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-rw-r--r--drivers/infiniband/core/umem.c5
1 files changed, 5 insertions, 0 deletions
diff --git a/drivers/infiniband/core/umem.c b/drivers/infiniband/core/umem.c
index 26d0470eef6..664d2faa9e7 100644
--- a/drivers/infiniband/core/umem.c
+++ b/drivers/infiniband/core/umem.c
@@ -40,6 +40,11 @@
#include "uverbs.h"
+#define IB_UMEM_MAX_PAGE_CHUNK \
+ ((PAGE_SIZE - offsetof(struct ib_umem_chunk, page_list)) / \
+ ((void *) &((struct ib_umem_chunk *) 0)->page_list[1] - \
+ (void *) &((struct ib_umem_chunk *) 0)->page_list[0]))
+
static void __ib_umem_release(struct ib_device *dev, struct ib_umem *umem, int dirty)
{
struct ib_umem_chunk *chunk, *tmp;