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btrfs: add definition for EXTENT_TREE_V2

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This adds the initial definition of the EXTENT_TREE_V2 incompat feature
flag.  This also hides the support behind CONFIG_BTRFS_DEBUG.

THIS IS A IN DEVELOPMENT FORMAT CHANGE, DO NOT USE UNLESS YOU ARE A
DEVELOPER OR A TESTER.

The format is in flux and will be added in stages, any fs will need to
be re-made between updates to the format.

Signed-off-by: Josef Bacik <josef@toxicpanda.com>
Signed-off-by: David Sterba <dsterba@suse.com>
This commit is contained in:
Josef Bacik
2021-12-15 15:39:58 -05:00
committed by David Sterba
parent 65faced5b9
commit 2c7d2a2302
3 changed files with 26 additions and 1 deletions
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1
include/uapi/linux/btrfs.h
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@@ -309,6 +309,7 @@ struct btrfs_ioctl_fs_info_args {
#define BTRFS_FEATURE_INCOMPAT_METADATA_UUID (1ULL << 10)
#define BTRFS_FEATURE_INCOMPAT_RAID1C34 (1ULL << 11)
#define BTRFS_FEATURE_INCOMPAT_ZONED (1ULL << 12)
#define BTRFS_FEATURE_INCOMPAT_EXTENT_TREE_V2 (1ULL << 13)
struct btrfs_ioctl_feature_flags {
__u64 compat_flags;