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authorLinus Torvalds <torvalds@linux-foundation.org>2015-10-09 16:34:45 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2015-10-09 16:34:45 -0700
commit38aa0a59a6669af702c523e1d525b24ff5fd471b (patch)
treec01d24969abb4a094ee280bb54159ca7efcb5747
parent5163ac76370dc5298219c92a4befeb9e23de6f66 (diff)
parentc91aed9896946721bb30705ea2904edb3725dd61 (diff)
downloadlinux-linaro-stable-38aa0a59a6669af702c523e1d525b24ff5fd471b.tar.gz
Merge tag 'nfsd-4.3-1' of git://linux-nfs.org/~bfields/linux
Pull nfsd bugfix from Bruce Fields: "Just one RDMA bugfix" * tag 'nfsd-4.3-1' of git://linux-nfs.org/~bfields/linux: svcrdma: handle rdma read with a non-zero initial page offset
-rw-r--r--net/sunrpc/xprtrdma/svc_rdma_recvfrom.c6
1 files changed, 4 insertions, 2 deletions
diff --git a/net/sunrpc/xprtrdma/svc_rdma_recvfrom.c b/net/sunrpc/xprtrdma/svc_rdma_recvfrom.c
index cb5174284074..5f6ca47092b0 100644
--- a/net/sunrpc/xprtrdma/svc_rdma_recvfrom.c
+++ b/net/sunrpc/xprtrdma/svc_rdma_recvfrom.c
@@ -136,7 +136,8 @@ int rdma_read_chunk_lcl(struct svcxprt_rdma *xprt,
ctxt->direction = DMA_FROM_DEVICE;
ctxt->read_hdr = head;
pages_needed = min_t(int, pages_needed, xprt->sc_max_sge_rd);
- read = min_t(int, pages_needed << PAGE_SHIFT, rs_length);
+ read = min_t(int, (pages_needed << PAGE_SHIFT) - *page_offset,
+ rs_length);
for (pno = 0; pno < pages_needed; pno++) {
int len = min_t(int, rs_length, PAGE_SIZE - pg_off);
@@ -235,7 +236,8 @@ int rdma_read_chunk_frmr(struct svcxprt_rdma *xprt,
ctxt->direction = DMA_FROM_DEVICE;
ctxt->frmr = frmr;
pages_needed = min_t(int, pages_needed, xprt->sc_frmr_pg_list_len);
- read = min_t(int, pages_needed << PAGE_SHIFT, rs_length);
+ read = min_t(int, (pages_needed << PAGE_SHIFT) - *page_offset,
+ rs_length);
frmr->kva = page_address(rqstp->rq_arg.pages[pg_no]);
frmr->direction = DMA_FROM_DEVICE;