svcrdma: Update synopsis of svc_rdma_copy_inline_range()

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>

diff --git a/net/sunrpc/xprtrdma/svc_rdma_rw.c b/net/sunrpc/xprtrdma/svc_rdma_rw.c
index 1953f3983695d732516e4f6eaf631b4af30d179e..ec546fe094e8a53cc5c91e20c4be832825466d3c 100644 (file)
--- a/net/sunrpc/xprtrdma/svc_rdma_rw.c
+++ b/net/sunrpc/xprtrdma/svc_rdma_rw.c
@@ -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;