f2fs: improve shrink performance of extent nodes

[mirror_ubuntu-zesty-kernel.git] / fs / f2fs / f2fs.h

diff --git a/fs/f2fs/f2fs.h b/fs/f2fs/f2fs.h
index ff79054c6cf6a5bfe254abaf203ae94acd44739b..4e7eab9f3f5afdf61cad38c7724b8a500268b17f 100644 (file)
--- a/fs/f2fs/f2fs.h
+++ b/fs/f2fs/f2fs.h
@@ -354,6 +354,7 @@ struct extent_node {
        struct rb_node rb_node;         /* rb node located in rb-tree */
        struct list_head list;          /* node in global extent list of sbi */
        struct extent_info ei;          /* extent info */
+       struct extent_tree *et;         /* extent tree pointer */
 };
 
 struct extent_tree {
@@ -515,6 +516,7 @@ struct f2fs_nm_info {
        nid_t next_scan_nid;            /* the next nid to be scanned */
        unsigned int ram_thresh;        /* control the memory footprint */
        unsigned int ra_nid_pages;      /* # of nid pages to be readaheaded */
+       unsigned int dirty_nats_ratio;  /* control dirty nats ratio threshold */
 
        /* NAT cache management */
        struct radix_tree_root nat_root;/* root of the nat entry cache */
@@ -1836,7 +1838,7 @@ void f2fs_replace_block(struct f2fs_sb_info *, struct dnode_of_data *,
                                block_t, block_t, unsigned char, bool);
 void allocate_data_block(struct f2fs_sb_info *, struct page *,
                block_t, block_t *, struct f2fs_summary *, int);
-void f2fs_wait_on_page_writeback(struct page *, enum page_type);
+void f2fs_wait_on_page_writeback(struct page *, enum page_type, bool);
 void f2fs_wait_on_encrypted_page_writeback(struct f2fs_sb_info *, block_t);
 void write_data_summaries(struct f2fs_sb_info *, block_t);
 void write_node_summaries(struct f2fs_sb_info *, block_t);
@@ -1880,6 +1882,7 @@ void destroy_checkpoint_caches(void);
 /*
  * data.c
  */
+bool is_merged_page(struct f2fs_sb_info *, struct page *, enum page_type);
 void f2fs_submit_merged_bio(struct f2fs_sb_info *, enum page_type, int);
 int f2fs_submit_page_bio(struct f2fs_io_info *);
 void f2fs_submit_page_mbio(struct f2fs_io_info *);