add new system file

hc

2024-02-20 102a0743326a03cd1a1202ceda21e175b7d3575c

 kernel/drivers/scsi/scsi_priv.h
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@@ -15,6 +15,7 @@
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 struct Scsi_Host;
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 struct scsi_nl_hdr;
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+#define SCSI_CMD_RETRIES_NO_LIMIT -1
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 /*
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  * Scsi Error Handler Flags
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@@ -29,7 +30,6 @@
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 extern void scsi_exit_hosts(void);
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 /* scsi.c */
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-extern bool scsi_use_blk_mq;
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 int scsi_init_sense_cache(struct Scsi_Host *shost);
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 void scsi_init_command(struct scsi_device *dev, struct scsi_cmnd *cmd);
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 #ifdef CONFIG_SCSI_LOGGING
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@@ -84,20 +84,16 @@
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 int scsi_noretry_cmd(struct scsi_cmnd *scmd);
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 /* scsi_lib.c */
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-extern void scsi_add_cmd_to_list(struct scsi_cmnd *cmd);
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-extern void scsi_del_cmd_from_list(struct scsi_cmnd *cmd);
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 extern int scsi_maybe_unblock_host(struct scsi_device *sdev);
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-extern void scsi_device_unbusy(struct scsi_device *sdev);
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+extern void scsi_device_unbusy(struct scsi_device *sdev, struct scsi_cmnd *cmd);
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 extern void scsi_queue_insert(struct scsi_cmnd *cmd, int reason);
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 extern void scsi_io_completion(struct scsi_cmnd *, unsigned int);
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 extern void scsi_run_host_queues(struct Scsi_Host *shost);
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 extern void scsi_requeue_run_queue(struct work_struct *work);
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-extern struct request_queue *scsi_old_alloc_queue(struct scsi_device *sdev);
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 extern struct request_queue *scsi_mq_alloc_queue(struct scsi_device *sdev);
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 extern void scsi_start_queue(struct scsi_device *sdev);
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 extern int scsi_mq_setup_tags(struct Scsi_Host *shost);
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 extern void scsi_mq_destroy_tags(struct Scsi_Host *shost);
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-extern int scsi_init_queue(void);
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 extern void scsi_exit_queue(void);
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 extern void scsi_evt_thread(struct work_struct *work);
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 struct request_queue;
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@@ -176,7 +172,6 @@
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 #endif /* CONFIG_PM */
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 extern struct async_domain scsi_sd_pm_domain;
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-extern struct async_domain scsi_sd_probe_domain;
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 /* scsi_dh.c */
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 #ifdef CONFIG_SCSI_DH