a173db1e08
[ Upstream commit 51f3a478892873337c54068d1185bcd797000a52 ] The 'request' member of struct scsi_cmnd is superfluous. The struct request and struct scsi_cmnd data structures are adjacent and hence the request pointer can be derived easily from a scsi_cmnd pointer. Introduce a helper function that performs that conversion in a type-safe way. This patch is the first step towards removing the request member from struct scsi_cmnd. Making that change has the following advantages: - This is a performance optimization since adding an offset to a pointer takes less time than dereferencing a pointer. - struct scsi_cmnd becomes smaller. Link: https://lore.kernel.org/r/20210809230355.8186-2-bvanassche@acm.org Cc: Christoph Hellwig <hch@lst.de> Cc: Hannes Reinecke <hare@suse.de> Cc: Ming Lei <ming.lei@redhat.com> Reviewed-by: Hannes Reinecke <hare@suse.de> Signed-off-by: Bart Van Assche <bvanassche@acm.org> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com> Stable-dep-of: 19597cad64d6 ("scsi: qla2xxx: Fix system crash due to bad pointer access") Signed-off-by: Sasha Levin <sashal@kernel.org> |
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fc | ||
fc_encode.h | ||
fc_frame.h | ||
fcoe_sysfs.h | ||
iscsi_if.h | ||
iscsi_proto.h | ||
iser.h | ||
libfc.h | ||
libfcoe.h | ||
libiscsi.h | ||
libiscsi_tcp.h | ||
libsas.h | ||
sas.h | ||
sas_ata.h | ||
scsi.h | ||
scsi_bsg_iscsi.h | ||
scsi_cmnd.h | ||
scsi_common.h | ||
scsi_dbg.h | ||
scsi_device.h | ||
scsi_devinfo.h | ||
scsi_dh.h | ||
scsi_driver.h | ||
scsi_eh.h | ||
scsi_host.h | ||
scsi_ioctl.h | ||
scsi_proto.h | ||
scsi_request.h | ||
scsi_tcq.h | ||
scsi_transport.h | ||
scsi_transport_fc.h | ||
scsi_transport_iscsi.h | ||
scsi_transport_sas.h | ||
scsi_transport_spi.h | ||
scsi_transport_srp.h | ||
scsicam.h | ||
sg.h | ||
srp.h | ||
viosrp.h |