From: "Dmitry V. Levin" <ldv@altlinux.org>
Date: Sun, 16 Dec 2018 04:49:52 +0300
Subject: [PATCH] uapi: linux/blkzoned.h: fix BLKGETZONESZ and BLKGETNRZONES
 definitions
Git-commit: 98256376f81ab7afd8dd233b99c78356159c21d5
Patch-mainline: v4.20-rc5
References: bsc#1104967,FATE#325924

According to the documentation in include/uapi/asm-generic/ioctl.h,
_IOW means userspace is writing and kernel is reading, and
_IOR means userspace is reading and kernel is writing.

In case of these two ioctls, kernel is writing and userspace is reading,
so they have to be _IOR instead of _IOW.

Fixes: 72cd87576d1d8 ("block: Introduce BLKGETZONESZ ioctl")
Fixes: 65e4e3eee83d7 ("block: Introduce BLKGETNRZONES ioctl")
Reviewed-by: Damien Le Moal <damien.lemoal@wdc.com>
Signed-off-by: Dmitry V. Levin <ldv@altlinux.org>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Acked-by: Hannes Reinecke <hare@suse.com>
---
 include/uapi/linux/blkzoned.h | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/include/uapi/linux/blkzoned.h b/include/uapi/linux/blkzoned.h
index 8f08ff9bdea0..6fa38d001d84 100644
--- a/include/uapi/linux/blkzoned.h
+++ b/include/uapi/linux/blkzoned.h
@@ -141,7 +141,7 @@ struct blk_zone_range {
  */
 #define BLKREPORTZONE	_IOWR(0x12, 130, struct blk_zone_report)
 #define BLKRESETZONE	_IOW(0x12, 131, struct blk_zone_range)
-#define BLKGETZONESZ	_IOW(0x12, 132, __u32)
-#define BLKGETNRZONES	_IOW(0x12, 133, __u32)
+#define BLKGETZONESZ	_IOR(0x12, 132, __u32)
+#define BLKGETNRZONES	_IOR(0x12, 133, __u32)
 
 #endif /* _UAPI_BLKZONED_H */
-- 
2.16.4