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-rw-r--r--extent_io.h4
1 files changed, 4 insertions, 0 deletions
diff --git a/extent_io.h b/extent_io.h
index e6174894..17a4a829 100644
--- a/extent_io.h
+++ b/extent_io.h
@@ -75,6 +75,7 @@ struct extent_io_tree {
struct cache_tree cache;
struct list_head lru;
u64 cache_size;
+ u64 max_cache_size;
};
struct extent_state {
@@ -106,6 +107,8 @@ static inline void extent_buffer_get(struct extent_buffer *eb)
}
void extent_io_tree_init(struct extent_io_tree *tree);
+void extent_io_tree_init_cache_max(struct extent_io_tree *tree,
+ u64 max_cache_size);
void extent_io_tree_cleanup(struct extent_io_tree *tree);
int set_extent_bits(struct extent_io_tree *tree, u64 start, u64 end, int bits);
int clear_extent_bits(struct extent_io_tree *tree, u64 start, u64 end, int bits);
@@ -146,6 +149,7 @@ struct extent_buffer *alloc_extent_buffer(struct extent_io_tree *tree,
u64 bytenr, u32 blocksize);
struct extent_buffer *btrfs_clone_extent_buffer(struct extent_buffer *src);
void free_extent_buffer(struct extent_buffer *eb);
+void free_extent_buffer_nocache(struct extent_buffer *eb);
int read_extent_from_disk(struct extent_buffer *eb,
unsigned long offset, unsigned long len);
int write_extent_to_disk(struct extent_buffer *eb);