website-struct

Struct: blk_mq_ops

Status

Regular

• In 4.4: ✅

  struct blk_mq_ops {
      queue_rq_fn *queue_rq;
      map_queue_fn *map_queue;
      timeout_fn *timeout;
      poll_fn *poll;
      softirq_done_fn *complete;
      init_hctx_fn *init_hctx;
      exit_hctx_fn *exit_hctx;
      init_request_fn *init_request;
      exit_request_fn *exit_request;
  };
  

• In 4.8: ✅

  struct blk_mq_ops {
      queue_rq_fn *queue_rq;
      map_queue_fn *map_queue;
      timeout_fn *timeout;
      poll_fn *poll;
      softirq_done_fn *complete;
      init_hctx_fn *init_hctx;
      exit_hctx_fn *exit_hctx;
      init_request_fn *init_request;
      exit_request_fn *exit_request;
      reinit_request_fn *reinit_request;
  };
  

• In 4.10: ✅

  struct blk_mq_ops {
      queue_rq_fn *queue_rq;
      timeout_fn *timeout;
      poll_fn *poll;
      softirq_done_fn *complete;
      init_hctx_fn *init_hctx;
      exit_hctx_fn *exit_hctx;
      init_request_fn *init_request;
      exit_request_fn *exit_request;
      reinit_request_fn *reinit_request;
      map_queues_fn *map_queues;
  };
  

• In 4.13: ✅

  struct blk_mq_ops {
      queue_rq_fn *queue_rq;
      timeout_fn *timeout;
      poll_fn *poll;
      softirq_done_fn *complete;
      init_hctx_fn *init_hctx;
      exit_hctx_fn *exit_hctx;
      init_request_fn *init_request;
      exit_request_fn *exit_request;
      reinit_request_fn *reinit_request;
      void (*initialize_rq_fn)(struct request *);
      map_queues_fn *map_queues;
      void (*show_rq)(struct seq_file *, struct request *);
  };
  

• In 4.15: ✅

  struct blk_mq_ops {
      queue_rq_fn *queue_rq;
      get_budget_fn *get_budget;
      put_budget_fn *put_budget;
      timeout_fn *timeout;
      poll_fn *poll;
      softirq_done_fn *complete;
      init_hctx_fn *init_hctx;
      exit_hctx_fn *exit_hctx;
      init_request_fn *init_request;
      exit_request_fn *exit_request;
      void (*initialize_rq_fn)(struct request *);
      map_queues_fn *map_queues;
      void (*show_rq)(struct seq_file *, struct request *);
  };
  

• In 4.18: ✅

  struct blk_mq_ops {
      queue_rq_fn *queue_rq;
      get_budget_fn *get_budget;
      put_budget_fn *put_budget;
      timeout_fn *timeout;
      poll_fn *poll;
      softirq_done_fn *complete;
      init_hctx_fn *init_hctx;
      exit_hctx_fn *exit_hctx;
      init_request_fn *init_request;
      exit_request_fn *exit_request;
      void (*initialize_rq_fn)(struct request *);
      map_queues_fn *map_queues;
      void (*show_rq)(struct seq_file *, struct request *);
  };
  

• In 5.0: ✅

  struct blk_mq_ops {
      queue_rq_fn *queue_rq;
      commit_rqs_fn *commit_rqs;
      get_budget_fn *get_budget;
      put_budget_fn *put_budget;
      timeout_fn *timeout;
      poll_fn *poll;
      complete_fn *complete;
      init_hctx_fn *init_hctx;
      exit_hctx_fn *exit_hctx;
      init_request_fn *init_request;
      exit_request_fn *exit_request;
      void (*initialize_rq_fn)(struct request *);
      busy_fn *busy;
      map_queues_fn *map_queues;
      void (*show_rq)(struct seq_file *, struct request *);
  };
  

• In 5.3: ✅

  struct blk_mq_ops {
      queue_rq_fn *queue_rq;
      commit_rqs_fn *commit_rqs;
      get_budget_fn *get_budget;
      put_budget_fn *put_budget;
      timeout_fn *timeout;
      poll_fn *poll;
      complete_fn *complete;
      init_hctx_fn *init_hctx;
      exit_hctx_fn *exit_hctx;
      init_request_fn *init_request;
      exit_request_fn *exit_request;
      void (*initialize_rq_fn)(struct request *);
      busy_fn *busy;
      map_queues_fn *map_queues;
      void (*show_rq)(struct seq_file *, struct request *);
  };
  

