linux-ext4 - Re: [PATCH][10/28] e2fsprogs-uninit.patch

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Message-ID: <20080315194120.GI27847@mit.edu>
Date:	Sat, 15 Mar 2008 15:41:20 -0400
From:	Theodore Tso <tytso@....edu>
To:	Andreas Dilger <adilger@....com>
Cc:	linux-ext4@...r.kernel.org
Subject: Re: [PATCH][10/28] e2fsprogs-uninit.patch

What is the intended use of the SF_DO_CSUM flag?  I see where it is
defined, and where it gets sets, but as far as I can tell nothing
actually tests for it or uses it.

	 				- Ted


On Sat, Feb 02, 2008 at 01:34:44AM -0700, Andreas Dilger wrote:
> Index: e2fsprogs-1.40.5/lib/ext2fs/ext2fs.h
>
> +#define EXT2_SF_DO_CSUM		0x0020
>

> Index: e2fsprogs-1.40.5/lib/ext2fs/inode.c
> ===================================================================
> --- e2fsprogs-1.40.5.orig/lib/ext2fs/inode.c
> +++ e2fsprogs-1.40.5/lib/ext2fs/inode.c
> @@ -167,6 +167,9 @@ errcode_t ext2fs_open_inode_scan(ext2_fi
>  	if (EXT2_HAS_COMPAT_FEATURE(fs->super, 
>  				    EXT2_FEATURE_COMPAT_LAZY_BG))
>  		scan->scan_flags |= EXT2_SF_DO_LAZY;
> +	if (EXT2_HAS_RO_COMPAT_FEATURE(fs->super,
> +				       EXT4_FEATURE_RO_COMPAT_GDT_CSUM))
> +		scan->scan_flags |= EXT2_SF_DO_LAZY | EXT2_SF_DO_CSUM;

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