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authorYishai Hadas <yishaih@mellanox.com>2014-01-28 13:40:15 +0200
committerRoland Dreier <roland@purestorage.com>2014-03-04 10:34:28 -0800
commiteeb8461e36c99fdf2d058751be924a2aab215005 (patch)
treec92498349f842be5985194c840e2dd12201df861 /include/rdma/ib_umem.h
parentcfbf8d4857c26a8a307fb7cd258074c9dcd8c691 (diff)
downloadop-kernel-dev-eeb8461e36c99fdf2d058751be924a2aab215005.zip
op-kernel-dev-eeb8461e36c99fdf2d058751be924a2aab215005.tar.gz
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 'include/rdma/ib_umem.h')
-rw-r--r--include/rdma/ib_umem.h11
1 files changed, 3 insertions, 8 deletions
diff --git a/include/rdma/ib_umem.h b/include/rdma/ib_umem.h
index 9ee0d2e..1ea0b65 100644
--- a/include/rdma/ib_umem.h
+++ b/include/rdma/ib_umem.h
@@ -46,17 +46,12 @@ struct ib_umem {
int page_size;
int writable;
int hugetlb;
- struct list_head chunk_list;
struct work_struct work;
struct mm_struct *mm;
unsigned long diff;
-};
-
-struct ib_umem_chunk {
- struct list_head list;
- int nents;
- int nmap;
- struct scatterlist page_list[0];
+ struct sg_table sg_head;
+ int nmap;
+ int npages;
};
#ifdef CONFIG_INFINIBAND_USER_MEM
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