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authorTom Tucker <tom@opengridcomputing.com>2008-05-28 14:17:44 -0400
committerTom Tucker <tom@opengridcomputing.com>2008-07-02 16:01:56 -0400
commit87295b6c5c7fd7bbc0ce3e7f42d2adbbac7352b9 (patch)
tree11a273d3fd2c61bbbf102b80c0b45a0f0021d499 /net/sunrpc/xprtrdma/svc_rdma_sendto.c
parente6ab9143719ff76f0b95f0866c4d0f6c743ad2e0 (diff)
svcrdma: Add dma map count and WARN_ON
Add a dma map count in order to verify that all DMA mapping resources have been freed when the transport is closed. Signed-off-by: Tom Tucker <tom@opengridcomputing.com>
Diffstat (limited to 'net/sunrpc/xprtrdma/svc_rdma_sendto.c')
-rw-r--r--net/sunrpc/xprtrdma/svc_rdma_sendto.c3
1 files changed, 3 insertions, 0 deletions
diff --git a/net/sunrpc/xprtrdma/svc_rdma_sendto.c b/net/sunrpc/xprtrdma/svc_rdma_sendto.c
index bdc11a30e937..a19b22b452a3 100644
--- a/net/sunrpc/xprtrdma/svc_rdma_sendto.c
+++ b/net/sunrpc/xprtrdma/svc_rdma_sendto.c
@@ -163,6 +163,7 @@ static int send_write(struct svcxprt_rdma *xprt, struct svc_rqst *rqstp,
163 sge_bytes = min((size_t)bc, 163 sge_bytes = min((size_t)bc,
164 (size_t)(vec->sge[xdr_sge_no].iov_len-sge_off)); 164 (size_t)(vec->sge[xdr_sge_no].iov_len-sge_off));
165 sge[sge_no].length = sge_bytes; 165 sge[sge_no].length = sge_bytes;
166 atomic_inc(&xprt->sc_dma_used);
166 sge[sge_no].addr = 167 sge[sge_no].addr =
167 ib_dma_map_single(xprt->sc_cm_id->device, 168 ib_dma_map_single(xprt->sc_cm_id->device,
168 (void *) 169 (void *)
@@ -385,6 +386,7 @@ static int send_reply(struct svcxprt_rdma *rdma,
385 ctxt->count = 1; 386 ctxt->count = 1;
386 387
387 /* Prepare the SGE for the RPCRDMA Header */ 388 /* Prepare the SGE for the RPCRDMA Header */
389 atomic_inc(&rdma->sc_dma_used);
388 ctxt->sge[0].addr = 390 ctxt->sge[0].addr =
389 ib_dma_map_page(rdma->sc_cm_id->device, 391 ib_dma_map_page(rdma->sc_cm_id->device,
390 page, 0, PAGE_SIZE, DMA_TO_DEVICE); 392 page, 0, PAGE_SIZE, DMA_TO_DEVICE);
@@ -396,6 +398,7 @@ static int send_reply(struct svcxprt_rdma *rdma,
396 for (sge_no = 1; byte_count && sge_no < vec->count; sge_no++) { 398 for (sge_no = 1; byte_count && sge_no < vec->count; sge_no++) {
397 sge_bytes = min_t(size_t, vec->sge[sge_no].iov_len, byte_count); 399 sge_bytes = min_t(size_t, vec->sge[sge_no].iov_len, byte_count);
398 byte_count -= sge_bytes; 400 byte_count -= sge_bytes;
401 atomic_inc(&rdma->sc_dma_used);
399 ctxt->sge[sge_no].addr = 402 ctxt->sge[sge_no].addr =
400 ib_dma_map_single(rdma->sc_cm_id->device, 403 ib_dma_map_single(rdma->sc_cm_id->device,
401 vec->sge[sge_no].iov_base, 404 vec->sge[sge_no].iov_base,