[PATCH v2 01/17] locks: consolidate "nolease" routines
jeff.layton at primarydata.com
Fri Sep 5 05:48:36 MDT 2014
On Thu, 4 Sep 2014 13:12:00 -0700
Christoph Hellwig <hch at infradead.org> wrote:
> On Thu, Sep 04, 2014 at 02:25:35PM -0400, Trond Myklebust wrote:
> > Actually, it looks as if when you compile with !CONFIG_FILE_LOCKING,
> > then fcntl_setlease() returns the value '0' (which would be
> > "success!"). The word "confusing" only begins to describe it all.
> That's incorrect for sure, we should agree on a single sensible code
> 1) !CONFIG_FILE_LOCKING
> 2) !lease_enable
> 3) filesystem doesn't support leases.
Agreed. I think -ENOLCK is really better than -EINVAL.
I usually take -EINVAL to mean "you sent me something bogus". Whereas
-ENOLCK just says "locking doesn't work". -ENOLCK seems closer to the
situation in all 3 cases above.
That said, this is a user-visible change. The main userland consumer of
leases (AFAIK) is samba, so I'll take a peek at that code and run it by
them before merging anything.
Jeff Layton <jlayton at primarydata.com>
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