On 08.03.24 03:29, Kent Overstreet wrote: > Add a new statx field for (sub)volume identifiers, as implemented by > btrfs and bcachefs. > > This includes bcachefs support; we'll definitely want btrfs support as > well. For btrfs you can add the following: From 82343b7cb2a947bca43234c443b9c22339367f68 Mon Sep 17 00:00:00 2001 From: Johannes Thumshirn <johannes.thumshirn@xxxxxxx> Date: Mon, 11 Mar 2024 09:09:36 +0100 Subject: [PATCH] btrfs: provide subvolume id for statx Add the inode's subvolume id to the newly proposed statx subvol field. Signed-off-by: Johannes Thumshirn <johannes.thumshirn@xxxxxxx> --- fs/btrfs/inode.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/fs/btrfs/inode.c b/fs/btrfs/inode.c index 37701531eeb1..8cf692c708d7 100644 --- a/fs/btrfs/inode.c +++ b/fs/btrfs/inode.c @@ -8779,6 +8779,9 @@ static int btrfs_getattr(struct mnt_idmap *idmap, generic_fillattr(idmap, request_mask, inode, stat); stat->dev = BTRFS_I(inode)->root->anon_dev; + stat->subvol = BTRFS_I(inode)->root->root_key.objectid; + stat->result_mask |= STATX_SUBVOL; + spin_lock(&BTRFS_I(inode)->lock); delalloc_bytes = BTRFS_I(inode)->new_delalloc_bytes; inode_bytes = inode_get_bytes(inode); -- 2.35.3
