[LTP] [PATCH 1/5] fcntl40: test for owner values on classic posix lock

[Petr Vorel]

Hi Alex,

...
> > > + * [Description]
> > > + * Tests gfs2 dlm posix op queue handling in the kernel.
> > > + * It is recommended to run watch -n 0.1 "dlm_tool plocks $LS"
> > > + * aside to monitor dlm plock handling.
> > > + *
> > > + * [How to use it]
> > > + * Call it with TMPDIR=/mnt ./fcntl40 where TMPDIR is a gfs2 mountpoint.
> > I wonder if we could check for GFS2_MAGIC (we'd need to add it to
> > include/tst_fs.h => 0x01161970) and quit the test with tst_brk(TCONF) if TMPDIR
> > is not on gfs2.

> > ATM we don't have any helper in struct tst_test, which would do it.


> I will mention that gfs2 is only an example here. It becomes
> interesting when a file system implements its own .lock() callback OR
> if somebody wants to test file system core, when a filesystem does not
> implement its own .lock().

I see .lock is implemented in 9p, afs, ceph, cifs, ocfs2, orangefs, even NFS.
"file system core": do you mean VFS? Because that would be more usable than the
filesystems above (which are quite exotic).

...

Kind regards,
Petr