website-struct

Struct: loop_device

Status

Regular

• In 4.4: ✅

  struct loop_device {
      int lo_number;
      atomic_t lo_refcnt;
      loff_t lo_offset;
      loff_t lo_sizelimit;
      int lo_flags;
      int (*transfer)(struct loop_device *, int, struct page *, unsigned int, struct page *, unsigned int, int, sector_t);
      char lo_file_name[64];
      char lo_crypt_name[64];
      char lo_encrypt_key[32];
      int lo_encrypt_key_size;
      struct loop_func_table *lo_encryption;
      __u32 lo_init[2];
      kuid_t lo_key_owner;
      int (*ioctl)(struct loop_device *, int, long unsigned int);
      struct file *lo_backing_file;
      struct file *lo_backing_virt_file;
      struct block_device *lo_device;
      unsigned int lo_blocksize;
      void *key_data;
      gfp_t old_gfp_mask;
      spinlock_t lo_lock;
      int lo_state;
      struct mutex lo_ctl_mutex;
      struct kthread_worker worker;
      struct task_struct *worker_task;
      bool use_dio;
      struct request_queue *lo_queue;
      struct blk_mq_tag_set tag_set;
      struct gendisk *lo_disk;
  };
  

• In 4.8: ✅

  struct loop_device {
      int lo_number;
      atomic_t lo_refcnt;
      loff_t lo_offset;
      loff_t lo_sizelimit;
      int lo_flags;
      int (*transfer)(struct loop_device *, int, struct page *, unsigned int, struct page *, unsigned int, int, sector_t);
      char lo_file_name[64];
      char lo_crypt_name[64];
      char lo_encrypt_key[32];
      int lo_encrypt_key_size;
      struct loop_func_table *lo_encryption;
      __u32 lo_init[2];
      kuid_t lo_key_owner;
      int (*ioctl)(struct loop_device *, int, long unsigned int);
      struct file *lo_backing_file;
      struct file *lo_backing_virt_file;
      struct block_device *lo_device;
      unsigned int lo_blocksize;
      void *key_data;
      gfp_t old_gfp_mask;
      spinlock_t lo_lock;
      int lo_state;
      struct mutex lo_ctl_mutex;
      struct kthread_worker worker;
      struct task_struct *worker_task;
      bool use_dio;
      struct request_queue *lo_queue;
      struct blk_mq_tag_set tag_set;
      struct gendisk *lo_disk;
  };
  

• In 4.10: ✅

  struct loop_device {
      int lo_number;
      atomic_t lo_refcnt;
      loff_t lo_offset;
      loff_t lo_sizelimit;
      int lo_flags;
      int (*transfer)(struct loop_device *, int, struct page *, unsigned int, struct page *, unsigned int, int, sector_t);
      char lo_file_name[64];
      char lo_crypt_name[64];
      char lo_encrypt_key[32];
      int lo_encrypt_key_size;
      struct loop_func_table *lo_encryption;
      __u32 lo_init[2];
      kuid_t lo_key_owner;
      int (*ioctl)(struct loop_device *, int, long unsigned int);
      struct file *lo_backing_file;
      struct block_device *lo_device;
      unsigned int lo_blocksize;
      void *key_data;
      gfp_t old_gfp_mask;
      spinlock_t lo_lock;
      int lo_state;
      struct mutex lo_ctl_mutex;
      struct kthread_worker worker;
      struct task_struct *worker_task;
      bool use_dio;
      struct request_queue *lo_queue;
      struct blk_mq_tag_set tag_set;
      struct gendisk *lo_disk;
  };
  

• In 4.13: ✅

  struct loop_device {
      int lo_number;
      atomic_t lo_refcnt;
      loff_t lo_offset;
      loff_t lo_sizelimit;
      int lo_flags;
      int (*transfer)(struct loop_device *, int, struct page *, unsigned int, struct page *, unsigned int, int, sector_t);
      char lo_file_name[64];
      char lo_crypt_name[64];
      char lo_encrypt_key[32];
      int lo_encrypt_key_size;
      struct loop_func_table *lo_encryption;
      __u32 lo_init[2];
      kuid_t lo_key_owner;
      int (*ioctl)(struct loop_device *, int, long unsigned int);
      struct file *lo_backing_file;
      struct file *lo_backing_virt_file;
      struct block_device *lo_device;
      unsigned int lo_blocksize;
      void *key_data;
      gfp_t old_gfp_mask;
      spinlock_t lo_lock;
      int lo_state;
      struct mutex lo_ctl_mutex;
      struct kthread_worker worker;
      struct task_struct *worker_task;
      bool use_dio;
      struct request_queue *lo_queue;
      struct blk_mq_tag_set tag_set;
      struct gendisk *lo_disk;
  };
  

