On 2017/12/19 19:53, Qu Wenruo wrote:
> Since kernel is deprecating the support for specifying inherit type,
> remove the support in btrfs-progs too.
> 
> Thankfully, the options for qgroup inheritance is hidden and not
> documented, so user shouldn't be affected at all.
> 
> Signed-off-by: Qu Wenruo <w...@suse.com>
> ---
>  cmds-subvolume.c | 21 ---------------------
>  qgroup.c         | 42 ------------------------------------------
>  qgroup.h         |  3 ---
>  3 files changed, 66 deletions(-)
> 
> diff --git a/cmds-subvolume.c b/cmds-subvolume.c
> index dc626a6495e5..e0839da7d8f8 100644
> --- a/cmds-subvolume.c
> +++ b/cmds-subvolume.c
> @@ -134,13 +134,6 @@ static int cmd_subvol_create(int argc, char **argv)
>                       break;
>  
>               switch (c) {
> -             case 'c':
> -                     res = qgroup_inherit_add_copy(&inherit, optarg, 0);
> -                     if (res) {
> -                             retval = res;
> -                             goto out;
> -                     }
> -                     break;
>               case 'i':
>                       res = qgroup_inherit_add_group(&inherit, optarg);
>                       if (res) {

No harm, but we should remove "c:" from getopt() too.
Tomohiro

> @@ -670,13 +663,6 @@ static int cmd_subvol_snapshot(int argc, char **argv)
>                       break;
>  
>               switch (c) {
> -             case 'c':
> -                     res = qgroup_inherit_add_copy(&inherit, optarg, 0);
> -                     if (res) {
> -                             retval = res;
> -                             goto out;
> -                     }
> -                     break;
>               case 'i':
>                       res = qgroup_inherit_add_group(&inherit, optarg);
>                       if (res) {
> @@ -687,13 +673,6 @@ static int cmd_subvol_snapshot(int argc, char **argv)
>               case 'r':
>                       readonly = 1;
>                       break;
> -             case 'x':
> -                     res = qgroup_inherit_add_copy(&inherit, optarg, 1);
> -                     if (res) {
> -                             retval = res;
> -                             goto out;
> -                     }
> -                     break;
>               default:
>                       usage(cmd_subvol_snapshot_usage);
>               }
> diff --git a/qgroup.c b/qgroup.c
> index 156825fd431d..e9158a260251 100644
> --- a/qgroup.c
> +++ b/qgroup.c
> @@ -1310,45 +1310,3 @@ int qgroup_inherit_add_group(struct 
> btrfs_qgroup_inherit **inherit, char *arg)
>  
>       return 0;
>  }
> -
> -int qgroup_inherit_add_copy(struct btrfs_qgroup_inherit **inherit, char *arg,
> -                         int type)
> -{
> -     int ret;
> -     u64 qgroup_src;
> -     u64 qgroup_dst;
> -     char *p;
> -     int pos = 0;
> -
> -     p = strchr(arg, ':');
> -     if (!p) {
> -bad:
> -             error("invalid copy specification, missing separator :");
> -             return -EINVAL;
> -     }
> -     *p = 0;
> -     qgroup_src = parse_qgroupid(arg);
> -     qgroup_dst = parse_qgroupid(p + 1);
> -     *p = ':';
> -
> -     if (!qgroup_src || !qgroup_dst)
> -             goto bad;
> -
> -     if (*inherit)
> -             pos = (*inherit)->num_qgroups +
> -                   (*inherit)->num_ref_copies * 2 * type;
> -
> -     ret = qgroup_inherit_realloc(inherit, 2, pos);
> -     if (ret)
> -             return ret;
> -
> -     (*inherit)->qgroups[pos++] = qgroup_src;
> -     (*inherit)->qgroups[pos++] = qgroup_dst;
> -
> -     if (!type)
> -             ++(*inherit)->num_ref_copies;
> -     else
> -             ++(*inherit)->num_excl_copies;
> -
> -     return 0;
> -}
> diff --git a/qgroup.h b/qgroup.h
> index 875fbdf37f5f..3fc57123dc2d 100644
> --- a/qgroup.h
> +++ b/qgroup.h
> @@ -92,7 +92,4 @@ int btrfs_qgroup_setup_comparer(struct 
> btrfs_qgroup_comparer_set **comp_set,
>                               int is_descending);
>  int qgroup_inherit_size(struct btrfs_qgroup_inherit *p);
>  int qgroup_inherit_add_group(struct btrfs_qgroup_inherit **inherit, char 
> *arg);
> -int qgroup_inherit_add_copy(struct btrfs_qgroup_inherit **inherit, char *arg,
> -                         int type);
> -
>  #endif
> 

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