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| author | Andy Grover <andy.grover@oracle.com> | 2010-01-12 14:13:15 -0800 |
|---|---|---|
| committer | Andy Grover <andy.grover@oracle.com> | 2010-09-08 18:11:38 -0700 |
| commit | ff87e97a9d70c9ae133d3d3d7792b26ab85f4297 (patch) | |
| tree | 32de73cdf5e4353e89b3351eaae695f69faa868b /net/rds/message.c | |
| parent | 21f79afa5fda2820671a8f64c3d0e43bb118053b (diff) | |
| download | linux-ff87e97a9d70c9ae133d3d3d7792b26ab85f4297.tar.gz linux-ff87e97a9d70c9ae133d3d3d7792b26ab85f4297.tar.xz | |
RDS: make m_rdma_op a member of rds_message
This eliminates a separate memory alloc, although
it is now necessary to add an "r_active" flag, since
it is no longer to use the m_rdma_op pointer as an
indicator of if an rdma op is present.
rdma SGs allocated from rm sg pool.
rds_rm_size also gets bigger. It's a little inefficient to
run through CMSGs twice, but it makes later steps a lot smoother.
Signed-off-by: Andy Grover <andy.grover@oracle.com>
Diffstat (limited to 'net/rds/message.c')
| -rw-r--r-- | net/rds/message.c | 9 |
1 files changed, 6 insertions, 3 deletions
diff --git a/net/rds/message.c b/net/rds/message.c index fb382fbb5b6f..4352ce79b376 100644 --- a/net/rds/message.c +++ b/net/rds/message.c @@ -69,8 +69,8 @@ static void rds_message_purge(struct rds_message *rm) } rm->data.m_nents = 0; - if (rm->rdma.m_rdma_op) - rds_rdma_free_op(rm->rdma.m_rdma_op); + if (rm->rdma.m_rdma_op.r_active) + rds_rdma_free_op(&rm->rdma.m_rdma_op); if (rm->rdma.m_rdma_mr) rds_mr_put(rm->rdma.m_rdma_mr); } @@ -259,14 +259,17 @@ struct rds_message *rds_message_map_pages(unsigned long *page_addrs, unsigned in { struct rds_message *rm; unsigned int i; + int num_sgs = ceil(total_len, PAGE_SIZE); + int extra_bytes = num_sgs * sizeof(struct scatterlist); - rm = rds_message_alloc(ceil(total_len, PAGE_SIZE), GFP_KERNEL); + rm = rds_message_alloc(extra_bytes, GFP_KERNEL); if (!rm) return ERR_PTR(-ENOMEM); set_bit(RDS_MSG_PAGEVEC, &rm->m_flags); rm->m_inc.i_hdr.h_len = cpu_to_be32(total_len); rm->data.m_nents = ceil(total_len, PAGE_SIZE); + rm->data.m_sg = rds_message_alloc_sgs(rm, num_sgs); for (i = 0; i < rm->data.m_nents; ++i) { sg_set_page(&rm->data.m_sg[i], |