ocfs2: Change metadata caching locks to an operations structure.

We don't really want to cart around too many new fields on the
ocfs2_caching_info structure.  So let's wrap all our access of the
parent object in a set of operations.  One pointer on caching_info, and
more flexibility to boot.

Signed-off-by: Joel Becker <joel.becker@oracle.com>

1 files changed, 4 insertions, 4 deletions

diff --git a/fs/ocfs2/ocfs2.h b/fs/ocfs2/ocfs2.h
index eef3bd077c10..6e54a496299e 100644
--- a/fs/ocfs2/ocfs2.h
+++ b/fs/ocfs2/ocfs2.h
@@ -68,14 +68,14 @@ enum ocfs2_caching_info_flags {
 	OCFS2_CACHE_FL_INLINE	= 1<<1,
 };
 
+struct ocfs2_caching_operations;
 struct ocfs2_caching_info {
 	/*
 	 * The parent structure provides the locks, but because the
-	 * parent structure can differ, struct ocfs2_caching_info needs
-	 * its own pointers to them.
+	 * parent structure can differ, it provides locking operations
+	 * to struct ocfs2_caching_info.
 	 */
-	spinlock_t		*ci_lock;
-	struct mutex		*ci_io_mutex;
+	const struct ocfs2_caching_operations *ci_ops;
 
 	unsigned int		ci_flags;
 	unsigned int		ci_num_cached;