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

6       scsi_device_quiesce - Block user issued commands.
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SYNOPSIS

9       int scsi_device_quiesce(struct scsi_device * sdev);
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ARGUMENTS

12       sdev
13           scsi device to quiesce.
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DESCRIPTION

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

27       James Bottomley <James.Bottomley@hansenpartnership.com>
28           Author.
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30       Rob Landley <rob@landley.net>
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34Kernel Hackers Manual 2.6.         June 2019            SCSI_DEVICE_QUIESCE(9)
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