From: Ira Weiny <[email protected]> In order for MRs to be tracked against the open verbs context the ufile needs to have a pointer to hand to the GUP code.
No references need to be taken as this should be valid for the lifetime of the context. Signed-off-by: Ira Weiny <[email protected]> --- drivers/infiniband/core/uverbs.h | 1 + drivers/infiniband/core/uverbs_main.c | 1 + 2 files changed, 2 insertions(+) diff --git a/drivers/infiniband/core/uverbs.h b/drivers/infiniband/core/uverbs.h index 1e5aeb39f774..e802ba8c67d6 100644 --- a/drivers/infiniband/core/uverbs.h +++ b/drivers/infiniband/core/uverbs.h @@ -163,6 +163,7 @@ struct ib_uverbs_file { struct page *disassociate_page; struct xarray idr; + struct file *sys_file; /* backpointer to system file object */ }; struct ib_uverbs_event { diff --git a/drivers/infiniband/core/uverbs_main.c b/drivers/infiniband/core/uverbs_main.c index 11c13c1381cf..002c24e0d4db 100644 --- a/drivers/infiniband/core/uverbs_main.c +++ b/drivers/infiniband/core/uverbs_main.c @@ -1092,6 +1092,7 @@ static int ib_uverbs_open(struct inode *inode, struct file *filp) INIT_LIST_HEAD(&file->umaps); filp->private_data = file; + file->sys_file = filp; list_add_tail(&file->list, &dev->uverbs_file_list); mutex_unlock(&dev->lists_mutex); srcu_read_unlock(&dev->disassociate_srcu, srcu_key); -- 2.20.1
