diff options
| author | Yishai Hadas <yishaih@mellanox.com> | 2014-01-28 12:40:15 +0100 |
|---|---|---|
| committer | Roland Dreier <roland@purestorage.com> | 2014-03-04 19:34:28 +0100 |
| commit | eeb8461e36c99fdf2d058751be924a2aab215005 (patch) | |
| tree | c92498349f842be5985194c840e2dd12201df861 /drivers/infiniband/hw/mlx5/doorbell.c | |
| parent | Linux 3.14-rc4 (diff) | |
| download | linux-eeb8461e36c99fdf2d058751be924a2aab215005.tar.xz linux-eeb8461e36c99fdf2d058751be924a2aab215005.zip | |
IB: Refactor umem to use linear SG table
This patch refactors the IB core umem code and vendor drivers to use a
linear (chained) SG table instead of chunk list. With this change the
relevant code becomes clearer—no need for nested loops to build and
use umem.
Signed-off-by: Shachar Raindel <raindel@mellanox.com>
Signed-off-by: Yishai Hadas <yishaih@mellanox.com>
Signed-off-by: Roland Dreier <roland@purestorage.com>
Diffstat (limited to 'drivers/infiniband/hw/mlx5/doorbell.c')
| -rw-r--r-- | drivers/infiniband/hw/mlx5/doorbell.c | 4 |
1 files changed, 1 insertions, 3 deletions
diff --git a/drivers/infiniband/hw/mlx5/doorbell.c b/drivers/infiniband/hw/mlx5/doorbell.c index 256a23344f28..ece028fc47d6 100644 --- a/drivers/infiniband/hw/mlx5/doorbell.c +++ b/drivers/infiniband/hw/mlx5/doorbell.c @@ -47,7 +47,6 @@ int mlx5_ib_db_map_user(struct mlx5_ib_ucontext *context, unsigned long virt, struct mlx5_db *db) { struct mlx5_ib_user_db_page *page; - struct ib_umem_chunk *chunk; int err = 0; mutex_lock(&context->db_page_mutex); @@ -75,8 +74,7 @@ int mlx5_ib_db_map_user(struct mlx5_ib_ucontext *context, unsigned long virt, list_add(&page->list, &context->db_page_list); found: - chunk = list_entry(page->umem->chunk_list.next, struct ib_umem_chunk, list); - db->dma = sg_dma_address(chunk->page_list) + (virt & ~PAGE_MASK); + db->dma = sg_dma_address(page->umem->sg_head.sgl) + (virt & ~PAGE_MASK); db->u.user_page = page; ++page->refcnt; |