linux-kernel - Re: [Jfs-discussion] [PATCH 06/11 linux-next] jfs: use magic.h

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Message-ID: <599a7d73-78b0-bc04-0c1b-5fa9b397adb2@oracle.com>
Date:   Sun, 21 May 2017 13:37:32 -0500
From:   Dave Kleikamp <dave.kleikamp@...cle.com>
To:     Fabian Frederick <fabf@...net.be>,
        Alexander Viro <viro@...iv.linux.org.uk>
Cc:     linux-fsdevel@...r.kernel.org,
        jfs-discussion@...ts.sourceforge.net, linux-kernel@...r.kernel.org
Subject: Re: [Jfs-discussion] [PATCH 06/11 linux-next] jfs: use magic.h

On 05/21/2017 10:41 AM, Fabian Frederick wrote:
> Filesystems generally use SUPER_MAGIC values from magic.h
> instead of a local definition.
> 
> Signed-off-by: Fabian Frederick <fabf@...net.be>

Acked-by: Dave Kleikamp <dave.kleikamp@...cle.com>

> ---
>  fs/jfs/jfs_incore.h        | 6 +-----
>  include/uapi/linux/magic.h | 1 +
>  2 files changed, 2 insertions(+), 5 deletions(-)
> 
> diff --git a/fs/jfs/jfs_incore.h b/fs/jfs/jfs_incore.h
> index 1f26d19..64b9152 100644
> --- a/fs/jfs/jfs_incore.h
> +++ b/fs/jfs/jfs_incore.h
> @@ -23,16 +23,12 @@
>  #include <linux/rwsem.h>
>  #include <linux/slab.h>
>  #include <linux/bitops.h>
> +#include <linux/magic.h>
>  #include "jfs_types.h"
>  #include "jfs_xtree.h"
>  #include "jfs_dtree.h"
>  
>  /*
> - * JFS magic number
> - */
> -#define JFS_SUPER_MAGIC 0x3153464a /* "JFS1" */
> -
> -/*
>   * JFS-private inode information
>   */
>  struct jfs_inode_info {
> diff --git a/include/uapi/linux/magic.h b/include/uapi/linux/magic.h
> index b651a02..905eaa2 100644
> --- a/include/uapi/linux/magic.h
> +++ b/include/uapi/linux/magic.h
> @@ -34,6 +34,7 @@
>  #define HPFS_SUPER_MAGIC	0xf995e849
>  #define HUGETLBFS_MAGIC		0x958458f6	/* some random number */
>  #define ISOFS_SUPER_MAGIC	0x9660
> +#define JFS_SUPER_MAGIC		0x3153464a	/* "JFS1" */
>  #define JFFS2_SUPER_MAGIC	0x72b6
>  #define MINIX2_SUPER_MAGIC	0x2468		/* minix v2 fs, 14 char names */
>  #define MINIX2_SUPER_MAGIC2	0x2478		/* minix v2 fs, 30 char names */
>