linux-kernel - Re: [PATCH] ecryptfs: set s_blocksize from lower fs in sb

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Message-ID: <20071214154343.GA10989@localhost.austin.ibm.com>
Date:	Fri, 14 Dec 2007 09:43:43 -0600
From:	Michael Halcrow <mhalcrow@...ibm.com>
To:	Eric Sandeen <sandeen@...hat.com>
Cc:	linux-kernel Mailing List <linux-kernel@...r.kernel.org>,
	Andrew Morton <akpm@...ux-foundation.org>
Subject: Re: [PATCH] ecryptfs: set s_blocksize from lower fs in sb

On Fri, Dec 14, 2007 at 09:30:26AM -0600, Eric Sandeen wrote:
> eCryptfs wasn't setting s_blocksize in it's superblock; just pick
> it up from the lower FS.  Having an s_blocksize of 0 made things
> like "filefrag" which call FIGETBSZ unhappy.
> 
> Signed-off-by: Eric Sandeen <sandeen@...hat.com>

Acked-by: Mike Halcrow <mhalcrow@...ibm.com>

> 
> ---
> 
> Index: linux-2.6.24-rc3/fs/ecryptfs/main.c
> ===================================================================
> --- linux-2.6.24-rc3.orig/fs/ecryptfs/main.c
> +++ linux-2.6.24-rc3/fs/ecryptfs/main.c
> @@ -523,6 +523,7 @@ static int ecryptfs_read_super(struct su
>  	lower_mnt = nd.mnt;
>  	ecryptfs_set_superblock_lower(sb, lower_root->d_sb);
>  	sb->s_maxbytes = lower_root->d_sb->s_maxbytes;
> +	sb->s_blocksize = lower_root->d_sb->s_blocksize;
>  	ecryptfs_set_dentry_lower(sb->s_root, lower_root);
>  	ecryptfs_set_dentry_lower_mnt(sb->s_root, lower_mnt);
>  	rc = ecryptfs_interpose(lower_root, sb->s_root, sb, 0);
> 
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