orig;
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int ret;
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@ -1386,18 +1389,19 @@ struct btrfs_device *btrfs_scan_one_device(const char *path, blk_mode_t flags)
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* values temporarily, as the device paths of the fsid are the only
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* required information for assembling the volume.
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*/
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bdev = blkdev_get_by_path(path, flags, NULL, NULL);
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if (IS_ERR(bdev))
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return ERR_CAST(bdev);
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bdev_handle = bdev_open_by_path(path, flags, NULL, NULL);
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if (IS_ERR(bdev_handle))
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return ERR_CAST(bdev_handle);
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bytenr_orig = btrfs_sb_offset(0);
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ret = btrfs_sb_log_location_bdev(bdev, 0, READ, &bytenr);
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ret = btrfs_sb_log_location_bdev(bdev_handle->bdev, 0, READ, &bytenr);
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if (ret) {
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device = ERR_PTR(ret);
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goto error_bdev_put;
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}
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disk_super = btrfs_read_disk_super(bdev, bytenr, bytenr_orig);
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disk_super = btrfs_read_disk_super(bdev_handle->bdev, bytenr,
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bytenr_orig);
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if (IS_ERR(disk_super)) {
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device = ERR_CAST(disk_super);
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goto error_bdev_put;
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@ -1410,7 +1414,7 @@ struct btrfs_device *btrfs_scan_one_device(const char *path, blk_mode_t flags)
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btrfs_release_disk_super(disk_super);
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error_bdev_put:
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blkdev_put(bdev, NULL);
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bdev_release(bdev_handle);
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return device;
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}
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@ -2087,7 +2091,7 @@ void btrfs_scratch_superblocks(struct btrfs_fs_info *fs_info,
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int btrfs_rm_device(struct btrfs_fs_info *fs_info,
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struct btrfs_dev_lookup_args *args,
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struct block_device **bdev, void **holder)
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struct bdev_handle **bdev_handle)
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{
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struct btrfs_trans_handle *trans;
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struct btrfs_device *device;
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@ -2196,7 +2200,7 @@ int btrfs_rm_device(struct btrfs_fs_info *fs_info,
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btrfs_assign_next_active_device(device, NULL);
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if (device->bdev) {
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if (device->bdev_handle) {
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cur_devices->open_devices--;
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/* remove sysfs entry */
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btrfs_sysfs_remove_device(device);
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@ -2212,9 +2216,9 @@ int btrfs_rm_device(struct btrfs_fs_info *fs_info,
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* free the device.
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*
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* We cannot call btrfs_close_bdev() here because we're holding the sb
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* write lock, and blkdev_put() will pull in the ->open_mutex on the
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* block device and it's dependencies. Instead just flush the device
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* and let the caller do the final blkdev_put.
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* write lock, and bdev_release() will pull in the ->open_mutex on
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* the block device and it's dependencies. Instead just flush the
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* device and let the caller do the final bdev_release.
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*/
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if (test_bit(BTRFS_DEV_STATE_WRITEABLE, &device->dev_state)) {
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btrfs_scratch_superblocks(fs_info, device->bdev,
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@ -2225,8 +2229,7 @@ int btrfs_rm_device(struct btrfs_fs_info *fs_info,
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}
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}
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*bdev = device->bdev;
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*holder = device->holder;
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*bdev_handle = device->bdev_handle;
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synchronize_rcu();
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btrfs_free_device(device);
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@ -2363,7 +2366,7 @@ int btrfs_get_dev_args_from_path(struct btrfs_fs_info *fs_info,
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const char *path)
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{
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struct btrfs_super_block *disk_super;
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struct block_device *bdev;
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struct bdev_handle *bdev_handle;
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int ret;
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if (!path || !path[0])
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@ -2381,7 +2384,7 @@ int btrfs_get_dev_args_from_path(struct btrfs_fs_info *fs_info,
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}
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ret = btrfs_get_bdev_and_sb(path, BLK_OPEN_READ, NULL, 0,
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&bdev, &disk_super);
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&bdev_handle, &disk_super);
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if (ret) {
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btrfs_put_dev_args_from_path(args);
