scsi: Call scsi_initialize_rq() for filesystem requests
If a pass-through request is submitted then blk_get_request() initializes that request by calling scsi_initialize_rq(). Also call this function for filesystem requests. Introduce CMD_INITIALIZED to keep track of whether or not a request has already been initialized. Signed-off-by: NBart Van Assche <bart.vanassche@wdc.com> Cc: Christoph Hellwig <hch@lst.de> Cc: Brian King <brking@linux.vnet.ibm.com> Cc: Hannes Reinecke <hare@suse.com> Cc: Johannes Thumshirn <jthumshirn@suse.de> Reviewed-by: NJohannes Thumshirn <jthumshirn@suse.de> Reviewed-by: NChristoph Hellwig <hch@lst.de> Signed-off-by: NMartin K. Petersen <martin.petersen@oracle.com>
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