[PATCH 2/6] block: add support for selecting all zones

[Javier González]

From: Javier González <javier.gonz at samsung.com>

Add flag to allow selecting all zones on a single zone management
operation

Signed-off-by: Javier González <javier.gonz at samsung.com>
Signed-off-by: SelvaKumar S <selvakuma.s1 at samsung.com>
Signed-off-by: Kanchan Joshi <joshi.k at samsung.com>
Signed-off-by: Nitesh Shetty <nj.shetty at samsung.com>
---
 block/blk-zoned.c             | 3 +++
 include/linux/blk_types.h     | 3 ++-
 include/uapi/linux/blkzoned.h | 9 +++++++++
 3 files changed, 14 insertions(+), 1 deletion(-)

diff --git a/block/blk-zoned.c b/block/blk-zoned.c
index e87c60004dc5..29194388a1bb 100644
--- a/block/blk-zoned.c
+++ b/block/blk-zoned.c
@@ -420,6 +420,9 @@ int blkdev_zone_mgmt_ioctl(struct block_device *bdev, fmode_t mode,
 		return -ENOTTY;
 	}
 
+	if (zmgmt.flags & BLK_ZONE_SELECT_ALL)
+		op |= REQ_ZONE_ALL;
+
 	return blkdev_zone_mgmt(bdev, op, zmgmt.sector, zmgmt.nr_sectors,
 				GFP_KERNEL);
 }
diff --git a/include/linux/blk_types.h b/include/linux/blk_types.h
index ccb895f911b1..16b57fb2b99c 100644
--- a/include/linux/blk_types.h
+++ b/include/linux/blk_types.h
@@ -351,6 +351,7 @@ enum req_flag_bits {
 	 * work item to avoid such priority inversions.
 	 */
 	__REQ_CGROUP_PUNT,
+	__REQ_ZONE_ALL,		/* apply zone operation to all zones */
 
 	/* command specific flags for REQ_OP_WRITE_ZEROES: */
 	__REQ_NOUNMAP,		/* do not free blocks when zeroing */
@@ -378,7 +379,7 @@ enum req_flag_bits {
 #define REQ_BACKGROUND		(1ULL << __REQ_BACKGROUND)
 #define REQ_NOWAIT		(1ULL << __REQ_NOWAIT)
 #define REQ_CGROUP_PUNT		(1ULL << __REQ_CGROUP_PUNT)
-
+#define REQ_ZONE_ALL		(1ULL << __REQ_ZONE_ALL)
 #define REQ_NOUNMAP		(1ULL << __REQ_NOUNMAP)
 #define REQ_HIPRI		(1ULL << __REQ_HIPRI)
 
diff --git a/include/uapi/linux/blkzoned.h b/include/uapi/linux/blkzoned.h
index 07b5fde21d9f..a8c89fe58f97 100644
--- a/include/uapi/linux/blkzoned.h
+++ b/include/uapi/linux/blkzoned.h
@@ -157,6 +157,15 @@ enum blk_zone_action {
 	BLK_ZONE_MGMT_RESET	= 0x4,
 };
 
+/**
+ * enum blk_zone_mgmt_flags - Flags for blk_zone_mgmt
+ *
+ * BLK_ZONE_SELECT_ALL: Select all zones for current zone action
+ */
+enum blk_zone_mgmt_flags {
+	BLK_ZONE_SELECT_ALL	= 1 << 0,
+};
+
 /**
  * struct blk_zone_mgmt - Extended zoned management
  *
-- 
2.17.1