diff options
| author | Jeff Layton <jlayton@redhat.com> | 2014-03-17 13:10:05 -0400 |
|---|---|---|
| committer | J. Bruce Fields <bfields@redhat.com> | 2014-03-28 18:02:13 -0400 |
| commit | 3cbe01a94c7b369f943f8a9d40394198d757cdd4 (patch) | |
| tree | 565877c84255ce7d04ae04523526365f884555d2 /net/sunrpc | |
| parent | 2e8c12e1b76536d723ae0501de0729ddf6a9142c (diff) | |
| download | linux-3cbe01a94c7b369f943f8a9d40394198d757cdd4.tar.gz | |
svcrdma: fix offset calculation for non-page aligned sge entries
The xdr_off value in dma_map_xdr gets passed to ib_dma_map_page as the
offset into the page to be mapped. This calculation does not correctly
take into account the case where the data starts at some offset into
the page. Increment the xdr_off by the page_base to ensure that it is
respected.
Cc: Tom Tucker <tom@opengridcomputing.com>
Signed-off-by: Jeff Layton <jlayton@redhat.com>
Signed-off-by: J. Bruce Fields <bfields@redhat.com>
Diffstat (limited to 'net/sunrpc')
| -rw-r--r-- | net/sunrpc/xprtrdma/svc_rdma_sendto.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/net/sunrpc/xprtrdma/svc_rdma_sendto.c b/net/sunrpc/xprtrdma/svc_rdma_sendto.c index 11e90f8c0fc5..7e024a51617e 100644 --- a/net/sunrpc/xprtrdma/svc_rdma_sendto.c +++ b/net/sunrpc/xprtrdma/svc_rdma_sendto.c @@ -265,6 +265,7 @@ static dma_addr_t dma_map_xdr(struct svcxprt_rdma *xprt, xdr_off -= xdr->head[0].iov_len; if (xdr_off < xdr->page_len) { /* This offset is in the page list */ + xdr_off += xdr->page_base; page = xdr->pages[xdr_off >> PAGE_SHIFT]; xdr_off &= ~PAGE_MASK; } else { |