linux-kernel - Re: [PATCH 3/3] btrfs: set FS_SUPPORTS_SEEK

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Date:	Mon, 20 Apr 2015 15:48:38 -0400
From:	Chris Mason <clm@...com>
To:	NeilBrown <neilb@...e.de>, David Howells <dhowells@...hat.com>,
	Al Viro <viro@...IV.linux.org.uk>, Josef Bacik <jbacik@...com>,
	David Sterba <dsterba@...e.cz>
CC:	<linux-cachefs@...r.kernel.org>,
	Dave Chinner <david@...morbit.com>,
	<linux-kernel@...r.kernel.org>,
	Christoph Hellwig <hch@...radead.org>,
	<linux-fsdevel@...r.kernel.org>, <linux-btrfs@...r.kernel.org>
Subject: Re: [PATCH 3/3] btrfs: set FS_SUPPORTS_SEEK_HOLE flag.

On 04/20/2015 01:27 AM, NeilBrown wrote:
> This allows fscache to cachefiles in a btrfs filesystem.

Thanks for working on this Neil.

Signed-off-by: Chris Mason <clm@...com>

-chris

> 
> Signed-off-by: NeilBrown <neilb@...e.de>
> ---
>  fs/btrfs/super.c |    3 ++-
>  1 file changed, 2 insertions(+), 1 deletion(-)
> 
> diff --git a/fs/btrfs/super.c b/fs/btrfs/super.c
> index 05fef198ff94..d3c5d2b40f8e 100644
> --- a/fs/btrfs/super.c
> +++ b/fs/btrfs/super.c
> @@ -1904,7 +1904,8 @@ static struct file_system_type btrfs_fs_type = {
>  	.name		= "btrfs",
>  	.mount		= btrfs_mount,
>  	.kill_sb	= btrfs_kill_super,
> -	.fs_flags	= FS_REQUIRES_DEV | FS_BINARY_MOUNTDATA,
> +	.fs_flags	= FS_REQUIRES_DEV | FS_BINARY_MOUNTDATA |
> +			  FS_SUPPORTS_SEEK_HOLE,
>  };
>  MODULE_ALIAS_FS("btrfs");
>  
> 
> 

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