f2fs: make has_fsynced_inode static

has_fsynced_inode() has no other caller out of node.c, make it static.
Signed-off-by: Chao Yu <chao2.yu@samsung.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>

fs/f2fs/f2fs.h

@@ -1507,7 +1507,6 @@ struct node_info;
 
 bool available_free_memory(struct f2fs_sb_info *, int);
 bool is_checkpointed_node(struct f2fs_sb_info *, nid_t);
-bool has_fsynced_inode(struct f2fs_sb_info *, nid_t);
 bool need_inode_block_update(struct f2fs_sb_info *, nid_t);
 void get_node_info(struct f2fs_sb_info *, nid_t, struct node_info *);
 int get_dnode_of_data(struct dnode_of_data *, pgoff_t, int);

fs/f2fs/node.c

@@ -209,7 +209,7 @@ bool is_checkpointed_node(struct f2fs_sb_info *sbi, nid_t nid)
 	return is_cp;
 }
 
-bool has_fsynced_inode(struct f2fs_sb_info *sbi, nid_t ino)
+static bool has_fsynced_inode(struct f2fs_sb_info *sbi, nid_t ino)
 {
 	struct f2fs_nm_info *nm_i = NM_I(sbi);
 	struct nat_entry *e;