On Thu, 08 Jul 2010, Aneesh Kumar K. V wrote: > How about adding mnt_id to the handle ? Documentation file says it is > unique > > (1) mount ID: unique identifier of the mount (may be reused after umount) > > I also updated (/proc/self/mountinfo) to carry the optional uuid field > With the below patch i get in /proc/self/mountinfo > > 13 1 253:0 / / rw,relatime,uuid:9b5af62a-a34a-43f6-a5bb-1cc22d97e862 - ext3 /dev/root rw,errors=continue,barrier=0,data=writeback > > And the handle returns the value 13 in mnt_id field. We should able to > lookup mountinfo with mnt_id and find the corresponding uuid. > > diff --git a/fs/namespace.c b/fs/namespace.c > index 88058de..498bd9a 100644 > --- a/fs/namespace.c > +++ b/fs/namespace.c > @@ -871,6 +871,9 @@ static int show_mountinfo(struct seq_file *m, void *v) > if (IS_MNT_UNBINDABLE(mnt)) > seq_puts(m, " unbindable"); > > + /* print the uuid */ > + seq_printf(m, ",uuid:%pU", mnt->mnt_sb->s_uuid); > + This should be seq_printf(m, " uuid:%pU", mnt->mnt_sb->s_uuid); Thanks, Miklos -- To unsubscribe from this list: send the line "unsubscribe linux-fsdevel" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
