f2fs: use rb_*_cached friends

As rbtree supports caching leftmost node natively, update f2fs codes
to use rb_*_cached helpers to speed up leftmost node visiting.

Signed-off-by: Chao Yu <yuchao0@huawei.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>

1 files changed, 9 insertions, 8 deletions

diff --git a/fs/f2fs/f2fs.h b/fs/f2fs/f2fs.h
index bf81c60e12b8..829355dc469b 100644
--- a/fs/f2fs/f2fs.h
+++ b/fs/f2fs/f2fs.h
@@ -328,7 +328,7 @@ struct discard_cmd_control {
 	atomic_t issued_discard;		/* # of issued discard */
 	atomic_t issing_discard;		/* # of issing discard */
 	atomic_t discard_cmd_cnt;		/* # of cached cmd count */
-	struct rb_root root;			/* root of discard rb-tree */
+	struct rb_root_cached root;		/* root of discard rb-tree */
 	bool rbtree_check;			/* config for consistence check */
 };
 
@@ -570,7 +570,7 @@ struct extent_node {
 
 struct extent_tree {
 	nid_t ino;			/* inode number */
-	struct rb_root root;		/* root of extent info rb-tree */
+	struct rb_root_cached root;	/* root of extent info rb-tree */
 	struct extent_node *cached_en;	/* recently accessed extent node */
 	struct extent_info largest;	/* largested extent info */
 	struct list_head list;		/* to be used by sbi->zombie_list */
@@ -3368,18 +3368,19 @@ void f2fs_leave_shrinker(struct f2fs_sb_info *sbi);
 /*
  * extent_cache.c
  */
-struct rb_entry *f2fs_lookup_rb_tree(struct rb_root *root,
+struct rb_entry *f2fs_lookup_rb_tree(struct rb_root_cached *root,
 				struct rb_entry *cached_re, unsigned int ofs);
 struct rb_node **f2fs_lookup_rb_tree_for_insert(struct f2fs_sb_info *sbi,
-				struct rb_root *root, struct rb_node **parent,
-				unsigned int ofs);
-struct rb_entry *f2fs_lookup_rb_tree_ret(struct rb_root *root,
+				struct rb_root_cached *root,
+				struct rb_node **parent,
+				unsigned int ofs, bool *leftmost);
+struct rb_entry *f2fs_lookup_rb_tree_ret(struct rb_root_cached *root,
 		struct rb_entry *cached_re, unsigned int ofs,
 		struct rb_entry **prev_entry, struct rb_entry **next_entry,
 		struct rb_node ***insert_p, struct rb_node **insert_parent,
-		bool force);
+		bool force, bool *leftmost);
 bool f2fs_check_rb_tree_consistence(struct f2fs_sb_info *sbi,
-						struct rb_root *root);
+						struct rb_root_cached *root);
 unsigned int f2fs_shrink_extent_tree(struct f2fs_sb_info *sbi, int nr_shrink);
 bool f2fs_init_extent_tree(struct inode *inode, struct f2fs_extent *i_ext);
 void f2fs_drop_extent_tree(struct inode *inode);