• In 4.15: ✅

  struct loop_device {
      int lo_number;
      atomic_t lo_refcnt;
      loff_t lo_offset;
      loff_t lo_sizelimit;
      int lo_flags;
      int (*transfer)(struct loop_device *, int, struct page *, unsigned int, struct page *, unsigned int, int, sector_t);
      char lo_file_name[64];
      char lo_crypt_name[64];
      char lo_encrypt_key[32];
      int lo_encrypt_key_size;
      struct loop_func_table *lo_encryption;
      __u32 lo_init[2];
      kuid_t lo_key_owner;
      int (*ioctl)(struct loop_device *, int, long unsigned int);
      struct file *lo_backing_file;
      struct file *lo_backing_virt_file;
      struct block_device *lo_device;
      void *key_data;
      gfp_t old_gfp_mask;
      spinlock_t lo_lock;
      int lo_state;
      struct mutex lo_ctl_mutex;
      struct kthread_worker worker;
      struct task_struct *worker_task;
      bool use_dio;
      struct request_queue *lo_queue;
      struct blk_mq_tag_set tag_set;
      struct gendisk *lo_disk;
  };
  

• In 4.18: ✅

  struct loop_device {
      int lo_number;
      atomic_t lo_refcnt;
      loff_t lo_offset;
      loff_t lo_sizelimit;
      int lo_flags;
      int (*transfer)(struct loop_device *, int, struct page *, unsigned int, struct page *, unsigned int, int, sector_t);
      char lo_file_name[64];
      char lo_crypt_name[64];
      char lo_encrypt_key[32];
      int lo_encrypt_key_size;
      struct loop_func_table *lo_encryption;
      __u32 lo_init[2];
      kuid_t lo_key_owner;
      int (*ioctl)(struct loop_device *, int, long unsigned int);
      struct file *lo_backing_file;
      struct file *lo_backing_virt_file;
      struct block_device *lo_device;
      void *key_data;
      gfp_t old_gfp_mask;
      spinlock_t lo_lock;
      int lo_state;
      struct mutex lo_ctl_mutex;
      struct kthread_worker worker;
      struct task_struct *worker_task;
      bool use_dio;
      bool sysfs_inited;
      struct request_queue *lo_queue;
      struct blk_mq_tag_set tag_set;
      struct gendisk *lo_disk;
  };
  

• In 5.0: ✅

  struct loop_device {
      int lo_number;
      atomic_t lo_refcnt;
      loff_t lo_offset;
      loff_t lo_sizelimit;
      int lo_flags;
      int (*transfer)(struct loop_device *, int, struct page *, unsigned int, struct page *, unsigned int, int, sector_t);
      char lo_file_name[64];
      char lo_crypt_name[64];
      char lo_encrypt_key[32];
      int lo_encrypt_key_size;
      struct loop_func_table *lo_encryption;
      __u32 lo_init[2];
      kuid_t lo_key_owner;
      int (*ioctl)(struct loop_device *, int, long unsigned int);
      struct file *lo_backing_file;
      struct file *lo_backing_virt_file;
      struct block_device *lo_device;
      void *key_data;
      gfp_t old_gfp_mask;
      spinlock_t lo_lock;
      int lo_state;
      struct kthread_worker worker;
      struct task_struct *worker_task;
      bool use_dio;
      bool sysfs_inited;
      struct request_queue *lo_queue;
      struct blk_mq_tag_set tag_set;
      struct gendisk *lo_disk;
  };
  

