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scsi: Split scsi_internal_device_block()

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Instead of passing a "wait" argument to scsi_internal_device_block(),
split this function into a function that waits and a function that
doesn't wait. This will make it easier to serialize SCSI device state
changes through a mutex.

Signed-off-by: Bart Van Assche <bart.vanassche@sandisk.com>
Reviewed-by: Hannes Reinecke <hare@suse.com>
Reviewed-by: Johannes Thumshirn <jthumshirn@suse.de>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Cc: Sreekanth Reddy <sreekanth.reddy@broadcom.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
This commit is contained in:
Bart Van Assche
2017-06-02 14:21:53 -07:00
committed by Martin K. Petersen
parent 8e6882545d
commit 551eb598e5
3 changed files with 50 additions and 29 deletions
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2
include/scsi/scsi_device.h
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@@ -472,7 +472,7 @@ static inline int scsi_device_created(struct scsi_device *sdev)
sdev->sdev_state == SDEV_CREATED_BLOCK;
}
int scsi_internal_device_block(struct scsi_device *sdev, bool wait);
int scsi_internal_device_block_nowait(struct scsi_device *sdev);
int scsi_internal_device_unblock(struct scsi_device *sdev,
enum scsi_device_state new_state);