diff options
Diffstat (limited to 'fs/btrfs/extent_map.h')
| -rw-r--r-- | fs/btrfs/extent_map.h | 8 |
1 files changed, 7 insertions, 1 deletions
diff --git a/fs/btrfs/extent_map.h b/fs/btrfs/extent_map.h index 1195f09761f..679225555f7 100644 --- a/fs/btrfs/extent_map.h +++ b/fs/btrfs/extent_map.h @@ -13,6 +13,7 @@ #define EXTENT_FLAG_COMPRESSED 1 #define EXTENT_FLAG_VACANCY 2 /* no file extent item found */ #define EXTENT_FLAG_PREALLOC 3 /* pre-allocated extent */ +#define EXTENT_FLAG_LOGGING 4 /* Logging this extent */ struct extent_map { struct rb_node rb_node; @@ -20,18 +21,23 @@ struct extent_map { /* all of these are in bytes */ u64 start; u64 len; + u64 mod_start; + u64 mod_len; u64 orig_start; u64 block_start; u64 block_len; + u64 generation; unsigned long flags; struct block_device *bdev; atomic_t refs; unsigned int in_tree; unsigned int compress_type; + struct list_head list; }; struct extent_map_tree { struct rb_root map; + struct list_head modified_extents; rwlock_t lock; }; @@ -60,7 +66,7 @@ struct extent_map *alloc_extent_map(void); void free_extent_map(struct extent_map *em); int __init extent_map_init(void); void extent_map_exit(void); -int unpin_extent_cache(struct extent_map_tree *tree, u64 start, u64 len); +int unpin_extent_cache(struct extent_map_tree *tree, u64 start, u64 len, u64 gen); struct extent_map *search_extent_mapping(struct extent_map_tree *tree, u64 start, u64 len); #endif |