ocfs2: Take the inode out of the metadata read/write paths.

We are really passing the inode into the ocfs2_read/write_blocks()
functions to get at the metadata cache.  This commit passes the cache
directly into the metadata block functions, divorcing them from the
inode.

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

1 files changed, 14 insertions, 7 deletions

diff --git a/fs/ocfs2/uptodate.h b/fs/ocfs2/uptodate.h
index 3b33eb88d32..f268273d651 100644
--- a/fs/ocfs2/uptodate.h
+++ b/fs/ocfs2/uptodate.h
@@ -38,6 +38,8 @@ struct ocfs2_caching_operations {
 	 */
 	u64	(*co_owner)(struct ocfs2_caching_info *ci);
 
+	/* The superblock is needed during I/O. */
+	struct super_block *(*co_get_super)(struct ocfs2_caching_info *ci);
 	/*
 	 * Lock and unlock the caching data.  These will not sleep, and
 	 * should probably be spinlocks.
@@ -58,20 +60,25 @@ void exit_ocfs2_uptodate_cache(void);
 
 void ocfs2_metadata_cache_init(struct ocfs2_caching_info *ci,
 			       const struct ocfs2_caching_operations *ops);
-void ocfs2_metadata_cache_purge(struct inode *inode);
+void ocfs2_metadata_cache_purge(struct ocfs2_caching_info *ci);
 
-int ocfs2_buffer_uptodate(struct inode *inode,
+u64 ocfs2_metadata_cache_owner(struct ocfs2_caching_info *ci);
+struct super_block *ocfs2_metadata_cache_get_super(struct ocfs2_caching_info *ci);
+void ocfs2_metadata_cache_io_lock(struct ocfs2_caching_info *ci);
+void ocfs2_metadata_cache_io_unlock(struct ocfs2_caching_info *ci);
+
+int ocfs2_buffer_uptodate(struct ocfs2_caching_info *ci,
 			  struct buffer_head *bh);
-void ocfs2_set_buffer_uptodate(struct inode *inode,
+void ocfs2_set_buffer_uptodate(struct ocfs2_caching_info *ci,
 			       struct buffer_head *bh);
-void ocfs2_set_new_buffer_uptodate(struct inode *inode,
+void ocfs2_set_new_buffer_uptodate(struct ocfs2_caching_info *ci,
 				   struct buffer_head *bh);
-void ocfs2_remove_from_cache(struct inode *inode,
+void ocfs2_remove_from_cache(struct ocfs2_caching_info *ci,
 			     struct buffer_head *bh);
-void ocfs2_remove_xattr_clusters_from_cache(struct inode *inode,
+void ocfs2_remove_xattr_clusters_from_cache(struct ocfs2_caching_info *ci,
 					    sector_t block,
 					    u32 c_len);
-int ocfs2_buffer_read_ahead(struct inode *inode,
+int ocfs2_buffer_read_ahead(struct ocfs2_caching_info *ci,
 			    struct buffer_head *bh);
 
 #endif /* OCFS2_UPTODATE_H */