[02/21] erofs: on-disk format should have explicitly assigned numbers
diff mbox series

Message ID 20190901055130.30572-3-hsiangkao@aol.com
State New
Headers show
Series
  • erofs: patchset addressing Christoph's comments
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Commit Message

Gao Xiang Sept. 1, 2019, 5:51 a.m. UTC
From: Gao Xiang <gaoxiang25@huawei.com>

As Christoph claimed [1], on-disk format should have
explicitly assigned numbers. I have to change it.

[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>
---
 fs/erofs/erofs_fs.h | 18 +++++++++---------
 1 file changed, 9 insertions(+), 9 deletions(-)

Comments

Christoph Hellwig Sept. 2, 2019, 12:05 p.m. UTC | #1
On Sun, Sep 01, 2019 at 01:51:11PM +0800, Gao Xiang wrote:
>  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
>  };

This all looks ok - it somtimes also helps to have a comment near
the numbers to indicate where they are stored, must that isn't a must.

Patch
diff mbox series

diff --git a/fs/erofs/erofs_fs.h b/fs/erofs/erofs_fs.h
index 49335fff9d65..d1f152a3670a 100644
--- 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
 };