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return ret;
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@ -2394,7 +2397,7 @@ int btrfs_get_dev_args_from_path(struct btrfs_fs_info *fs_info,
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else
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memcpy(args->fsid, disk_super->fsid, BTRFS_FSID_SIZE);
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btrfs_release_disk_super(disk_super);
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blkdev_put(bdev, NULL);
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bdev_release(bdev_handle);
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return 0;
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}
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@ -2614,7 +2617,7 @@ int btrfs_init_new_device(struct btrfs_fs_info *fs_info, const char *device_path
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struct btrfs_root *root = fs_info->dev_root;
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struct btrfs_trans_handle *trans;
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struct btrfs_device *device;
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struct block_device *bdev;
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struct bdev_handle *bdev_handle;
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struct super_block *sb = fs_info->sb;
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struct btrfs_fs_devices *fs_devices = fs_info->fs_devices;
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struct btrfs_fs_devices *seed_devices = NULL;
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@ -2627,12 +2630,12 @@ int btrfs_init_new_device(struct btrfs_fs_info *fs_info, const char *device_path
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if (sb_rdonly(sb) && !fs_devices->seeding)
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return -EROFS;
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bdev = blkdev_get_by_path(device_path, BLK_OPEN_WRITE,
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bdev_handle = bdev_open_by_path(device_path, BLK_OPEN_WRITE,
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fs_info->bdev_holder, NULL);
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if (IS_ERR(bdev))
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return PTR_ERR(bdev);
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if (IS_ERR(bdev_handle))
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return PTR_ERR(bdev_handle);
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if (!btrfs_check_device_zone_type(fs_info, bdev)) {
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if (!btrfs_check_device_zone_type(fs_info, bdev_handle->bdev)) {
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ret = -EINVAL;
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goto error;
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}
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@ -2644,11 +2647,11 @@ int btrfs_init_new_device(struct btrfs_fs_info *fs_info, const char *device_path
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locked = true;
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}
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sync_blockdev(bdev);
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sync_blockdev(bdev_handle->bdev);
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rcu_read_lock();
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list_for_each_entry_rcu(device, &fs_devices->devices, dev_list) {
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if (device->bdev == bdev) {
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if (device->bdev == bdev_handle->bdev) {
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ret = -EEXIST;
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rcu_read_unlock();
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goto error;
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@ -2664,7 +2667,8 @@ int btrfs_init_new_device(struct btrfs_fs_info *fs_info, const char *device_path
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}
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device->fs_info = fs_info;
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device->bdev = bdev;
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device->bdev_handle = bdev_handle;
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device->bdev = bdev_handle->bdev;
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ret = lookup_bdev(device_path, &device->devt);
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if (ret)
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||||
goto error_free_device;
|
||||
@ -2685,12 +2689,11 @@ int btrfs_init_new_device(struct btrfs_fs_info *fs_info, const char *device_path
|
||||
device->io_align = fs_info->sectorsize;
|
||||
device->sector_size = fs_info->sectorsize;
|
||||
device->total_bytes =
|
||||
round_down(bdev_nr_bytes(bdev), fs_info->sectorsize);
|
||||
round_down(bdev_nr_bytes(device->bdev), fs_info->sectorsize);
|
||||
device->disk_total_bytes = device->total_bytes;
|
||||
device->commit_total_bytes = device->total_bytes;
|
||||
set_bit(BTRFS_DEV_STATE_IN_FS_METADATA, &device->dev_state);
|
||||
clear_bit(BTRFS_DEV_STATE_REPLACE_TGT, &device->dev_state);
|
||||
device->holder = fs_info->bdev_holder;
|
||||
device->dev_stats_valid = 1;
|
||||
set_blocksize(device->bdev, BTRFS_BDEV_BLOCKSIZE);
|
||||
|
||||
@ -2726,7 +2729,7 @@ int btrfs_init_new_device(struct btrfs_fs_info *fs_info, const char *device_path
|
||||
|
||||
atomic64_add(device->total_bytes, &fs_info->free_chunk_space);
|
||||
|
||||
if (!bdev_nonrot(bdev))
|
||||
if (!bdev_nonrot(device->bdev))
|
||||
fs_devices->rotating = true;
|
||||
|
||||
orig_super_total_bytes = btrfs_super_total_bytes(fs_info->super_copy);
|
||||
@ -2848,7 +2851,7 @@ error_free_zone:
|
||||
error_free_device:
|
||||
btrfs_free_device(device);
|
||||
error:
|
||||
blkdev_put(bdev, fs_info->bdev_holder);
|
||||
bdev_release(bdev_handle);
|
||||
if (locked) {
|
||||
mutex_unlock(&uuid_mutex);
|
||||
up_write(&sb->s_umount);
|
||||
|
@ -90,13 +90,11 @@ struct btrfs_device {
|
||||
|
||||
u64 generation;
|
||||
|
||||
struct bdev_handle *bdev_handle;
|
||||
struct block_device *bdev;
|
||||
|
||||
struct btrfs_zoned_device_info *zone_info;
|
||||
|
||||
/* block device holder for blkdev_get/put */
|
||||
void *holder;
|
||||
|
||||
/*
|
||||
* Device's major-minor number. Must be set even if the device is not
|
||||
* opened (bdev == NULL), unless the device is missing.
|
||||
@ -629,7 +627,7 @@ struct btrfs_device *btrfs_alloc_device(struct btrfs_fs_info *fs_info,
|
||||
void btrfs_put_dev_args_from_path(struct btrfs_dev_lookup_args *args);
|
||||
int btrfs_rm_device(struct btrfs_fs_info *fs_info,
|
||||
struct btrfs_dev_lookup_args *args,
|
||||
struct block_device **bdev, void **holder);
|
||||
struct bdev_handle **bdev_handle);
|
||||
void __exit btrfs_cleanup_fs_uuids(void);
|
||||
int btrfs_num_copies(struct btrfs_fs_info *fs_info, u64 logical, u64 len);
|
||||
int btrfs_grow_device(struct btrfs_trans_handle *trans,
|
||||
|
Loading…
Reference in New Issue
Block a user