Re: [PATCH v2 1/3] btrfs: Add unprivileged ioctl which returns subvolume information

Hi Tomohiro, Thank you for the patch! Perhaps something to improve: [auto build test WARNING on linus/master] [also build test WARNING on v4.16-rc5 next-20180316] [if your patch is applied to the wrong git tree, please drop us a note to help improve the system] url:

[PATCH v2 1/3] btrfs: Add unprivileged ioctl which returns subvolume information

Add new unprivileged ioctl BTRFS_IOC_GET_SUBVOL_INFO which returns the information of subvolume containing this inode. (i.e. returns the information in ROOT_ITEM and ROOT_BACKREF.) Signed-off-by: Tomohiro Misono --- fs/btrfs/ioctl.c | 118