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svcrdma: Update synopsis of svc_rdma_copy_inline_range()

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Since the RDMA Read I/O state is now contained in the recv_ctxt,
svc_rdma_copy_inline_range() can use that recv_ctxt to derive the
read_info 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 09:58:01 -05:00
parent 6e4b9b8643
commit 6518204d23
1 changed files with 9 additions and 8 deletions
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17
net/sunrpc/xprtrdma/svc_rdma_rw.c
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@ -778,7 +778,8 @@ static int svc_rdma_build_read_chunk(struct svc_rqst *rqstp,
/**
* svc_rdma_copy_inline_range - Copy part of the inline content into pages
* @info: context for RDMA Reads
* @rqstp: RPC transaction context
* @head: context for ongoing I/O
* @offset: offset into the Receive buffer of region to copy
* @remaining: length of region to copy
*
@ -791,13 +792,12 @@ static int svc_rdma_build_read_chunk(struct svc_rqst *rqstp,
* %0: Inline content was successfully copied
* %-EINVAL: offset or length was incorrect
*/
static int svc_rdma_copy_inline_range(struct svc_rdma_read_info *info,
static int svc_rdma_copy_inline_range(struct svc_rqst *rqstp,
struct svc_rdma_recv_ctxt *head,
unsigned int offset,
unsigned int remaining)
{
struct svc_rdma_recv_ctxt *head = info->ri_readctxt;
unsigned char *dst, *src = head->rc_recv_buf;
struct svc_rqst *rqstp = info->ri_rqst;
unsigned int page_no, numpages;
numpages = PAGE_ALIGN(head->rc_pageoff + remaining) >> PAGE_SHIFT;
@ -846,7 +846,8 @@ static noinline int svc_rdma_read_multiple_chunks(struct svcxprt_rdma *rdma,
{
struct svc_rdma_recv_ctxt *head = info->ri_readctxt;
const struct svc_rdma_pcl *pcl = &head->rc_read_pcl;
struct xdr_buf *buf = &info->ri_rqst->rq_arg;
struct svc_rqst *rqstp = info->ri_rqst;
struct xdr_buf *buf = &rqstp->rq_arg;
struct svc_rdma_chunk *chunk, *next;
unsigned int start, length;
int ret;
@ -854,7 +855,7 @@ static noinline int svc_rdma_read_multiple_chunks(struct svcxprt_rdma *rdma,
start = 0;
chunk = pcl_first_chunk(pcl);
length = chunk->ch_position;
ret = svc_rdma_copy_inline_range(info, start, length);
ret = svc_rdma_copy_inline_range(rqstp, head, start, length);
if (ret < 0)
return ret;
@ -869,14 +870,14 @@ static noinline int svc_rdma_read_multiple_chunks(struct svcxprt_rdma *rdma,
start += length;
length = next->ch_position - head->rc_readbytes;
ret = svc_rdma_copy_inline_range(info, start, length);
ret = svc_rdma_copy_inline_range(rqstp, head, start, length);
if (ret < 0)
return ret;
}
start += length;
length = head->rc_byte_len - start;
ret = svc_rdma_copy_inline_range(info, start, length);
ret = svc_rdma_copy_inline_range(rqstp, head, start, length);
if (ret < 0)
return ret;