• In 5.3: ✅

  struct loop_device {
      int lo_number;
      atomic_t lo_refcnt;
      loff_t lo_offset;
      loff_t lo_sizelimit;
      int lo_flags;
      int (*transfer)(struct loop_device *, int, struct page *, unsigned int, struct page *, unsigned int, int, sector_t);
      char lo_file_name[64];
      char lo_crypt_name[64];
      char lo_encrypt_key[32];
      int lo_encrypt_key_size;
      struct loop_func_table *lo_encryption;
      __u32 lo_init[2];
      kuid_t lo_key_owner;
      int (*ioctl)(struct loop_device *, int, long unsigned int);
      struct file *lo_backing_file;
      struct file *lo_backing_virt_file;
      struct block_device *lo_device;
      void *key_data;
      gfp_t old_gfp_mask;
      spinlock_t lo_lock;
      int lo_state;
      struct kthread_worker worker;
      struct task_struct *worker_task;
      bool use_dio;
      bool sysfs_inited;
      struct request_queue *lo_queue;
      struct blk_mq_tag_set tag_set;
      struct gendisk *lo_disk;
  };
  

• In 5.4: ✅

  struct loop_device {
      int lo_number;
      atomic_t lo_refcnt;
      loff_t lo_offset;
      loff_t lo_sizelimit;
      int lo_flags;
      int (*transfer)(struct loop_device *, int, struct page *, unsigned int, struct page *, unsigned int, int, sector_t);
      char lo_file_name[64];
      char lo_crypt_name[64];
      char lo_encrypt_key[32];
      int lo_encrypt_key_size;
      struct loop_func_table *lo_encryption;
      __u32 lo_init[2];
      kuid_t lo_key_owner;
      int (*ioctl)(struct loop_device *, int, long unsigned int);
      struct file *lo_backing_file;
      struct file *lo_backing_virt_file;
      struct block_device *lo_device;
      void *key_data;
      gfp_t old_gfp_mask;
      spinlock_t lo_lock;
      int lo_state;
      struct kthread_worker worker;
      struct task_struct *worker_task;
      bool use_dio;
      bool sysfs_inited;
      struct request_queue *lo_queue;
      struct blk_mq_tag_set tag_set;
      struct gendisk *lo_disk;
  };
  

• In 5.8: ✅

  struct loop_device {
      int lo_number;
      atomic_t lo_refcnt;
      loff_t lo_offset;
      loff_t lo_sizelimit;
      int lo_flags;
      int (*transfer)(struct loop_device *, int, struct page *, unsigned int, struct page *, unsigned int, int, sector_t);
      char lo_file_name[64];
      char lo_crypt_name[64];
      char lo_encrypt_key[32];
      int lo_encrypt_key_size;
      struct loop_func_table *lo_encryption;
      __u32 lo_init[2];
      kuid_t lo_key_owner;
      int (*ioctl)(struct loop_device *, int, long unsigned int);
      struct file *lo_backing_file;
      struct file *lo_backing_virt_file;
      struct block_device *lo_device;
      void *key_data;
      gfp_t old_gfp_mask;
      spinlock_t lo_lock;
      int lo_state;
      struct kthread_worker worker;
      struct task_struct *worker_task;
      bool use_dio;
      bool sysfs_inited;
      struct request_queue *lo_queue;
      struct blk_mq_tag_set tag_set;
      struct gendisk *lo_disk;
  };
  

• In 5.11: ✅

  struct loop_device {
      int lo_number;
      atomic_t lo_refcnt;
      loff_t lo_offset;
      loff_t lo_sizelimit;
      int lo_flags;
      int (*transfer)(struct loop_device *, int, struct page *, unsigned int, struct page *, unsigned int, int, sector_t);
      char lo_file_name[64];
      char lo_crypt_name[64];
      char lo_encrypt_key[32];
      int lo_encrypt_key_size;
      struct loop_func_table *lo_encryption;
      __u32 lo_init[2];
      kuid_t lo_key_owner;
      int (*ioctl)(struct loop_device *, int, long unsigned int);
      struct file *lo_backing_file;
      struct file *lo_backing_virt_file;
      struct block_device *lo_device;
      void *key_data;
      gfp_t old_gfp_mask;
      spinlock_t lo_lock;
      int lo_state;
      struct kthread_worker worker;
      struct task_struct *worker_task;
      bool use_dio;
      bool sysfs_inited;
      struct request_queue *lo_queue;
      struct blk_mq_tag_set tag_set;
      struct gendisk *lo_disk;
  };
  