• In 5.4: ✅

  struct blk_mq_ops {
      queue_rq_fn *queue_rq;
      commit_rqs_fn *commit_rqs;
      get_budget_fn *get_budget;
      put_budget_fn *put_budget;
      timeout_fn *timeout;
      poll_fn *poll;
      complete_fn *complete;
      init_hctx_fn *init_hctx;
      exit_hctx_fn *exit_hctx;
      init_request_fn *init_request;
      exit_request_fn *exit_request;
      void (*initialize_rq_fn)(struct request *);
      cleanup_rq_fn *cleanup_rq;
      busy_fn *busy;
      map_queues_fn *map_queues;
      void (*show_rq)(struct seq_file *, struct request *);
  };
  

• In 5.8: ✅

  struct blk_mq_ops {
      queue_rq_fn *queue_rq;
      commit_rqs_fn *commit_rqs;
      get_budget_fn *get_budget;
      put_budget_fn *put_budget;
      timeout_fn *timeout;
      poll_fn *poll;
      complete_fn *complete;
      init_hctx_fn *init_hctx;
      exit_hctx_fn *exit_hctx;
      init_request_fn *init_request;
      exit_request_fn *exit_request;
      void (*initialize_rq_fn)(struct request *);
      cleanup_rq_fn *cleanup_rq;
      busy_fn *busy;
      map_queues_fn *map_queues;
      void (*show_rq)(struct seq_file *, struct request *);
  };
  

• In 5.11: ✅

  struct blk_mq_ops {
      blk_status_t (*queue_rq)(struct blk_mq_hw_ctx *, const struct blk_mq_queue_data *);
      void (*commit_rqs)(struct blk_mq_hw_ctx *);
      bool (*get_budget)(struct request_queue *);
      void (*put_budget)(struct request_queue *);
      enum blk_eh_timer_return (*timeout)(struct request *, bool);
      int (*poll)(struct blk_mq_hw_ctx *);
      void (*complete)(struct request *);
      int (*init_hctx)(struct blk_mq_hw_ctx *, void *, unsigned int);
      void (*exit_hctx)(struct blk_mq_hw_ctx *, unsigned int);
      int (*init_request)(struct blk_mq_tag_set *, struct request *, unsigned int, unsigned int);
      void (*exit_request)(struct blk_mq_tag_set *, struct request *, unsigned int);
      void (*initialize_rq_fn)(struct request *);
      void (*cleanup_rq)(struct request *);
      bool (*busy)(struct request_queue *);
      int (*map_queues)(struct blk_mq_tag_set *);
      void (*show_rq)(struct seq_file *, struct request *);
  };
  

• In 5.13: ✅

  struct blk_mq_ops {
      blk_status_t (*queue_rq)(struct blk_mq_hw_ctx *, const struct blk_mq_queue_data *);
      void (*commit_rqs)(struct blk_mq_hw_ctx *);
      int (*get_budget)(struct request_queue *);
      void (*put_budget)(struct request_queue *, int);
      void (*set_rq_budget_token)(struct request *, int);
      int (*get_rq_budget_token)(struct request *);
      enum blk_eh_timer_return (*timeout)(struct request *, bool);
      int (*poll)(struct blk_mq_hw_ctx *);
      void (*complete)(struct request *);
      int (*init_hctx)(struct blk_mq_hw_ctx *, void *, unsigned int);
      void (*exit_hctx)(struct blk_mq_hw_ctx *, unsigned int);
      int (*init_request)(struct blk_mq_tag_set *, struct request *, unsigned int, unsigned int);
      void (*exit_request)(struct blk_mq_tag_set *, struct request *, unsigned int);
      void (*initialize_rq_fn)(struct request *);
      void (*cleanup_rq)(struct request *);
      bool (*busy)(struct request_queue *);
      int (*map_queues)(struct blk_mq_tag_set *);
      void (*show_rq)(struct seq_file *, struct request *);
  };
  

