[PATCH 1/2] f2fs: clean up structure extent_node

[Chao Yu]

The union in struct extent_node wass only to indicate below fields

        struct rb_node rb_node;
        union {
                struct {
                        unsigned int fofs;
                        unsigned int len;
                ...
        ...

can be parsed as fields in struct rb_entry, but they were never be
used explicitly before, so let's remove them for cleanup.

Signed-off-by: Chao Yu <yuch...@huawei.com>
---
 fs/f2fs/f2fs.h | 12 ++----------
 1 file changed, 2 insertions(+), 10 deletions(-)

diff --git a/fs/f2fs/f2fs.h b/fs/f2fs/f2fs.h
index ab69c7454a05..a92e5ed78f53 100644
--- a/fs/f2fs/f2fs.h
+++ b/fs/f2fs/f2fs.h
@@ -559,16 +559,8 @@ struct extent_info {
 };
 
 struct extent_node {
-       struct rb_node rb_node;
-       union {
-               struct {
-                       unsigned int fofs;
-                       unsigned int len;
-                       u32 blk;
-               };
-               struct extent_info ei;  /* extent info */
-
-       };
+       struct rb_node rb_node;         /* rb node located in rb-tree */
+       struct extent_info ei;          /* extent info */
        struct list_head list;          /* node in global extent list of sbi */
        struct extent_tree *et;         /* extent tree pointer */
 };
-- 
2.18.0.rc1