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| author | Mark Fasheh <mfasheh@suse.com> | 2008-07-21 14:29:16 -0700 |
|---|---|---|
| committer | Mark Fasheh <mfasheh@suse.com> | 2008-10-13 13:57:57 -0700 |
| commit | 53da4939f349d4edd283b043219221ca5b78e4d4 (patch) | |
| tree | 3e0f8e1bd5474822431cffd1e449df9b639e1772 /fs/ocfs2/locks.h | |
| parent | a447c0932445f92ce6f4c1bd020f62c5097a7842 (diff) | |
| download | linux-53da4939f349d4edd283b043219221ca5b78e4d4.tar.bz2 | |
ocfs2: POSIX file locks support
This is actually pretty easy since fs/dlm already handles the bulk of the
work. The Ocfs2 userspace cluster stack module already uses fs/dlm as the
underlying lock manager, so I only had to add the right calls.
Cluster-aware POSIX locks ("plocks") can be turned off by the same means at
UNIX locks - mount with 'noflocks', or create a local-only Ocfs2 volume.
Internally, the file system uses two sets of file_operations, depending on
whether cluster aware plocks is required. This turns out to be easier than
implementing local-only versions of ->lock.
Signed-off-by: Mark Fasheh <mfasheh@suse.com>
Diffstat (limited to 'fs/ocfs2/locks.h')
| -rw-r--r-- | fs/ocfs2/locks.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/fs/ocfs2/locks.h b/fs/ocfs2/locks.h index 9743ef2324ec..496d488b271f 100644 --- a/fs/ocfs2/locks.h +++ b/fs/ocfs2/locks.h @@ -27,5 +27,6 @@ #define OCFS2_LOCKS_H int ocfs2_flock(struct file *file, int cmd, struct file_lock *fl); +int ocfs2_lock(struct file *file, int cmd, struct file_lock *fl); #endif /* OCFS2_LOCKS_H */ |