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Re: [PATCH] xfs: require 64-bit sector_t

To: Christoph Hellwig <hch@xxxxxxxxxxxxx>
Subject: Re: [PATCH] xfs: require 64-bit sector_t
From: Ben Myers <bpm@xxxxxxx>
Date: Fri, 13 Dec 2013 15:37:01 -0600
Cc: xfs@xxxxxxxxxxx
Delivered-to: xfs@xxxxxxxxxxx
In-reply-to: <20131114164603.GA13628@xxxxxxxxxxxxx>
References: <20131114164603.GA13628@xxxxxxxxxxxxx>
User-agent: Mutt/1.5.20 (2009-06-14)
Hi Christoph,

On Thu, Nov 14, 2013 at 08:46:03AM -0800, Christoph Hellwig wrote:
> Trying to support tiny disks only and saving a bit memory might have
> made sense on an SGI O2 15 years ago, but is pretty pointless today.
> Remove the rarely tested codepath that uses various smaller in-memory
> types to reduce our test matrix and make the codebase a little bit
> smaller and less complicated.
> Signed-off-by: Christoph Hellwig <hch@xxxxxx>
> diff --git a/fs/xfs/Kconfig b/fs/xfs/Kconfig
> index 399e8ce..5d47b4d 100644
> --- a/fs/xfs/Kconfig
> +++ b/fs/xfs/Kconfig
> @@ -1,6 +1,7 @@
>  config XFS_FS
>       tristate "XFS filesystem support"
>       depends on BLOCK
> +     depends on (64BIT || LBDAF)

There are quite a few 32 bit arches in use today.  We need to continue to
support them in XFS as long as they are supported by the kernel.  Unless I have
misunderstood what you are suggesting, I believe the answer to this patch must
be a firm 'no'.


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