Btrfs: improve the performance of the csums lookup

[firefly-linux-kernel-4.4.55.git] / fs / btrfs / extent_io.h

diff --git a/fs/btrfs/extent_io.h b/fs/btrfs/extent_io.h
index 6068a1985560eed72a8df42fa528377c3584c93a..db009d80bef47813076aad3a53ab8316b2a4a13f 100644 (file)
--- a/fs/btrfs/extent_io.h
+++ b/fs/btrfs/extent_io.h
@@ -261,6 +261,10 @@ int extent_readpages(struct extent_io_tree *tree,
 int extent_fiemap(struct inode *inode, struct fiemap_extent_info *fieinfo,
                __u64 start, __u64 len, get_extent_t *get_extent);
 int set_state_private(struct extent_io_tree *tree, u64 start, u64 private);
+void extent_cache_csums_dio(struct extent_io_tree *tree, u64 start, u32 csums[],
+                           int count);
+void extent_cache_csums(struct extent_io_tree *tree, struct bio *bio,
+                       int bvec_index, u32 csums[], int count);
 int get_state_private(struct extent_io_tree *tree, u64 start, u64 *private);
 void set_page_extent_mapped(struct page *page);
 
@@ -325,6 +329,8 @@ int map_private_extent_buffer(struct extent_buffer *eb, unsigned long offset,
                      unsigned long *map_len);
 int extent_range_uptodate(struct extent_io_tree *tree,
                          u64 start, u64 end);
+int extent_range_clear_dirty_for_io(struct inode *inode, u64 start, u64 end);
+int extent_range_redirty_for_io(struct inode *inode, u64 start, u64 end);
 int extent_clear_unlock_delalloc(struct inode *inode,
                                struct extent_io_tree *tree,
                                u64 start, u64 end, struct page *locked_page,