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IB/iser: fix a check of SG alignment for RDMA 

dma mapping may include a "compaction" of the sg associated with scsi command.
Hence, the size of the maximal prefix of the SG which is aligned for rdma must be
compared against the length of the dma mapped sg (mem->dma_nents) and not against
the size of it before it was mapped (mem->size).

Signed-off-by: Erez Zilber <erezz@voltaire.com>
Signed-off-by: Roland Dreier <rolandd@cisco.com>
This commit is contained in:
Erez Zilber 2006-09-11 12:19:17 +03:00 committed by Roland Dreier
parent 61a73c708f
commit 777a71dd4d
1 changed files with 1 additions and 1 deletions
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2
drivers/infiniband/ulp/iser/iser_memory.c
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@ -378,7 +378,7 @@ int iser_reg_rdma_mem(struct iscsi_iser_cmd_task *iser_ctask,
regd_buf = &iser_ctask->rdma_regd[cmd_dir];
aligned_len = iser_data_buf_aligned_len(mem);
if (aligned_len != mem->size) {
if (aligned_len != mem->dma_nents) {
iser_err("rdma alignment violation %d/%d aligned\n",
aligned_len, mem->size);
iser_data_buf_dump(mem);