• In 5.13: ✅

  struct loop_device {
      int lo_number;
      atomic_t lo_refcnt;
      loff_t lo_offset;
      loff_t lo_sizelimit;
      int lo_flags;
      int (*transfer)(struct loop_device *, int, struct page *, unsigned int, struct page *, unsigned int, int, sector_t);
      char lo_file_name[64];
      char lo_crypt_name[64];
      char lo_encrypt_key[32];
      int lo_encrypt_key_size;
      struct loop_func_table *lo_encryption;
      __u32 lo_init[2];
      kuid_t lo_key_owner;
      int (*ioctl)(struct loop_device *, int, long unsigned int);
      struct file *lo_backing_file;
      struct block_device *lo_device;
      void *key_data;
      gfp_t old_gfp_mask;
      spinlock_t lo_lock;
      int lo_state;
      struct kthread_worker worker;
      struct task_struct *worker_task;
      bool use_dio;
      bool sysfs_inited;
      struct request_queue *lo_queue;
      struct blk_mq_tag_set tag_set;
      struct gendisk *lo_disk;
      struct mutex lo_mutex;
  };
  

• In 5.15: ✅

  struct loop_device {
      int lo_number;
      atomic_t lo_refcnt;
      loff_t lo_offset;
      loff_t lo_sizelimit;
      int lo_flags;
      int (*transfer)(struct loop_device *, int, struct page *, unsigned int, struct page *, unsigned int, int, sector_t);
      char lo_file_name[64];
      char lo_crypt_name[64];
      char lo_encrypt_key[32];
      int lo_encrypt_key_size;
      struct loop_func_table *lo_encryption;
      __u32 lo_init[2];
      kuid_t lo_key_owner;
      int (*ioctl)(struct loop_device *, int, long unsigned int);
      struct file *lo_backing_file;
      struct file *lo_backing_virt_file;
      struct block_device *lo_device;
      void *key_data;
      gfp_t old_gfp_mask;
      spinlock_t lo_lock;
      int lo_state;
      spinlock_t lo_work_lock;
      struct workqueue_struct *workqueue;
      struct work_struct rootcg_work;
      struct list_head rootcg_cmd_list;
      struct list_head idle_worker_list;
      struct rb_root worker_tree;
      struct timer_list timer;
      bool use_dio;
      bool sysfs_inited;
      struct request_queue *lo_queue;
      struct blk_mq_tag_set tag_set;
      struct gendisk *lo_disk;
      struct mutex lo_mutex;
      bool idr_visible;
  };
  

• In 5.19: ✅

  struct loop_device {
      int lo_number;
      loff_t lo_offset;
      loff_t lo_sizelimit;
      int lo_flags;
      char lo_file_name[64];
      struct file *lo_backing_file;
      struct block_device *lo_device;
      gfp_t old_gfp_mask;
      spinlock_t lo_lock;
      int lo_state;
      spinlock_t lo_work_lock;
      struct workqueue_struct *workqueue;
      struct work_struct rootcg_work;
      struct list_head rootcg_cmd_list;
      struct list_head idle_worker_list;
      struct rb_root worker_tree;
      struct timer_list timer;
      bool use_dio;
      bool sysfs_inited;
      struct request_queue *lo_queue;
      struct blk_mq_tag_set tag_set;
      struct gendisk *lo_disk;
      struct mutex lo_mutex;
      bool idr_visible;
  };
  

• In 6.2: ✅

  struct loop_device {
      int lo_number;
      loff_t lo_offset;
      loff_t lo_sizelimit;
      int lo_flags;
      char lo_file_name[64];
      struct file *lo_backing_file;
      struct block_device *lo_device;
      gfp_t old_gfp_mask;
      spinlock_t lo_lock;
      int lo_state;
      spinlock_t lo_work_lock;
      struct workqueue_struct *workqueue;
      struct work_struct rootcg_work;
      struct list_head rootcg_cmd_list;
      struct list_head idle_worker_list;
      struct rb_root worker_tree;
      struct timer_list timer;
      bool use_dio;
      bool sysfs_inited;
      struct request_queue *lo_queue;
      struct blk_mq_tag_set tag_set;
      struct gendisk *lo_disk;
      struct mutex lo_mutex;
      bool idr_visible;
  };
  

• In 6.5: ✅

  struct loop_device {
      int lo_number;
      loff_t lo_offset;
      loff_t lo_sizelimit;
      int lo_flags;
      char lo_file_name[64];
      struct file *lo_backing_file;
      struct block_device *lo_device;
      gfp_t old_gfp_mask;
      spinlock_t lo_lock;
      int lo_state;
      spinlock_t lo_work_lock;
      struct workqueue_struct *workqueue;
      struct work_struct rootcg_work;
      struct list_head rootcg_cmd_list;
      struct list_head idle_worker_list;
      struct rb_root worker_tree;
      struct timer_list timer;
      bool use_dio;
      bool sysfs_inited;
      struct request_queue *lo_queue;
      struct blk_mq_tag_set tag_set;
      struct gendisk *lo_disk;
      struct mutex lo_mutex;
      bool idr_visible;
  };
  

