Hi all, Change the XFS_IOC_GETPARENTS structure definitions so that we can pack parent pointer information more densely, in a manner similar to the attrlistmulti ioctl. This also reduces the amount of memory that has to be copied back to userspace if the buffer doesn't fill up. If you're going to start using this mess, you probably ought to just pull from my git trees, which are linked below. This is an extraordinary way to destroy everything. Enjoy! Comments and questions are, as always, welcome. kernel git tree: https://git.kernel.org/cgit/linux/kernel/git/djwong/xfs-linux.git/log/?h=pptrs-ioctl-flexarray xfsprogs git tree: https://git.kernel.org/cgit/linux/kernel/git/djwong/xfsprogs-dev.git/log/?h=pptrs-ioctl-flexarray fstests git tree: https://git.kernel.org/cgit/linux/kernel/git/djwong/xfstests-dev.git/log/?h=pptrs-ioctl-flexarray --- fs/xfs/libxfs/xfs_fs.h | 75 ++++++++++++++++++++------------------------- fs/xfs/xfs_ioctl.c | 67 +++++++++++++++++++++++++++++----------- fs/xfs/xfs_ondisk.h | 4 +- fs/xfs/xfs_parent_utils.c | 57 +++++++++++++++++++++------------- fs/xfs/xfs_parent_utils.h | 11 ++++++- fs/xfs/xfs_trace.h | 30 +++++++++--------- 6 files changed, 143 insertions(+), 101 deletions(-)
