From: Gal Pressman <galpress@amazon.com>
Date: Mon, 6 Jul 2020 15:03:42 +0300
Subject: RDMA/core: Remove ib_alloc_mr_user function
Patch-mainline: v5.9-rc1
Git-commit: b64b74b1d51cce8c9496b6a071c1d59786c2144d
References: jsc#SLE-15176

Allocating an MR flow can only be initiated by kernel users, and not from
userspace. As a result, the udata parameter is always being passed as
NULL. Rename ib_alloc_mr_user function to ib_alloc_mr and remove the udata
parameter.

Link: https://lore.kernel.org/r/20200706120343.10816-3-galpress@amazon.com
Signed-off-by: Gal Pressman <galpress@amazon.com>
Reviewed-by: Leon Romanovsky <leonro@mellanox.com>
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
Acked-by: Thomas Bogendoerfer <tbogendoerfer@suse.de>
---
 drivers/infiniband/core/verbs.c |   11 +++++------
 include/rdma/ib_verbs.h         |   10 ++--------
 2 files changed, 7 insertions(+), 14 deletions(-)

--- a/drivers/infiniband/core/verbs.c
+++ b/drivers/infiniband/core/verbs.c
@@ -2104,11 +2104,10 @@ int ib_dereg_mr_user(struct ib_mr *mr, s
 EXPORT_SYMBOL(ib_dereg_mr_user);
 
 /**
- * ib_alloc_mr_user() - Allocates a memory region
+ * ib_alloc_mr() - Allocates a memory region
  * @pd:            protection domain associated with the region
  * @mr_type:       memory region type
  * @max_num_sg:    maximum sg entries available for registration.
- * @udata:	   user data or null for kernel objects
  *
  * Notes:
  * Memory registeration page/sg lists must not exceed max_num_sg.
@@ -2116,8 +2115,8 @@ EXPORT_SYMBOL(ib_dereg_mr_user);
  * max_num_sg * used_page_size.
  *
  */
-struct ib_mr *ib_alloc_mr_user(struct ib_pd *pd, enum ib_mr_type mr_type,
-			       u32 max_num_sg, struct ib_udata *udata)
+struct ib_mr *ib_alloc_mr(struct ib_pd *pd, enum ib_mr_type mr_type,
+			  u32 max_num_sg)
 {
 	struct ib_mr *mr;
 
@@ -2132,7 +2131,7 @@ struct ib_mr *ib_alloc_mr_user(struct ib
 		goto out;
 	}
 
-	mr = pd->device->ops.alloc_mr(pd, mr_type, max_num_sg, udata);
+	mr = pd->device->ops.alloc_mr(pd, mr_type, max_num_sg, NULL);
 	if (IS_ERR(mr))
 		goto out;
 
@@ -2151,7 +2150,7 @@ out:
 	trace_mr_alloc(pd, mr_type, max_num_sg, mr);
 	return mr;
 }
-EXPORT_SYMBOL(ib_alloc_mr_user);
+EXPORT_SYMBOL(ib_alloc_mr);
 
 /**
  * ib_alloc_mr_integrity() - Allocates an integrity memory region
--- a/include/rdma/ib_verbs.h
+++ b/include/rdma/ib_verbs.h
@@ -4267,14 +4267,8 @@ static inline int ib_dereg_mr(struct ib_
 	return ib_dereg_mr_user(mr, NULL);
 }
 
-struct ib_mr *ib_alloc_mr_user(struct ib_pd *pd, enum ib_mr_type mr_type,
-			       u32 max_num_sg, struct ib_udata *udata);
-
-static inline struct ib_mr *ib_alloc_mr(struct ib_pd *pd,
-					enum ib_mr_type mr_type, u32 max_num_sg)
-{
-	return ib_alloc_mr_user(pd, mr_type, max_num_sg, NULL);
-}
+struct ib_mr *ib_alloc_mr(struct ib_pd *pd, enum ib_mr_type mr_type,
+			  u32 max_num_sg);
 
 struct ib_mr *ib_alloc_mr_integrity(struct ib_pd *pd,
 				    u32 max_num_data_sg,