• In 6.8: ✅

  struct loop_device {
      int lo_number;
      loff_t lo_offset;
      loff_t lo_sizelimit;
      int lo_flags;
      char lo_file_name[64];
      struct file *lo_backing_file;
      struct block_device *lo_device;
      gfp_t old_gfp_mask;
      spinlock_t lo_lock;
      int lo_state;
      spinlock_t lo_work_lock;
      struct workqueue_struct *workqueue;
      struct work_struct rootcg_work;
      struct list_head rootcg_cmd_list;
      struct list_head idle_worker_list;
      struct rb_root worker_tree;
      struct timer_list timer;
      bool use_dio;
      bool sysfs_inited;
      struct request_queue *lo_queue;
      struct blk_mq_tag_set tag_set;
      struct gendisk *lo_disk;
      struct mutex lo_mutex;
      bool idr_visible;
  };
  

Arch

• In arm64: ✅

  struct loop_device {
      int lo_number;
      atomic_t lo_refcnt;
      loff_t lo_offset;
      loff_t lo_sizelimit;
      int lo_flags;
      int (*transfer)(struct loop_device *, int, struct page *, unsigned int, struct page *, unsigned int, int, sector_t);
      char lo_file_name[64];
      char lo_crypt_name[64];
      char lo_encrypt_key[32];
      int lo_encrypt_key_size;
      struct loop_func_table *lo_encryption;
      __u32 lo_init[2];
      kuid_t lo_key_owner;
      int (*ioctl)(struct loop_device *, int, long unsigned int);
      struct file *lo_backing_file;
      struct file *lo_backing_virt_file;
      struct block_device *lo_device;
      void *key_data;
      gfp_t old_gfp_mask;
      spinlock_t lo_lock;
      int lo_state;
      struct kthread_worker worker;
      struct task_struct *worker_task;
      bool use_dio;
      bool sysfs_inited;
      struct request_queue *lo_queue;
      struct blk_mq_tag_set tag_set;
      struct gendisk *lo_disk;
  };
  

• In armhf: ✅

  struct loop_device {
      int lo_number;
      atomic_t lo_refcnt;
      loff_t lo_offset;
      loff_t lo_sizelimit;
      int lo_flags;
      int (*transfer)(struct loop_device *, int, struct page *, unsigned int, struct page *, unsigned int, int, sector_t);
      char lo_file_name[64];
      char lo_crypt_name[64];
      char lo_encrypt_key[32];
      int lo_encrypt_key_size;
      struct loop_func_table *lo_encryption;
      __u32 lo_init[2];
      kuid_t lo_key_owner;
      int (*ioctl)(struct loop_device *, int, long unsigned int);
      struct file *lo_backing_file;
      struct file *lo_backing_virt_file;
      struct block_device *lo_device;
      void *key_data;
      gfp_t old_gfp_mask;
      spinlock_t lo_lock;
      int lo_state;
      struct kthread_worker worker;
      struct task_struct *worker_task;
      bool use_dio;
      bool sysfs_inited;
      struct request_queue *lo_queue;
      struct blk_mq_tag_set tag_set;
      struct gendisk *lo_disk;
  };
  

• In ppc64el: ✅

  struct loop_device {
      int lo_number;
      atomic_t lo_refcnt;
      loff_t lo_offset;
      loff_t lo_sizelimit;
      int lo_flags;
      int (*transfer)(struct loop_device *, int, struct page *, unsigned int, struct page *, unsigned int, int, sector_t);
      char lo_file_name[64];
      char lo_crypt_name[64];
      char lo_encrypt_key[32];
      int lo_encrypt_key_size;
      struct loop_func_table *lo_encryption;
      __u32 lo_init[2];
      kuid_t lo_key_owner;
      int (*ioctl)(struct loop_device *, int, long unsigned int);
      struct file *lo_backing_file;
      struct file *lo_backing_virt_file;
      struct block_device *lo_device;
      void *key_data;
      gfp_t old_gfp_mask;
      spinlock_t lo_lock;
      int lo_state;
      struct kthread_worker worker;
      struct task_struct *worker_task;
      bool use_dio;
      bool sysfs_inited;
      struct request_queue *lo_queue;
      struct blk_mq_tag_set tag_set;
      struct gendisk *lo_disk;
  };
  

