From 34d52cb6c50b5a43901709998f59fb1c5a43dc4a Mon Sep 17 00:00:00 2001 From: Li Zefan Date: Tue, 29 Mar 2011 13:46:06 +0800 Subject: Btrfs: Make free space cache code generic So we can re-use the code to cache free inode numbers. The change is quite straightforward. Two new structures are introduced. - struct btrfs_free_space_ctl We move those variables that are used for caching free space from struct btrfs_block_group_cache to this new struct. - struct btrfs_free_space_op We do block group specific work (e.g. calculation of extents threshold) through functions registered in this struct. And then we can remove references to struct btrfs_block_group_cache. Signed-off-by: Li Zefan --- fs/btrfs/ctree.h | 7 +------ 1 file changed, 1 insertion(+), 6 deletions(-) (limited to 'fs/btrfs/ctree.h') diff --git a/fs/btrfs/ctree.h b/fs/btrfs/ctree.h index 2e61fe1b6b8c..d17e4a3b8bf7 100644 --- a/fs/btrfs/ctree.h +++ b/fs/btrfs/ctree.h @@ -830,9 +830,6 @@ struct btrfs_block_group_cache { u64 bytes_super; u64 flags; u64 sectorsize; - int extents_thresh; - int free_extents; - int total_bitmaps; unsigned int ro:1; unsigned int dirty:1; unsigned int iref:1; @@ -847,9 +844,7 @@ struct btrfs_block_group_cache { struct btrfs_space_info *space_info; /* free space cache stuff */ - spinlock_t tree_lock; - struct rb_root free_space_offset; - u64 free_space; + struct btrfs_free_space_ctl *free_space_ctl; /* block group cache stuff */ struct rb_node cache_node; -- cgit v1.2.3