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authorMark Fasheh <mfasheh@suse.com>2008-07-22 01:29:16 +0400
committerMark Fasheh <mfasheh@suse.com>2008-10-14 00:57:57 +0400
commit53da4939f349d4edd283b043219221ca5b78e4d4 (patch)
tree3e0f8e1bd5474822431cffd1e449df9b639e1772 /fs/ocfs2/file.h
parenta447c0932445f92ce6f4c1bd020f62c5097a7842 (diff)
downloadlinux-53da4939f349d4edd283b043219221ca5b78e4d4.tar.xz
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/file.h')
-rw-r--r--fs/ocfs2/file.h2
1 files changed, 2 insertions, 0 deletions
diff --git a/fs/ocfs2/file.h b/fs/ocfs2/file.h
index 1e27b4d017ea..5a6d3e48e4ba 100644
--- a/fs/ocfs2/file.h
+++ b/fs/ocfs2/file.h
@@ -28,6 +28,8 @@
extern const struct file_operations ocfs2_fops;
extern const struct file_operations ocfs2_dops;
+extern const struct file_operations ocfs2_fops_no_plocks;
+extern const struct file_operations ocfs2_dops_no_plocks;
extern const struct inode_operations ocfs2_file_iops;
extern const struct inode_operations ocfs2_special_file_iops;
struct ocfs2_alloc_context;