From 363041a5f74b953ab6b705ac9c88e5eda218a24b Mon Sep 17 00:00:00 2001 From: Mark Fasheh Date: Wed, 17 Jan 2007 12:31:35 -0800 Subject: ocfs2: temporarily remove extent map caching The code in extent_map.c is not prepared to deal with a subtree being rotated between lookups. This can happen when filling holes in sparse files. Instead of a lengthy patch to update the code (which would likely lose the benefit of caching subtree roots), we remove most of the algorithms and implement a simple path based lookup. A less ambitious extent caching scheme will be added in a later patch. Signed-off-by: Mark Fasheh --- fs/ocfs2/extent_map.h | 19 ++----------------- 1 file changed, 2 insertions(+), 17 deletions(-) (limited to 'fs/ocfs2/extent_map.h') diff --git a/fs/ocfs2/extent_map.h b/fs/ocfs2/extent_map.h index fa3745efa88..036e2325144 100644 --- a/fs/ocfs2/extent_map.h +++ b/fs/ocfs2/extent_map.h @@ -25,22 +25,7 @@ #ifndef _EXTENT_MAP_H #define _EXTENT_MAP_H -int init_ocfs2_extent_maps(void); -void exit_ocfs2_extent_maps(void); - -/* - * EVERY CALL here except _init, _trunc, and _drop expects alloc_sem - * to be held. The allocation cannot change at all while the map is - * in the process of being updated. - */ -int ocfs2_extent_map_init(struct inode *inode); -int ocfs2_extent_map_append(struct inode *inode, - struct ocfs2_extent_rec *rec, - u32 new_clusters); -int ocfs2_extent_map_get_blocks(struct inode *inode, - u64 v_blkno, int count, - u64 *p_blkno, int *ret_count); -int ocfs2_extent_map_drop(struct inode *inode, u32 new_clusters); -int ocfs2_extent_map_trunc(struct inode *inode, u32 new_clusters); +int ocfs2_extent_map_get_blocks(struct inode *inode, u64 v_blkno, u64 *p_blkno, + int *ret_count); #endif /* _EXTENT_MAP_H */ -- cgit v1.2.3