Do you have sample programs for these programs (or even better mini-xfstest programs) that we can use to make sure this e.g. works for cifs.ko (which has similar concept to FS UUID for most remote filesystems etc.)? ---------- Forwarded message --------- From: Christian Brauner <brauner@xxxxxxxxxx> Date: Fri, Mar 8, 2024 at 4:19 AM Subject: [GIT PULL] vfs uuid To: Linus Torvalds <torvalds@xxxxxxxxxxxxxxxxxxxx> Cc: Christian Brauner <brauner@xxxxxxxxxx>, <linux-fsdevel@xxxxxxxxxxxxxxx>, <linux-kernel@xxxxxxxxxxxxxxx> Hey Linus, /* Summary */ This adds two new ioctl()s for getting the filesystem uuid and retrieving the sysfs path based on the path of a mounted filesystem. The bcachefs pull request should include a merge of this as well as it depends on the two new ioctls. Getting the filesystem uuid has been implemented in filesystem specific code for a while it's now lifted as a generic ioctl. /* Testing */ clang: Debian clang version 16.0.6 (19) gcc: (Debian 13.2.0-7) 13.2.0 All patches are based on v6.8-rc1 and have been sitting in linux-next. No build failures or warnings were observed. /* Conflicts */ At the time of creating this PR no merge conflicts were reported from linux-next and no merge conflicts showed up doing a test-merge with current mainline. The following changes since commit 6613476e225e090cc9aad49be7fa504e290dd33d: Linux 6.8-rc1 (2024-01-21 14:11:32 -0800) are available in the Git repository at: git@xxxxxxxxxxxxxxxxxxx:pub/scm/linux/kernel/git/vfs/vfs tags/vfs-6.9.uuid for you to fetch changes up to 01edea1bbd1768be41729fd018a82556fa1810ec: Merge series "filesystem visibility ioctls" of https://lore.kernel.org/r/20240207025624.1019754-1-kent.overstreet@xxxxxxxxx (2024-02-12 13:14:21 +0100) Please consider pulling these changes from the signed vfs-6.9.uuid tag. Thanks! Christian ---------------------------------------------------------------- vfs-6.9.uuid ---------------------------------------------------------------- Christian Brauner (1): Merge series "filesystem visibility ioctls" of https://lore.kernel.org/r/20240207025624.1019754-1-kent.overstreet@xxxxxxxxx Kent Overstreet (6): fs: super_set_uuid() ovl: convert to super_set_uuid() fs: FS_IOC_GETUUID fat: Hook up sb->s_uuid fs: add FS_IOC_GETFSSYSFSPATH xfs: add support for FS_IOC_GETFSSYSFSPATH Documentation/userspace-api/ioctl/ioctl-number.rst | 3 +- fs/ext4/super.c | 2 +- fs/f2fs/super.c | 2 +- fs/fat/inode.c | 3 ++ fs/gfs2/ops_fstype.c | 2 +- fs/ioctl.c | 33 ++++++++++++++ fs/kernfs/mount.c | 4 +- fs/ocfs2/super.c | 4 +- fs/overlayfs/util.c | 18 +++++--- fs/ubifs/super.c | 2 +- fs/xfs/xfs_mount.c | 4 +- include/linux/fs.h | 52 ++++++++++++++++++++++ include/uapi/linux/fs.h | 25 +++++++++++ mm/shmem.c | 4 +- 14 files changed, 141 insertions(+), 17 deletions(-) -- Thanks, Steve
