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SCSI_DEVICE_QUIESCE(9) SCSI mid layer SCSI_DEVICE_QUIESCE(9)

NAME

scsi_device_quiesce - Block user issued commands.

SYNOPSIS

int scsi_device_quiesce(struct scsi_device * sdev);

ARGUMENTS

sdev
scsi device to quiesce.

DESCRIPTION

This works by trying to transition to the SDEV_QUIESCE state (which must be a legal transition). When the device is in this state, only special requests will be accepted, all others will be deferred. Since special requests may also be requeued requests, a successful return doesn't guarantee the device will be totally quiescent.
Must be called with user context, may sleep.
Returns zero if unsuccessful or an error if not.

AUTHORS

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

COPYRIGHT

May 2018 Kernel Hackers Manual 3.16