erofs: on-disk format should have explicitly assigned numbers

As Christoph suggested [1], on-disk format should have
explicitly assigned numbers.

[1] https://lore.kernel.org/r/20190829095954.GB20598@infradead.org/
Reported-by: Christoph Hellwig <hch@infradead.org>
Signed-off-by: Gao Xiang <gaoxiang25@huawei.com>
Link: https://lore.kernel.org/r/20190904020912.63925-3-gaoxiang25@huawei.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/fs/erofs/erofs_fs.h b/fs/erofs/erofs_fs.h
index 49335ff..d1f152a 100644 (file)
--- a/fs/erofs/erofs_fs.h
+++ b/fs/erofs/erofs_fs.h
@@ -53,10 +53,10 @@ struct erofs_super_block {
  * 4~7 - reserved
  */
 enum {
-       EROFS_INODE_FLAT_PLAIN,
-       EROFS_INODE_FLAT_COMPRESSION_LEGACY,
-       EROFS_INODE_FLAT_INLINE,
-       EROFS_INODE_FLAT_COMPRESSION,
+       EROFS_INODE_FLAT_PLAIN                  = 0,
+       EROFS_INODE_FLAT_COMPRESSION_LEGACY     = 1,
+       EROFS_INODE_FLAT_INLINE                 = 2,
+       EROFS_INODE_FLAT_COMPRESSION            = 3,
        EROFS_INODE_LAYOUT_MAX
 };
 
@@ -184,7 +184,7 @@ struct erofs_xattr_entry {
 
 /* available compression algorithm types */
 enum {
-       Z_EROFS_COMPRESSION_LZ4,
+       Z_EROFS_COMPRESSION_LZ4 = 0,
        Z_EROFS_COMPRESSION_MAX
 };
 
@@ -242,10 +242,10 @@ struct z_erofs_map_header {
  *                (di_advise could be 0, 1 or 2)
  */
 enum {
-       Z_EROFS_VLE_CLUSTER_TYPE_PLAIN,
-       Z_EROFS_VLE_CLUSTER_TYPE_HEAD,
-       Z_EROFS_VLE_CLUSTER_TYPE_NONHEAD,
-       Z_EROFS_VLE_CLUSTER_TYPE_RESERVED,
+       Z_EROFS_VLE_CLUSTER_TYPE_PLAIN          = 0,
+       Z_EROFS_VLE_CLUSTER_TYPE_HEAD           = 1,
+       Z_EROFS_VLE_CLUSTER_TYPE_NONHEAD        = 2,
+       Z_EROFS_VLE_CLUSTER_TYPE_RESERVED       = 3,
        Z_EROFS_VLE_CLUSTER_TYPE_MAX
 };