ata_sg_clean(9) centos man page | unix.com

ATA_SG_CLEAN(9) 					       libata Core Internals						   ATA_SG_CLEAN(9)

NAME
       ata_sg_clean - Unmap DMA memory associated with command

SYNOPSIS
       void ata_sg_clean(struct ata_queued_cmd * qc);

ARGUMENTS
       qc
	   Command containing DMA memory to be released

DESCRIPTION
       Unmap all mapped DMA memory associated with this command.

LOCKING
       spin_lock_irqsave(host lock)

AUTHOR
       Jeff Garzik
	   Author.

COPYRIGHT
Kernel Hackers Manual 3.10					     June 2014							   ATA_SG_CLEAN(9)