1SCSI_INTERNAL_DEVICE(9)         SCSI mid layer         SCSI_INTERNAL_DEVICE(9)
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NAME

6       scsi_internal_device_block - internal function to put a device
7       temporarily into the SDEV_BLOCK state
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SYNOPSIS

10       int scsi_internal_device_block(struct scsi_device * sdev);
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ARGUMENTS

13       sdev
14           device to block
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DESCRIPTION

17       Block request made by scsi lld´s to temporarily stop all scsi commands
18       on the specified device. Called from interrupt or normal process
19       context.
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21       Returns zero if successful or error if not
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NOTES

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

31       James Bottomley <James.Bottomley@hansenpartnership.com>
32           Author.
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34       Rob Landley <rob@landley.net>
35           Author.
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38Kernel Hackers Manual 2.6.         June 2019           SCSI_INTERNAL_DEVICE(9)
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