From d6fc6c93636ffefd3d209d90a749e4e4ea51d6c1 Mon Sep 17 00:00:00 2001 From: Amir Goldstein Date: Tue, 24 Oct 2023 10:55:35 +0300 Subject: [PATCH] gfs2: fs: derive f_fsid from s_uuid gfs2 already has optional persistent uuid. Use that uuid to report f_fsid in statfs(2), same as ext2/ext4/zonefs. This allows gfs2 to be monitored by fanotify filesystem watch. for example, with inotify-tools 4.23.8.0, the following command can be used to watch changes over entire filesystem: fsnotifywatch --filesystem /mnt/gfs2 Signed-off-by: Amir Goldstein Reviewed-by: Jan Kara Signed-off-by: Andreas Gruenbacher --- fs/gfs2/super.c | 1 + 1 file changed, 1 insertion(+) diff --git a/fs/gfs2/super.c b/fs/gfs2/super.c index 4dad30dd72fc..726f062bc490 100644 --- a/fs/gfs2/super.c +++ b/fs/gfs2/super.c @@ -1006,6 +1006,7 @@ static int gfs2_statfs(struct dentry *dentry, struct kstatfs *buf) buf->f_files = sc.sc_dinodes + sc.sc_free; buf->f_ffree = sc.sc_free; buf->f_namelen = GFS2_FNAMESIZE; + buf->f_fsid = uuid_to_fsid(sb->s_uuid.b); return 0; }