ext2fs: add new APIs needed for fast commits

[tools/e2fsprogs.git] / lib / ext2fs / ext2fs.h

diff --git a/lib/ext2fs/ext2fs.h b/lib/ext2fs/ext2fs.h
index 5955c3a..7a25e0e 100644 (file)
--- a/lib/ext2fs/ext2fs.h
+++ b/lib/ext2fs/ext2fs.h
@@ -221,6 +221,12 @@ typedef struct ext2_file *ext2_file_t;
 #define EXT2_MKJOURNAL_LAZYINIT        0x0000002 /* don't zero journal inode before use*/
 #define EXT2_MKJOURNAL_NO_MNT_CHECK 0x0000004 /* don't check mount status */
 
+/*
+ * Normal journal area size to fast commit area size ratio. This is used to
+ * set default size of fast commit area.
+ */
+#define EXT2_JOURNAL_TO_FC_BLKS_RATIO          64
+
 struct blk_alloc_ctx;
 struct opaque_ext2_group_desc;
 
@@ -689,6 +695,14 @@ struct ext2_xattr_handle;
 #define XATTR_CHANGED  2
 
 /*
+ * flags for ext2fs_rw_bitmaps()
+ */
+#define EXT2FS_BITMAPS_WRITE           0x0001
+#define EXT2FS_BITMAPS_BLOCK           0x0002
+#define EXT2FS_BITMAPS_INODE           0x0004
+#define EXT2FS_BITMAPS_VALID_FLAGS     0x0007
+
+/*
  * function prototypes
  */
 static inline int ext2fs_has_group_desc_csum(ext2_filsys fs)
@@ -1327,6 +1341,10 @@ extern errcode_t ext2fs_extent_fix_parents(ext2_extent_handle_t handle);
 extern size_t ext2fs_max_extent_depth(ext2_extent_handle_t handle);
 extern errcode_t ext2fs_fix_extents_checksums(ext2_filsys fs, ext2_ino_t ino,
                                              struct ext2_inode *inode);
+extern errcode_t ext2fs_count_blocks(ext2_filsys fs, ext2_ino_t ino,
+                                    struct ext2_inode *inode, blk64_t *ret_count);
+extern errcode_t ext2fs_decode_extent(struct ext2fs_extent *to, void *from,
+                                     int len);
 
 /* fallocate.c */
 #define EXT2_FALLOCATE_ZERO_BLOCKS     (0x1)
@@ -1485,6 +1503,7 @@ errcode_t ext2fs_write_ind_block(ext2_filsys fs, blk_t blk, void *buf);
 extern errcode_t ext2fs_initialize(const char *name, int flags,
                                   struct ext2_super_block *param,
                                   io_manager manager, ext2_filsys *ret_fs);
+extern errcode_t ext2fs_calculate_summary_stats(ext2_filsys fs, int super_only);
 
 /* icount.c */
 extern void ext2fs_free_icount(ext2_icount_t icount);
@@ -1620,6 +1639,12 @@ extern errcode_t ext2fs_mkdir(ext2_filsys fs, ext2_ino_t parent, ext2_ino_t inum
                              const char *name);
 
 /* mkjournal.c */
+struct ext2fs_journal_params {
+       blk_t num_journal_blocks;
+       blk_t num_fc_blocks;
+};
+extern errcode_t ext2fs_get_journal_params(
+               struct ext2fs_journal_params *params, ext2_filsys fs);
 extern errcode_t ext2fs_zero_blocks(ext2_filsys fs, blk_t blk, int num,
                                    blk_t *ret_blk, int *ret_count);
 extern errcode_t ext2fs_zero_blocks2(ext2_filsys fs, blk64_t blk, int num,
@@ -1627,12 +1652,18 @@ extern errcode_t ext2fs_zero_blocks2(ext2_filsys fs, blk64_t blk, int num,
 extern errcode_t ext2fs_create_journal_superblock(ext2_filsys fs,
                                                  __u32 num_blocks, int flags,
                                                  char  **ret_jsb);
+extern errcode_t ext2fs_create_journal_superblock2(ext2_filsys fs,
+                                                 struct ext2fs_journal_params *params,
+                                                 int flags, char  **ret_jsb);
 extern errcode_t ext2fs_add_journal_device(ext2_filsys fs,
                                           ext2_filsys journal_dev);
 extern errcode_t ext2fs_add_journal_inode(ext2_filsys fs, blk_t num_blocks,
                                          int flags);
 extern errcode_t ext2fs_add_journal_inode2(ext2_filsys fs, blk_t num_blocks,
                                           blk64_t goal, int flags);
+extern errcode_t ext2fs_add_journal_inode3(ext2_filsys fs,
+                                   struct ext2fs_journal_params *params,
+                                   blk64_t goal, int flags);
 extern int ext2fs_default_journal_size(__u64 num_blocks);
 extern int ext2fs_journal_sb_start(int blocksize);