• In 5.15: ✅

  struct blk_mq_ops {
      blk_status_t (*queue_rq)(struct blk_mq_hw_ctx *, const struct blk_mq_queue_data *);
      void (*commit_rqs)(struct blk_mq_hw_ctx *);
      int (*get_budget)(struct request_queue *);
      void (*put_budget)(struct request_queue *, int);
      void (*set_rq_budget_token)(struct request *, int);
      int (*get_rq_budget_token)(struct request *);
      enum blk_eh_timer_return (*timeout)(struct request *, bool);
      int (*poll)(struct blk_mq_hw_ctx *);
      void (*complete)(struct request *);
      int (*init_hctx)(struct blk_mq_hw_ctx *, void *, unsigned int);
      void (*exit_hctx)(struct blk_mq_hw_ctx *, unsigned int);
      int (*init_request)(struct blk_mq_tag_set *, struct request *, unsigned int, unsigned int);
      void (*exit_request)(struct blk_mq_tag_set *, struct request *, unsigned int);
      void (*initialize_rq_fn)(struct request *);
      void (*cleanup_rq)(struct request *);
      bool (*busy)(struct request_queue *);
      int (*map_queues)(struct blk_mq_tag_set *);
      void (*show_rq)(struct seq_file *, struct request *);
  };
  

• In 5.19: ✅

  struct blk_mq_ops {
      blk_status_t (*queue_rq)(struct blk_mq_hw_ctx *, const struct blk_mq_queue_data *);
      void (*commit_rqs)(struct blk_mq_hw_ctx *);
      void (*queue_rqs)(struct request **);
      int (*get_budget)(struct request_queue *);
      void (*put_budget)(struct request_queue *, int);
      void (*set_rq_budget_token)(struct request *, int);
      int (*get_rq_budget_token)(struct request *);
      enum blk_eh_timer_return (*timeout)(struct request *, bool);
      int (*poll)(struct blk_mq_hw_ctx *, struct io_comp_batch *);
      void (*complete)(struct request *);
      int (*init_hctx)(struct blk_mq_hw_ctx *, void *, unsigned int);
      void (*exit_hctx)(struct blk_mq_hw_ctx *, unsigned int);
      int (*init_request)(struct blk_mq_tag_set *, struct request *, unsigned int, unsigned int);
      void (*exit_request)(struct blk_mq_tag_set *, struct request *, unsigned int);
      void (*cleanup_rq)(struct request *);
      bool (*busy)(struct request_queue *);
      int (*map_queues)(struct blk_mq_tag_set *);
      void (*show_rq)(struct seq_file *, struct request *);
  };
  

• In 6.2: ✅

  struct blk_mq_ops {
      blk_status_t (*queue_rq)(struct blk_mq_hw_ctx *, const struct blk_mq_queue_data *);
      void (*commit_rqs)(struct blk_mq_hw_ctx *);
      void (*queue_rqs)(struct request **);
      int (*get_budget)(struct request_queue *);
      void (*put_budget)(struct request_queue *, int);
      void (*set_rq_budget_token)(struct request *, int);
      int (*get_rq_budget_token)(struct request *);
      enum blk_eh_timer_return (*timeout)(struct request *);
      int (*poll)(struct blk_mq_hw_ctx *, struct io_comp_batch *);
      void (*complete)(struct request *);
      int (*init_hctx)(struct blk_mq_hw_ctx *, void *, unsigned int);
      void (*exit_hctx)(struct blk_mq_hw_ctx *, unsigned int);
      int (*init_request)(struct blk_mq_tag_set *, struct request *, unsigned int, unsigned int);
      void (*exit_request)(struct blk_mq_tag_set *, struct request *, unsigned int);
      void (*cleanup_rq)(struct request *);
      bool (*busy)(struct request_queue *);
      void (*map_queues)(struct blk_mq_tag_set *);
      void (*show_rq)(struct seq_file *, struct request *);
  };
  

