scsi: cxlflash: Support file descriptor mapping
The cxlflash core fop API requires a way to invoke the fault and release handlers of underlying transports using their native file-based APIs. This provides the core with the ability to insert selectively itself into the processing stream of these operations for cleanup. Implement these two fops to map and release when requested. Signed-off-by: NUma Krishnan <ukrishn@linux.vnet.ibm.com> Acked-by: NMatthew R. Ochs <mrochs@linux.vnet.ibm.com> Signed-off-by: NMartin K. Petersen <martin.petersen@oracle.com>
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