f2fs: introduce a new direct_IO write path

[GitHub/exynos8895/android_kernel_samsung_universal8895.git] / fs / f2fs / f2fs.h

diff --git a/fs/f2fs/f2fs.h b/fs/f2fs/f2fs.h
index dca18b3bcc62176ce3af61793abc7f729fde4df6..8cbc5a6bf484f1860d2ae44d94a7f560fddff6fb 100644 (file)
--- a/fs/f2fs/f2fs.h
+++ b/fs/f2fs/f2fs.h
@@ -325,6 +325,9 @@ struct f2fs_sm_info {
        struct list_head discard_list;          /* 4KB discard list */
        int nr_discards;                        /* # of discards in the list */
        int max_discards;                       /* max. discards to be issued */
+
+       unsigned int ipu_policy;        /* in-place-update policy */
+       unsigned int min_ipu_util;      /* in-place-update threshold */
 };
 
 /*
@@ -364,10 +367,18 @@ enum page_type {
        META_FLUSH,
 };
 
+struct f2fs_io_info {
+       enum page_type type;            /* contains DATA/NODE/META/META_FLUSH */
+       int rw;                         /* contains R/RS/W/WS */
+       int rw_flag;                    /* contains REQ_META/REQ_PRIO */
+};
+
 #define is_read_io(rw) (((rw) & 1) == READ)
 struct f2fs_bio_info {
+       struct f2fs_sb_info *sbi;       /* f2fs superblock */
        struct bio *bio;                /* bios to merge */
        sector_t last_block_in_bio;     /* last block number */
+       struct f2fs_io_info fio;        /* store buffered io info. */
        struct mutex io_mutex;          /* mutex for bio */
 };
 
@@ -1097,13 +1108,15 @@ struct page *get_sum_page(struct f2fs_sb_info *, unsigned int);
 void write_meta_page(struct f2fs_sb_info *, struct page *);
 void write_node_page(struct f2fs_sb_info *, struct page *, unsigned int,
                                        block_t, block_t *);
-void write_data_page(struct inode *, struct page *, struct dnode_of_data*,
-                                       block_t, block_t *);
-void rewrite_data_page(struct f2fs_sb_info *, struct page *, block_t);
+void write_data_page(struct page *, struct dnode_of_data *, block_t *,
+                                       struct f2fs_io_info *);
+void rewrite_data_page(struct page *, block_t, struct f2fs_io_info *);
 void recover_data_page(struct f2fs_sb_info *, struct page *,
                                struct f2fs_summary *, block_t, block_t);
 void rewrite_node_page(struct f2fs_sb_info *, struct page *,
                                struct f2fs_summary *, block_t, block_t);
+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, bool);
 void write_data_summaries(struct f2fs_sb_info *, block_t);
 void write_node_summaries(struct f2fs_sb_info *, block_t);
@@ -1140,17 +1153,17 @@ void destroy_checkpoint_caches(void);
 /*
  * data.c
  */
-void f2fs_submit_merged_bio(struct f2fs_sb_info *, enum page_type, bool, int);
+void f2fs_submit_merged_bio(struct f2fs_sb_info *, enum page_type, int);
 int f2fs_submit_page_bio(struct f2fs_sb_info *, struct page *, block_t, int);
 void f2fs_submit_page_mbio(struct f2fs_sb_info *, struct page *, block_t,
-                                                       enum page_type, int);
+                                               struct f2fs_io_info *);
 int reserve_new_block(struct dnode_of_data *);
 int f2fs_reserve_block(struct dnode_of_data *, pgoff_t);
 void update_extent_cache(block_t, struct dnode_of_data *);
 struct page *find_data_page(struct inode *, pgoff_t, bool);
 struct page *get_lock_data_page(struct inode *, pgoff_t);
 struct page *get_new_data_page(struct inode *, struct page *, pgoff_t, bool);
-int do_write_data_page(struct page *);
+int do_write_data_page(struct page *, struct f2fs_io_info *);
 
 /*
  * gc.c