f2fs: add bitmaps for empty or full NAT blocks

[linux-block.git] / include / linux / f2fs_fs.h

diff --git a/include/linux/f2fs_fs.h b/include/linux/f2fs_fs.h
index cea41a124a8010ed6d16022c22a789c9b40bb8c6..1c92ace2e8f8e3ab16f28813fe8beb1734972e53 100644 (file)
--- a/include/linux/f2fs_fs.h
+++ b/include/linux/f2fs_fs.h
@@ -36,6 +36,12 @@
 #define F2FS_NODE_INO(sbi)     (sbi->node_ino_num)
 #define F2FS_META_INO(sbi)     (sbi->meta_ino_num)
 
+#define F2FS_IO_SIZE(sbi)      (1 << (sbi)->write_io_size_bits) /* Blocks */
+#define F2FS_IO_SIZE_KB(sbi)   (1 << ((sbi)->write_io_size_bits + 2)) /* KB */
+#define F2FS_IO_SIZE_BYTES(sbi)        (1 << ((sbi)->write_io_size_bits + 12)) /* B */
+#define F2FS_IO_SIZE_BITS(sbi) ((sbi)->write_io_size_bits) /* power of 2 */
+#define F2FS_IO_SIZE_MASK(sbi) (F2FS_IO_SIZE(sbi) - 1)
+
 /* This flag is used by node and meta inodes, and by recovery */
 #define GFP_F2FS_ZERO          (GFP_NOFS | __GFP_ZERO)
 #define GFP_F2FS_HIGH_ZERO     (GFP_NOFS | __GFP_ZERO | __GFP_HIGHMEM)
@@ -108,6 +114,7 @@ struct f2fs_super_block {
 /*
  * For checkpoint
  */
+#define CP_NAT_BITS_FLAG       0x00000080
 #define CP_CRC_RECOVERY_FLAG   0x00000040
 #define CP_FASTBOOT_FLAG       0x00000020
 #define CP_FSCK_FLAG           0x00000010