[v3,01/27] btrfs: introduce HMZONED feature flag
diff mbox series

Message ID 20190808093038.4163421-2-naohiro.aota@wdc.com
State New
Headers show
Series
  • btrfs zoned block device support
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Commit Message

Naohiro Aota Aug. 8, 2019, 9:30 a.m. UTC
This patch introduces the HMZONED incompat flag. The flag indicates that
the volume management will satisfy the constraints imposed by host-managed
zoned block devices.

Signed-off-by: Damien Le Moal <damien.lemoal@wdc.com>
Signed-off-by: Naohiro Aota <naohiro.aota@wdc.com>
---
 fs/btrfs/sysfs.c           | 2 ++
 include/uapi/linux/btrfs.h | 1 +
 2 files changed, 3 insertions(+)

Comments

Anand Jain Aug. 16, 2019, 4:49 a.m. UTC | #1
On 8/8/19 5:30 PM, Naohiro Aota wrote:
> This patch introduces the HMZONED incompat flag. The flag indicates that
> the volume management will satisfy the constraints imposed by host-managed
> zoned block devices.
> 
> Signed-off-by: Damien Le Moal <damien.lemoal@wdc.com>
> Signed-off-by: Naohiro Aota <naohiro.aota@wdc.com>

Reviewed-by: Anand Jain <anand.jain@oracle.com>

Patch
diff mbox series

diff --git a/fs/btrfs/sysfs.c b/fs/btrfs/sysfs.c
index e6493b068294..ad708a9edd0b 100644
--- a/fs/btrfs/sysfs.c
+++ b/fs/btrfs/sysfs.c
@@ -193,6 +193,7 @@  BTRFS_FEAT_ATTR_INCOMPAT(raid56, RAID56);
 BTRFS_FEAT_ATTR_INCOMPAT(skinny_metadata, SKINNY_METADATA);
 BTRFS_FEAT_ATTR_INCOMPAT(no_holes, NO_HOLES);
 BTRFS_FEAT_ATTR_INCOMPAT(metadata_uuid, METADATA_UUID);
+BTRFS_FEAT_ATTR_INCOMPAT(hmzoned, HMZONED);
 BTRFS_FEAT_ATTR_COMPAT_RO(free_space_tree, FREE_SPACE_TREE);
 
 static struct attribute *btrfs_supported_feature_attrs[] = {
@@ -207,6 +208,7 @@  static struct attribute *btrfs_supported_feature_attrs[] = {
 	BTRFS_FEAT_ATTR_PTR(skinny_metadata),
 	BTRFS_FEAT_ATTR_PTR(no_holes),
 	BTRFS_FEAT_ATTR_PTR(metadata_uuid),
+	BTRFS_FEAT_ATTR_PTR(hmzoned),
 	BTRFS_FEAT_ATTR_PTR(free_space_tree),
 	NULL
 };
diff --git a/include/uapi/linux/btrfs.h b/include/uapi/linux/btrfs.h
index c195896d478f..2d5e8f801135 100644
--- a/include/uapi/linux/btrfs.h
+++ b/include/uapi/linux/btrfs.h
@@ -270,6 +270,7 @@  struct btrfs_ioctl_fs_info_args {
 #define BTRFS_FEATURE_INCOMPAT_SKINNY_METADATA	(1ULL << 8)
 #define BTRFS_FEATURE_INCOMPAT_NO_HOLES		(1ULL << 9)
 #define BTRFS_FEATURE_INCOMPAT_METADATA_UUID	(1ULL << 10)
+#define BTRFS_FEATURE_INCOMPAT_HMZONED		(1ULL << 11)
 
 struct btrfs_ioctl_feature_flags {
 	__u64 compat_flags;