• In 6.5: ✅

  struct blk_mq_ops {
      blk_status_t (*queue_rq)(struct blk_mq_hw_ctx *, const struct blk_mq_queue_data *);
      void (*commit_rqs)(struct blk_mq_hw_ctx *);
      void (*queue_rqs)(struct request **);
      int (*get_budget)(struct request_queue *);
      void (*put_budget)(struct request_queue *, int);
      void (*set_rq_budget_token)(struct request *, int);
      int (*get_rq_budget_token)(struct request *);
      enum blk_eh_timer_return (*timeout)(struct request *);
      int (*poll)(struct blk_mq_hw_ctx *, struct io_comp_batch *);
      void (*complete)(struct request *);
      int (*init_hctx)(struct blk_mq_hw_ctx *, void *, unsigned int);
      void (*exit_hctx)(struct blk_mq_hw_ctx *, unsigned int);
      int (*init_request)(struct blk_mq_tag_set *, struct request *, unsigned int, unsigned int);
      void (*exit_request)(struct blk_mq_tag_set *, struct request *, unsigned int);
      void (*cleanup_rq)(struct request *);
      bool (*busy)(struct request_queue *);
      void (*map_queues)(struct blk_mq_tag_set *);
      void (*show_rq)(struct seq_file *, struct request *);
  };
  

• In 6.8: ✅

  struct blk_mq_ops {
      blk_status_t (*queue_rq)(struct blk_mq_hw_ctx *, const struct blk_mq_queue_data *);
      void (*commit_rqs)(struct blk_mq_hw_ctx *);
      void (*queue_rqs)(struct request **);
      int (*get_budget)(struct request_queue *);
      void (*put_budget)(struct request_queue *, int);
      void (*set_rq_budget_token)(struct request *, int);
      int (*get_rq_budget_token)(struct request *);
      enum blk_eh_timer_return (*timeout)(struct request *);
      int (*poll)(struct blk_mq_hw_ctx *, struct io_comp_batch *);
      void (*complete)(struct request *);
      int (*init_hctx)(struct blk_mq_hw_ctx *, void *, unsigned int);
      void (*exit_hctx)(struct blk_mq_hw_ctx *, unsigned int);
      int (*init_request)(struct blk_mq_tag_set *, struct request *, unsigned int, unsigned int);
      void (*exit_request)(struct blk_mq_tag_set *, struct request *, unsigned int);
      void (*cleanup_rq)(struct request *);
      bool (*busy)(struct request_queue *);
      void (*map_queues)(struct blk_mq_tag_set *);
      void (*show_rq)(struct seq_file *, struct request *);
  };
  

Arch

• In arm64: ✅

  struct blk_mq_ops {
      queue_rq_fn *queue_rq;
      commit_rqs_fn *commit_rqs;
      get_budget_fn *get_budget;
      put_budget_fn *put_budget;
      timeout_fn *timeout;
      poll_fn *poll;
      complete_fn *complete;
      init_hctx_fn *init_hctx;
      exit_hctx_fn *exit_hctx;
      init_request_fn *init_request;
      exit_request_fn *exit_request;
      void (*initialize_rq_fn)(struct request *);
      cleanup_rq_fn *cleanup_rq;
      busy_fn *busy;
      map_queues_fn *map_queues;
      void (*show_rq)(struct seq_file *, struct request *);
  };
  

• In armhf: ✅

  struct blk_mq_ops {
      queue_rq_fn *queue_rq;
      commit_rqs_fn *commit_rqs;
      get_budget_fn *get_budget;
      put_budget_fn *put_budget;
      timeout_fn *timeout;
      poll_fn *poll;
      complete_fn *complete;
      init_hctx_fn *init_hctx;
      exit_hctx_fn *exit_hctx;
      init_request_fn *init_request;
      exit_request_fn *exit_request;
      void (*initialize_rq_fn)(struct request *);
      cleanup_rq_fn *cleanup_rq;
      busy_fn *busy;
      map_queues_fn *map_queues;
      void (*show_rq)(struct seq_file *, struct request *);
  };
  

