On Sat, Feb 03, 2007 at 12:30:55AM -0500, J. Bruce Fields wrote:
>
> This is another attempt at a posix locking interface that allows us to
> provide NFS clients with cluster-coherent locking without blocking lockd
> while the filesystem goes off and talks to other nodes.
Marc and I have an updated version of this at:
git://linux-nfs.org/~bfields/linux.git
(See the server-cluster-locking-api branch.)
Changes include:
- bugfixes for GFS2; thanks to some setup help from Wendy Chang
and others, Marc has been able to run locking tests against an
nfs-exported GFS2 filesystem
- preallocation of storage for conflicting lock in lockd's
testlock implementation, to avoid a race identified by Trond
- Cleanup suggested by Christoph and others, including:
- creation of posix-to-flock helper functions
- rewrite of posix_test_lock interface to agree with
->lock( ,F_GETLK, )
- removal of some unnecessary parentheses, untangling of
some slightly tortured logic
We're hoping to get a detailed review from Trond sometime in the coming
month, after which we'll probably mailbomb linux-fsdevel again, but
any comments are welcome in the meantime.
--b.
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