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authorMark Fasheh <mark.fasheh@oracle.com>2007-01-17 12:31:35 -0800
committerMark Fasheh <mark.fasheh@oracle.com>2007-04-26 15:01:31 -0700
commit363041a5f74b953ab6b705ac9c88e5eda218a24b (patch)
treec0661c3f88978f2049693682f1cb94b20a8454c0 /fs/ocfs2/extent_map.h
parentdcd0538ff4e854fa9d7f4630b359ca8fdb5cb5a8 (diff)
downloadblackbird-op-linux-363041a5f74b953ab6b705ac9c88e5eda218a24b.tar.gz
blackbird-op-linux-363041a5f74b953ab6b705ac9c88e5eda218a24b.zip
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 <mark.fasheh@oracle.com>
Diffstat (limited to 'fs/ocfs2/extent_map.h')
-rw-r--r--fs/ocfs2/extent_map.h19
1 files changed, 2 insertions, 17 deletions
diff --git a/fs/ocfs2/extent_map.h b/fs/ocfs2/extent_map.h
index fa3745efa886..036e23251448 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 */
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