• In ppc64el: ✅

  struct blk_mq_ops {
      queue_rq_fn *queue_rq;
      commit_rqs_fn *commit_rqs;
      get_budget_fn *get_budget;
      put_budget_fn *put_budget;
      timeout_fn *timeout;
      poll_fn *poll;
      complete_fn *complete;
      init_hctx_fn *init_hctx;
      exit_hctx_fn *exit_hctx;
      init_request_fn *init_request;
      exit_request_fn *exit_request;
      void (*initialize_rq_fn)(struct request *);
      cleanup_rq_fn *cleanup_rq;
      busy_fn *busy;
      map_queues_fn *map_queues;
      void (*show_rq)(struct seq_file *, struct request *);
  };
  

• In riscv64: ✅

  struct blk_mq_ops {
      queue_rq_fn *queue_rq;
      commit_rqs_fn *commit_rqs;
      get_budget_fn *get_budget;
      put_budget_fn *put_budget;
      timeout_fn *timeout;
      poll_fn *poll;
      complete_fn *complete;
      init_hctx_fn *init_hctx;
      exit_hctx_fn *exit_hctx;
      init_request_fn *init_request;
      exit_request_fn *exit_request;
      void (*initialize_rq_fn)(struct request *);
      cleanup_rq_fn *cleanup_rq;
      busy_fn *busy;
      map_queues_fn *map_queues;
      void (*show_rq)(struct seq_file *, struct request *);
  };
  

Flavor

• In aws: ✅

  struct blk_mq_ops {
      queue_rq_fn *queue_rq;
      commit_rqs_fn *commit_rqs;
      get_budget_fn *get_budget;
      put_budget_fn *put_budget;
      timeout_fn *timeout;
      poll_fn *poll;
      complete_fn *complete;
      init_hctx_fn *init_hctx;
      exit_hctx_fn *exit_hctx;
      init_request_fn *init_request;
      exit_request_fn *exit_request;
      void (*initialize_rq_fn)(struct request *);
      cleanup_rq_fn *cleanup_rq;
      busy_fn *busy;
      map_queues_fn *map_queues;
      void (*show_rq)(struct seq_file *, struct request *);
  };
  

• In azure: ✅

  struct blk_mq_ops {
      queue_rq_fn *queue_rq;
      commit_rqs_fn *commit_rqs;
      get_budget_fn *get_budget;
      put_budget_fn *put_budget;
      timeout_fn *timeout;
      poll_fn *poll;
      complete_fn *complete;
      init_hctx_fn *init_hctx;
      exit_hctx_fn *exit_hctx;
      init_request_fn *init_request;
      exit_request_fn *exit_request;
      void (*initialize_rq_fn)(struct request *);
      cleanup_rq_fn *cleanup_rq;
      busy_fn *busy;
      map_queues_fn *map_queues;
      void (*show_rq)(struct seq_file *, struct request *);
  };
  

• In gcp: ✅

  struct blk_mq_ops {
      queue_rq_fn *queue_rq;
      commit_rqs_fn *commit_rqs;
      get_budget_fn *get_budget;
      put_budget_fn *put_budget;
      timeout_fn *timeout;
      poll_fn *poll;
      complete_fn *complete;
      init_hctx_fn *init_hctx;
      exit_hctx_fn *exit_hctx;
      init_request_fn *init_request;
      exit_request_fn *exit_request;
      void (*initialize_rq_fn)(struct request *);
      cleanup_rq_fn *cleanup_rq;
      busy_fn *busy;
      map_queues_fn *map_queues;
      void (*show_rq)(struct seq_file *, struct request *);
  };
  

• In lowlatency: ✅

  struct blk_mq_ops {
      queue_rq_fn *queue_rq;
      commit_rqs_fn *commit_rqs;
      get_budget_fn *get_budget;
      put_budget_fn *put_budget;
      timeout_fn *timeout;
      poll_fn *poll;
      complete_fn *complete;
      init_hctx_fn *init_hctx;
      exit_hctx_fn *exit_hctx;
      init_request_fn *init_request;
      exit_request_fn *exit_request;
      void (*initialize_rq_fn)(struct request *);
      cleanup_rq_fn *cleanup_rq;
      busy_fn *busy;
      map_queues_fn *map_queues;
      void (*show_rq)(struct seq_file *, struct request *);
  };
  

Differences

Regular

• Changed between 4.4 and 4.8 ⚠️

  • Field added. reinit_request_fn *reinit_request
• Changed between 4.8 and 4.10 ⚠️

