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svcrdma: Update synopsis of svc_rdma_build_read_chunk()

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Since the RDMA Read I/O state is now contained in the recv_ctxt,
svc_rdma_build_read_chunk() can use that recv_ctxt to derive that
information rather than the other way around. This removes another
usage of the ri_readctxt field, enabling its removal in a
subsequent patch.

Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
This commit is contained in:
Chuck Lever 2023-12-04 09:57:41 -05:00
parent fc20f19b4d
commit 02e8fe1eca
1 changed files with 10 additions and 11 deletions
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21
net/sunrpc/xprtrdma/svc_rdma_rw.c
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@ -749,8 +749,8 @@ out_overrun:
/**
* svc_rdma_build_read_chunk - Build RDMA Read WQEs to pull one RDMA chunk
* @rdma: controlling transport
* @info: context for ongoing I/O
* @rqstp: RPC transaction context
* @head: context for ongoing I/O
* @chunk: Read chunk to pull
*
* Return values:
@ -759,18 +759,16 @@ out_overrun:
* %-ENOMEM: allocating a local resources failed
* %-EIO: a DMA mapping error occurred
*/
static int svc_rdma_build_read_chunk(struct svcxprt_rdma *rdma,
struct svc_rdma_read_info *info,
static int svc_rdma_build_read_chunk(struct svc_rqst *rqstp,
struct svc_rdma_recv_ctxt *head,
const struct svc_rdma_chunk *chunk)
{
struct svc_rdma_recv_ctxt *head = info->ri_readctxt;
const struct svc_rdma_segment *segment;
int ret;
ret = -EINVAL;
pcl_for_each_segment(segment, chunk) {
ret = svc_rdma_build_read_segment(info->ri_rqst,
info->ri_readctxt, segment);
ret = svc_rdma_build_read_segment(rqstp, head, segment);
if (ret < 0)
break;
head->rc_readbytes += segment->rs_length;
@ -861,7 +859,7 @@ static noinline int svc_rdma_read_multiple_chunks(struct svcxprt_rdma *rdma,
return ret;
pcl_for_each_chunk(chunk, pcl) {
ret = svc_rdma_build_read_chunk(rdma, info, chunk);
ret = svc_rdma_build_read_chunk(info->ri_rqst, head, chunk);
if (ret < 0)
return ret;
@ -920,7 +918,7 @@ static int svc_rdma_read_data_item(struct svcxprt_rdma *rdma,
int ret;
chunk = pcl_first_chunk(&head->rc_read_pcl);
ret = svc_rdma_build_read_chunk(rdma, info, chunk);
ret = svc_rdma_build_read_chunk(info->ri_rqst, head, chunk);
if (ret < 0)
goto out;
@ -1025,7 +1023,8 @@ static int svc_rdma_read_call_chunk(struct svcxprt_rdma *rdma,
int ret;
if (pcl_is_empty(pcl))
return svc_rdma_build_read_chunk(rdma, info, call_chunk);
return svc_rdma_build_read_chunk(info->ri_rqst, head,
call_chunk);
start = 0;
chunk = pcl_first_chunk(pcl);
@ -1035,7 +1034,7 @@ static int svc_rdma_read_call_chunk(struct svcxprt_rdma *rdma,
return ret;
pcl_for_each_chunk(chunk, pcl) {
ret = svc_rdma_build_read_chunk(rdma, info, chunk);
ret = svc_rdma_build_read_chunk(info->ri_rqst, head, chunk);
if (ret < 0)
return ret;