• In riscv64: ✅

  struct loop_device {
      int lo_number;
      atomic_t lo_refcnt;
      loff_t lo_offset;
      loff_t lo_sizelimit;
      int lo_flags;
      int (*transfer)(struct loop_device *, int, struct page *, unsigned int, struct page *, unsigned int, int, sector_t);
      char lo_file_name[64];
      char lo_crypt_name[64];
      char lo_encrypt_key[32];
      int lo_encrypt_key_size;
      struct loop_func_table *lo_encryption;
      __u32 lo_init[2];
      kuid_t lo_key_owner;
      int (*ioctl)(struct loop_device *, int, long unsigned int);
      struct file *lo_backing_file;
      struct file *lo_backing_virt_file;
      struct block_device *lo_device;
      void *key_data;
      gfp_t old_gfp_mask;
      spinlock_t lo_lock;
      int lo_state;
      struct kthread_worker worker;
      struct task_struct *worker_task;
      bool use_dio;
      bool sysfs_inited;
      struct request_queue *lo_queue;
      struct blk_mq_tag_set tag_set;
      struct gendisk *lo_disk;
  };
  

Flavor

• In aws: ✅

  struct loop_device {
      int lo_number;
      atomic_t lo_refcnt;
      loff_t lo_offset;
      loff_t lo_sizelimit;
      int lo_flags;
      int (*transfer)(struct loop_device *, int, struct page *, unsigned int, struct page *, unsigned int, int, sector_t);
      char lo_file_name[64];
      char lo_crypt_name[64];
      char lo_encrypt_key[32];
      int lo_encrypt_key_size;
      struct loop_func_table *lo_encryption;
      __u32 lo_init[2];
      kuid_t lo_key_owner;
      int (*ioctl)(struct loop_device *, int, long unsigned int);
      struct file *lo_backing_file;
      struct file *lo_backing_virt_file;
      struct block_device *lo_device;
      void *key_data;
      gfp_t old_gfp_mask;
      spinlock_t lo_lock;
      int lo_state;
      struct kthread_worker worker;
      struct task_struct *worker_task;
      bool use_dio;
      bool sysfs_inited;
      struct request_queue *lo_queue;
      struct blk_mq_tag_set tag_set;
      struct gendisk *lo_disk;
  };
  

• In azure: ✅

  struct loop_device {
      int lo_number;
      atomic_t lo_refcnt;
      loff_t lo_offset;
      loff_t lo_sizelimit;
      int lo_flags;
      int (*transfer)(struct loop_device *, int, struct page *, unsigned int, struct page *, unsigned int, int, sector_t);
      char lo_file_name[64];
      char lo_crypt_name[64];
      char lo_encrypt_key[32];
      int lo_encrypt_key_size;
      struct loop_func_table *lo_encryption;
      __u32 lo_init[2];
      kuid_t lo_key_owner;
      int (*ioctl)(struct loop_device *, int, long unsigned int);
      struct file *lo_backing_file;
      struct file *lo_backing_virt_file;
      struct block_device *lo_device;
      void *key_data;
      gfp_t old_gfp_mask;
      spinlock_t lo_lock;
      int lo_state;
      struct kthread_worker worker;
      struct task_struct *worker_task;
      bool use_dio;
      bool sysfs_inited;
      struct request_queue *lo_queue;
      struct blk_mq_tag_set tag_set;
      struct gendisk *lo_disk;
  };
  

• In gcp: ✅

  struct loop_device {
      int lo_number;
      atomic_t lo_refcnt;
      loff_t lo_offset;
      loff_t lo_sizelimit;
      int lo_flags;
      int (*transfer)(struct loop_device *, int, struct page *, unsigned int, struct page *, unsigned int, int, sector_t);
      char lo_file_name[64];
      char lo_crypt_name[64];
      char lo_encrypt_key[32];
      int lo_encrypt_key_size;
      struct loop_func_table *lo_encryption;
      __u32 lo_init[2];
      kuid_t lo_key_owner;
      int (*ioctl)(struct loop_device *, int, long unsigned int);
      struct file *lo_backing_file;
      struct file *lo_backing_virt_file;
      struct block_device *lo_device;
      void *key_data;
      gfp_t old_gfp_mask;
      spinlock_t lo_lock;
      int lo_state;
      struct kthread_worker worker;
      struct task_struct *worker_task;
      bool use_dio;
      bool sysfs_inited;
      struct request_queue *lo_queue;
      struct blk_mq_tag_set tag_set;
      struct gendisk *lo_disk;
  };
  