  • Field added. map_queues_fn *map_queues
  • Field removed. map_queue_fn *map_queue
• Changed between 4.10 and 4.13 ⚠️

  • Field added. void (*initialize_rq_fn)(struct request *)
  • Field added. void (*show_rq)(struct seq_file *, struct request *)
• Changed between 4.13 and 4.15 ⚠️

  • Field added. get_budget_fn *get_budget
  • Field added. put_budget_fn *put_budget
  • Field removed. reinit_request_fn *reinit_request
• No changes between 4.15 and 4.18 ✅
• Changed between 4.18 and 5.0 ⚠️

  • Field added. commit_rqs_fn *commit_rqs
  • Field added. busy_fn *busy
  • Field type changed. softirq_done_fn *complete ➡️ complete_fn *complete
• No changes between 5.0 and 5.3 ✅
• Changed between 5.3 and 5.4 ⚠️

  • Field added. cleanup_rq_fn *cleanup_rq
• No changes between 5.4 and 5.8 ✅
• Changed between 5.8 and 5.11 ⚠️

  • Field type changed. queue_rq_fn *queue_rq ➡️ blk_status_t (*queue_rq)(struct blk_mq_hw_ctx *, const struct blk_mq_queue_data *)
  • Field type changed. commit_rqs_fn *commit_rqs ➡️ void (*commit_rqs)(struct blk_mq_hw_ctx *)
  • Field type changed. get_budget_fn *get_budget ➡️ bool (*get_budget)(struct request_queue *)
  • Field type changed. put_budget_fn *put_budget ➡️ void (*put_budget)(struct request_queue *)
  • Field type changed. timeout_fn *timeout ➡️ enum blk_eh_timer_return (*timeout)(struct request *, bool)
  • Field type changed. poll_fn *poll ➡️ int (*poll)(struct blk_mq_hw_ctx *)
  • Field type changed. complete_fn *complete ➡️ void (*complete)(struct request *)
  • Field type changed. init_hctx_fn *init_hctx ➡️ int (*init_hctx)(struct blk_mq_hw_ctx *, void *, unsigned int)
  • Field type changed. exit_hctx_fn *exit_hctx ➡️ void (*exit_hctx)(struct blk_mq_hw_ctx *, unsigned int)
  • Field type changed. init_request_fn *init_request ➡️ int (*init_request)(struct blk_mq_tag_set *, struct request *, unsigned int, unsigned int)
  • Field type changed. exit_request_fn *exit_request ➡️ void (*exit_request)(struct blk_mq_tag_set *, struct request *, unsigned int)
  • Field type changed. cleanup_rq_fn *cleanup_rq ➡️ void (*cleanup_rq)(struct request *)
  • Field type changed. busy_fn *busy ➡️ bool (*busy)(struct request_queue *)
  • Field type changed. map_queues_fn *map_queues ➡️ int (*map_queues)(struct blk_mq_tag_set *)
• Changed between 5.11 and 5.13 ⚠️

  • Field added. void (*set_rq_budget_token)(struct request *, int)
  • Field added. int (*get_rq_budget_token)(struct request *)
  • Field type changed. bool (*get_budget)(struct request_queue *) ➡️ int (*get_budget)(struct request_queue *)
  • Field type changed. void (*put_budget)(struct request_queue *) ➡️ void (*put_budget)(struct request_queue *, int)
• No changes between 5.13 and 5.15 ✅
• Changed between 5.15 and 5.19 ⚠️

  • Field added. void (*queue_rqs)(struct request **)
  • Field removed. void (*initialize_rq_fn)(struct request *)
  • Field type changed. int (*poll)(struct blk_mq_hw_ctx *) ➡️ int (*poll)(struct blk_mq_hw_ctx *, struct io_comp_batch *)
• Changed between 5.19 and 6.2 ⚠️

  • Field type changed. enum blk_eh_timer_return (*timeout)(struct request *, bool) ➡️ enum blk_eh_timer_return (*timeout)(struct request *)
  • Field type changed. int (*map_queues)(struct blk_mq_tag_set *) ➡️ void (*map_queues)(struct blk_mq_tag_set *)
• 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 ✅