[lustre-devel] [PATCH] drivers: staging/lustre: lmv_obd.c - suppress Sparse user cast warning

[Michael Sartain]

Comment above assignment states that uarg does not point to user space memory
(ll_dir_ioctl does copy_from_user), so this is a valid cast. This patch adds a
__force annotation to suppress the "cast removes address space of expression"
Sparse warning.

Signed-off-by: Michael Sartain <mikesart at fastmail.com>
---
 drivers/staging/lustre/lustre/lmv/lmv_obd.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/staging/lustre/lustre/lmv/lmv_obd.c b/drivers/staging/lustre/lustre/lmv/lmv_obd.c
index 271e18966f50..a6473a06dcf7 100644
--- a/drivers/staging/lustre/lustre/lmv/lmv_obd.c
+++ b/drivers/staging/lustre/lustre/lmv/lmv_obd.c
@@ -989,7 +989,7 @@ static int lmv_iocontrol(unsigned int cmd, struct obd_export *exp,
 		 * Note: this is from llite(see ll_dir_ioctl()), @uarg does not
 		 * point to user space memory for FID2MDTIDX.
 		 */
-		*(__u32 *)uarg = mdt_index;
+		*(__force __u32 *)uarg = mdt_index;
 		break;
 	}
 	case OBD_IOC_FID2PATH: {
-- 
2.11.0