[v2,3/3] btrfs: using enum to replace macro
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Message ID 20191010075958.28346-3-cgxu519@mykernel.net
State New
Headers show
Series
  • [v2,1/3] btrfs: remove unnecessary hash_init()
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Commit Message

Chengguang Xu Oct. 10, 2019, 7:59 a.m. UTC
Using enum to replace macro definition
of extent types.

Signed-off-by: Chengguang Xu <cgxu519@mykernel.net>
---
v1->v2:
- Explicitly specify value for enum.
- Change the name BTRFS_FILE_EXTENT_TYPES to BTRFS_NR_FILE_EXTENT_TYPES.

 fs/btrfs/tree-checker.c         |  4 ++--
 include/uapi/linux/btrfs_tree.h | 10 ++++++----
 2 files changed, 8 insertions(+), 6 deletions(-)

Patch
diff mbox series

diff --git a/fs/btrfs/tree-checker.c b/fs/btrfs/tree-checker.c
index 92bde1d5b5d7..0e71085c008a 100644
--- a/fs/btrfs/tree-checker.c
+++ b/fs/btrfs/tree-checker.c
@@ -143,11 +143,11 @@  static int check_extent_data_item(struct extent_buffer *leaf,
 
 	fi = btrfs_item_ptr(leaf, slot, struct btrfs_file_extent_item);
 
-	if (btrfs_file_extent_type(leaf, fi) > BTRFS_FILE_EXTENT_TYPES) {
+	if (btrfs_file_extent_type(leaf, fi) >= BTRFS_NR_FILE_EXTENT_TYPES) {
 		file_extent_err(leaf, slot,
 		"invalid type for file extent, have %u expect range [0, %u]",
 			btrfs_file_extent_type(leaf, fi),
-			BTRFS_FILE_EXTENT_TYPES);
+			BTRFS_NR_FILE_EXTENT_TYPES - 1);
 		return -EUCLEAN;
 	}
 
diff --git a/include/uapi/linux/btrfs_tree.h b/include/uapi/linux/btrfs_tree.h
index b65c7ee75bc7..4c8f9ea73191 100644
--- a/include/uapi/linux/btrfs_tree.h
+++ b/include/uapi/linux/btrfs_tree.h
@@ -737,10 +737,12 @@  struct btrfs_balance_item {
 	__le64 unused[4];
 } __attribute__ ((__packed__));
 
-#define BTRFS_FILE_EXTENT_INLINE 0
-#define BTRFS_FILE_EXTENT_REG 1
-#define BTRFS_FILE_EXTENT_PREALLOC 2
-#define BTRFS_FILE_EXTENT_TYPES	2
+enum {
+	BTRFS_FILE_EXTENT_INLINE = 0,
+	BTRFS_FILE_EXTENT_REG = 1,
+	BTRFS_FILE_EXTENT_PREALLOC = 2,
+	BTRFS_NR_FILE_EXTENT_TYPES = 3
+};
 
 struct btrfs_file_extent_item {
 	/*