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authorJoel Becker <joel.becker@oracle.com>2010-01-30 17:02:10 +0300
committerJoel Becker <joel.becker@oracle.com>2010-02-27 02:41:18 +0300
commitcbe0e331fdbdb256943499358c75bc098a2134c1 (patch)
treeaa3d20a721ad858006e1d5e4a92eef42136df3bf /fs/ocfs2/stackglue.h
parent0016eedc4185a3cd7e578b027a6e69001b85d6c4 (diff)
downloadlinux-cbe0e331fdbdb256943499358c75bc098a2134c1.tar.xz
ocfs2_dlmfs: Enable the use of user cluster stacks.
Unlike ocfs2, dlmfs has no permanent storage. It can't store off a cluster stack it is supposed to be using. So it can't specify the stack name in ocfs2_cluster_connect(). Instead, we create ocfs2_cluster_connect_agnostic(), which simply uses the stack that is currently enabled. This is find for dlmfs, which will rely on the stack initialization. We add the "stackglue" capability to dlmfs's capability list. This lets userspace know dlmfs can be used with all cluster stacks. Signed-off-by: Joel Becker <joel.becker@oracle.com>
Diffstat (limited to 'fs/ocfs2/stackglue.h')
-rw-r--r--fs/ocfs2/stackglue.h11
1 files changed, 11 insertions, 0 deletions
diff --git a/fs/ocfs2/stackglue.h b/fs/ocfs2/stackglue.h
index b1981ba4c91f..8ce7398ae1d2 100644
--- a/fs/ocfs2/stackglue.h
+++ b/fs/ocfs2/stackglue.h
@@ -246,6 +246,17 @@ int ocfs2_cluster_connect(const char *stack_name,
void *recovery_data),
void *recovery_data,
struct ocfs2_cluster_connection **conn);
+/*
+ * Used by callers that don't store their stack name. They must ensure
+ * all nodes have the same stack.
+ */
+int ocfs2_cluster_connect_agnostic(const char *group,
+ int grouplen,
+ struct ocfs2_locking_protocol *lproto,
+ void (*recovery_handler)(int node_num,
+ void *recovery_data),
+ void *recovery_data,
+ struct ocfs2_cluster_connection **conn);
int ocfs2_cluster_disconnect(struct ocfs2_cluster_connection *conn,
int hangup_pending);
void ocfs2_cluster_hangup(const char *group, int grouplen);