3fa7e77f60
[ Upstream commit ad215aaea4f9d637f441566cdbbc610e9849e1fa ]
Define .init_cmd_priv and .exit_cmd_priv callback functions in struct
scsi_host_template. Set .cmd_size such that the SCSI core allocates
per-command private data. Use scsi_cmd_priv() to access that private
data. Remove the req_ring pointer from struct srp_rdma_ch since it is no
longer necessary. Convert srp_alloc_req_data() and srp_free_req_data()
into functions that initialize one instance of the SRP-private command
data. This is a micro-optimization since this patch removes several
pointer dereferences from the hot path.
Note: due to commit e73a5e8e8003 ("scsi: core: Only return started
requests from scsi_host_find_tag()"), it is no longer necessary to protect
the completion path against duplicate responses.
Link: https://lore.kernel.org/r/20210524041211.9480-6-bvanassche@acm.org
Signed-off-by: Bart Van Assche <bvanassche@acm.org>
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
Stable-dep-of: e193b7955dfa ("RDMA/srp: Do not call scsi_done() from srp_abort()")
Signed-off-by: Sasha Levin <sashal@kernel.org>
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| ib_srp.c | ||
| ib_srp.h | ||
| Kbuild | ||
| Kconfig | ||