SCSI_INTERNAL_DEVICE - Online Linux Manual PageSection : 9
Updated : June 2018
Source : Kernel Hackers Manual 2​.6​.
Note : SCSI mid layer

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NAMEscsi_internal_device_block − internal function to put a device temporarily into the SDEV_BLOCK state

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SYNOPSISint scsi_internal_device_block(struct scsi_device * sdev);

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ARGUMENTSsdev device to block

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DESCRIPTIONBlock request made by scsi lld´s to temporarily stop all scsi commands on the specified device​. Called from interrupt or normal process context​. Returns zero if successful or error if not

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NOTESThis routine transitions the device to the SDEV_BLOCK state (which must be a legal transition)​. When the device is in this state, all commands are deferred until the scsi lld reenables the device with scsi_device_unblock or device_block_tmo fires​. This routine assumes the host_lock is held on entry​.

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AUTHORSJames Bottomley <​James.Bottomley@hansenpartnership.com​> Author. Rob Landley <​rob@landley.net​> Author.

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