• In lowlatency: ✅

  struct loop_device {
      int lo_number;
      atomic_t lo_refcnt;
      loff_t lo_offset;
      loff_t lo_sizelimit;
      int lo_flags;
      int (*transfer)(struct loop_device *, int, struct page *, unsigned int, struct page *, unsigned int, int, sector_t);
      char lo_file_name[64];
      char lo_crypt_name[64];
      char lo_encrypt_key[32];
      int lo_encrypt_key_size;
      struct loop_func_table *lo_encryption;
      __u32 lo_init[2];
      kuid_t lo_key_owner;
      int (*ioctl)(struct loop_device *, int, long unsigned int);
      struct file *lo_backing_file;
      struct file *lo_backing_virt_file;
      struct block_device *lo_device;
      void *key_data;
      gfp_t old_gfp_mask;
      spinlock_t lo_lock;
      int lo_state;
      struct kthread_worker worker;
      struct task_struct *worker_task;
      bool use_dio;
      bool sysfs_inited;
      struct request_queue *lo_queue;
      struct blk_mq_tag_set tag_set;
      struct gendisk *lo_disk;
  };
  

Differences

Regular

• No changes between 4.4 and 4.8 ✅
• Changed between 4.8 and 4.10 ⚠️

  • Field removed. struct file *lo_backing_virt_file
• Changed between 4.10 and 4.13 ⚠️

  • Field added. struct file *lo_backing_virt_file
• Changed between 4.13 and 4.15 ⚠️

  • Field removed. unsigned int lo_blocksize
• Changed between 4.15 and 4.18 ⚠️

  • Field added. bool sysfs_inited
• Changed between 4.18 and 5.0 ⚠️

  • Field removed. struct mutex lo_ctl_mutex
• No changes between 5.0 and 5.3 ✅
• No changes between 5.3 and 5.4 ✅
• No changes between 5.4 and 5.8 ✅
• No changes between 5.8 and 5.11 ✅
• Changed between 5.11 and 5.13 ⚠️

  • Field added. struct mutex lo_mutex
  • Field removed. struct file *lo_backing_virt_file
• Changed between 5.13 and 5.15 ⚠️

  • Field added. struct file *lo_backing_virt_file
  • Field added. spinlock_t lo_work_lock
  • Field added. struct workqueue_struct *workqueue
  • Field added. struct work_struct rootcg_work
  • Field added. struct list_head rootcg_cmd_list
  • Field added. struct list_head idle_worker_list
  • Field added. struct rb_root worker_tree
  • Field added. struct timer_list timer
  • Field added. bool idr_visible
  • Field removed. struct kthread_worker worker
  • Field removed. struct task_struct *worker_task
• Changed between 5.15 and 5.19 ⚠️

  • Field removed. atomic_t lo_refcnt
  • Field removed. int (*transfer)(struct loop_device *, int, struct page *, unsigned int, struct page *, unsigned int, int, sector_t)
  • Field removed. char lo_crypt_name[64]
  • Field removed. char lo_encrypt_key[32]
  • Field removed. int lo_encrypt_key_size
  • Field removed. struct loop_func_table *lo_encryption
  • Field removed. __u32 lo_init[2]
  • Field removed. kuid_t lo_key_owner
  • Field removed. int (*ioctl)(struct loop_device *, int, long unsigned int)
  • Field removed. struct file *lo_backing_virt_file
  • Field removed. void *key_data
• No changes between 5.19 and 6.2 ✅
• No changes between 6.2 and 6.5 ✅
• No changes between 6.5 and 6.8 ✅

Arch

• No changes between amd64 and arm64 ✅
• No changes between amd64 and armhf ✅
• No changes between amd64 and ppc64el ✅
• No changes between amd64 and riscv64 ✅

Flavor

• No changes between generic and aws ✅
• No changes between generic and azure ✅
• No changes between generic and gcp ✅
• No changes between generic and lowlatency ✅