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authorChuck Lever <chuck.lever@oracle.com>2023-12-04 09:57:22 -0500
committerChuck Lever <chuck.lever@oracle.com>2024-01-07 17:54:29 -0500
commit8e122582680c6f8acd686a5a2af9c0e46fe90f2d (patch)
treeeebe5326f9691bceb824342bba90bfee2f0e04c2
parentb1818412d06fc03605d02dbdd4a7c53dc9e2d5ba (diff)
svcrdma: Move svc_rdma_read_info::ri_pageno to struct svc_rdma_recv_ctxt
Further clean up: move the page index field into svc_rdma_recv_ctxt. Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
-rw-r--r--include/linux/sunrpc/svc_rdma.h1
-rw-r--r--net/sunrpc/xprtrdma/svc_rdma_rw.c21
2 files changed, 10 insertions, 12 deletions
diff --git a/include/linux/sunrpc/svc_rdma.h b/include/linux/sunrpc/svc_rdma.h
index 6c7501ae4e29..0ea66f73bec2 100644
--- a/include/linux/sunrpc/svc_rdma.h
+++ b/include/linux/sunrpc/svc_rdma.h
@@ -157,6 +157,7 @@ struct svc_rdma_recv_ctxt {
__be32 rc_msgtype;
/* State for pulling a Read chunk */
+ unsigned int rc_curpage;
unsigned int rc_readbytes;
struct svc_rdma_chunk_ctxt rc_cc;
diff --git a/net/sunrpc/xprtrdma/svc_rdma_rw.c b/net/sunrpc/xprtrdma/svc_rdma_rw.c
index a27b8f338ae5..487acb192558 100644
--- a/net/sunrpc/xprtrdma/svc_rdma_rw.c
+++ b/net/sunrpc/xprtrdma/svc_rdma_rw.c
@@ -292,7 +292,6 @@ static void svc_rdma_write_done(struct ib_cq *cq, struct ib_wc *wc)
struct svc_rdma_read_info {
struct svc_rqst *ri_rqst;
struct svc_rdma_recv_ctxt *ri_readctxt;
- unsigned int ri_pageno;
unsigned int ri_pageoff;
};
@@ -720,20 +719,18 @@ static int svc_rdma_build_read_segment(struct svcxprt_rdma *rdma,
if (!info->ri_pageoff)
head->rc_page_count++;
- sg_set_page(sg, rqstp->rq_pages[info->ri_pageno],
+ sg_set_page(sg, rqstp->rq_pages[head->rc_curpage],
seg_len, info->ri_pageoff);
sg = sg_next(sg);
info->ri_pageoff += seg_len;
if (info->ri_pageoff == PAGE_SIZE) {
- info->ri_pageno++;
+ head->rc_curpage++;
info->ri_pageoff = 0;
}
len -= seg_len;
- /* Safety check */
- if (len &&
- &rqstp->rq_pages[info->ri_pageno + 1] > rqstp->rq_page_end)
+ if (len && ((head->rc_curpage + 1) > ARRAY_SIZE(rqstp->rq_pages)))
goto out_overrun;
}
@@ -748,7 +745,7 @@ static int svc_rdma_build_read_segment(struct svcxprt_rdma *rdma,
return 0;
out_overrun:
- trace_svcrdma_page_overrun_err(&cc->cc_cid, info->ri_pageno);
+ trace_svcrdma_page_overrun_err(&cc->cc_cid, head->rc_curpage);
return -EINVAL;
}
@@ -790,7 +787,7 @@ static int svc_rdma_build_read_chunk(struct svcxprt_rdma *rdma,
*
* Take a page at a time from rqstp->rq_pages and copy the inline
* content from the Receive buffer into that page. Update
- * info->ri_pageno and info->ri_pageoff so that the next RDMA Read
+ * head->rc_curpage and info->ri_pageoff so that the next RDMA Read
* result will land contiguously with the copied content.
*
* Return values:
@@ -816,13 +813,13 @@ static int svc_rdma_copy_inline_range(struct svc_rdma_read_info *info,
if (!info->ri_pageoff)
head->rc_page_count++;
- dst = page_address(rqstp->rq_pages[info->ri_pageno]);
- memcpy(dst + info->ri_pageno, src + offset, page_len);
+ dst = page_address(rqstp->rq_pages[head->rc_curpage]);
+ memcpy(dst + head->rc_curpage, src + offset, page_len);
head->rc_readbytes += page_len;
info->ri_pageoff += page_len;
if (info->ri_pageoff == PAGE_SIZE) {
- info->ri_pageno++;
+ head->rc_curpage++;
info->ri_pageoff = 0;
}
remaining -= page_len;
@@ -1137,10 +1134,10 @@ int svc_rdma_process_read_list(struct svcxprt_rdma *rdma,
return -ENOMEM;
info->ri_rqst = rqstp;
info->ri_readctxt = head;
- info->ri_pageno = 0;
info->ri_pageoff = 0;
svc_rdma_cc_init(rdma, cc);
cc->cc_cqe.done = svc_rdma_wc_read_done;
+ head->rc_curpage = 0;
head->rc_readbytes = 0;
if (pcl_is_empty(&head->rc_call_pcl)) {