f2fs: add f2fs_map_blocks
This patch introduces f2fs_map_blocks structure likewise ext4_map_blocks.
Now, f2fs uses f2fs_map_blocks when handling get_block.
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
diff --git a/fs/f2fs/f2fs.h b/fs/f2fs/f2fs.h
index e1dd986..c98454d 100644
--- a/fs/f2fs/f2fs.h
+++ b/fs/f2fs/f2fs.h
@@ -322,6 +322,22 @@
};
/*
+ * This structure is taken from ext4_map_blocks.
+ *
+ * Note that, however, f2fs uses NEW and MAPPED flags for f2fs_map_blocks().
+ */
+#define F2FS_MAP_NEW (1 << BH_New)
+#define F2FS_MAP_MAPPED (1 << BH_Mapped)
+#define F2FS_MAP_FLAGS (F2FS_MAP_NEW | F2FS_MAP_MAPPED)
+
+struct f2fs_map_blocks {
+ block_t m_pblk;
+ block_t m_lblk;
+ unsigned int m_len;
+ unsigned int m_flags;
+};
+
+/*
* i_advise uses FADVISE_XXX_BIT. We can add additional hints later.
*/
#define FADVISE_COLD_BIT 0x01