scsi_internal_device_block(9) - phpMan
SCSI_INTERNAL_DEVICE(9) SCSI mid layer SCSI_INTERNAL_DEVICE(9)
NAME
scsi_internal_device_block - internal function to put a device temporarily into the
SDEV_BLOCK state
SYNOPSIS
int scsi_internal_device_block(struct scsi_device * sdev);
ARGUMENTS
sdev
device to block
DESCRIPTION
Block 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
NOTES
This 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.
AUTHORS
James Bottomley <James.Bottomley AT hansenpartnership.com>
Author.
Rob Landley <rob AT landley.net>
Author.
COPYRIGHT
Kernel Hackers Manual 4.8. January 2017 SCSI_INTERNAL_DEVICE(9)
|