bd_write_holder 1729 fs/block_dev.c if (!res && (mode & FMODE_WRITE) && !bdev->bd_write_holder && bd_write_holder 1731 fs/block_dev.c bdev->bd_write_holder = true; bd_write_holder 1918 fs/block_dev.c if (bdev_free && bdev->bd_write_holder) { bd_write_holder 1920 fs/block_dev.c bdev->bd_write_holder = false; bd_write_holder 482 include/linux/fs.h bool bd_write_holder;