On Thu, May 09, 2024 at 05:15:00PM +0200, Andrey Albershteyn wrote: > XFS has project quotas which could be attached to a directory. All > new inodes in these directories inherit project ID. > > The project is created from userspace by opening and calling > FS_IOC_FSSETXATTR on each inode. This is not possible for special > files such as FIFO, SOCK, BLK etc. as opening them return special > inode from VFS. Therefore, some inodes are left with empty project > ID. > > This patch adds new XFS ioctl which allows userspace, such as > xfs_quota, to set project ID on special files. This will let > xfs_quota set ID on all inodes and also reset it when project is > removed. Having these ioctls in XFS while the non-AT ones are in the VFS feels really odd. What is the reason to make them XFS-specific?
