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btrfs: uapi/linux/btrfs.h migration, document subvol flags 

Signed-off-by: Jeff Mahoney <jeffm@suse.com>
Reviewed-by: Liu Bo <bo.li.liu@oracle.com>
Reviewed-by: Josef Bacik <jbacik@fb.com>
Signed-off-by: David Sterba <dsterba@suse.com>
This commit is contained in:
Jeff Mahoney 2016-04-01 16:14:25 -04:00 committed by David Sterba
parent 83288b60bf
commit 884f6eca59
1 changed files with 14 additions and 3 deletions
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17
include/uapi/linux/btrfs.h
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@ -34,9 +34,6 @@ struct btrfs_ioctl_vol_args {
#define BTRFS_DEVICE_PATH_NAME_MAX 1024
#define BTRFS_SUBVOL_CREATE_ASYNC (1ULL << 0)
#define BTRFS_SUBVOL_RDONLY (1ULL << 1)
#define BTRFS_SUBVOL_QGROUP_INHERIT (1ULL << 2)
#define BTRFS_FSID_SIZE 16
#define BTRFS_UUID_SIZE 16
#define BTRFS_UUID_UNPARSED_SIZE 37
@ -85,6 +82,20 @@ struct btrfs_ioctl_qgroup_limit_args {
struct btrfs_qgroup_limit lim;
};
/*
* flags for subvolumes
*
* Used by:
* struct btrfs_ioctl_vol_args_v2.flags
*
* BTRFS_SUBVOL_RDONLY is also provided/consumed by the following ioctls:
* - BTRFS_IOC_SUBVOL_GETFLAGS
* - BTRFS_IOC_SUBVOL_SETFLAGS
*/
#define BTRFS_SUBVOL_CREATE_ASYNC (1ULL << 0)
#define BTRFS_SUBVOL_RDONLY (1ULL << 1)
#define BTRFS_SUBVOL_QGROUP_INHERIT (1ULL << 2)
#define BTRFS_SUBVOL_NAME_MAX 4039
struct btrfs_ioctl_vol_args_v2 {
__s64 fd;