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Re: [RFC 11/32] xfs: convert to struct inode_time

To: Dave Chinner <david@xxxxxxxxxxxxx>
Subject: Re: [RFC 11/32] xfs: convert to struct inode_time
From: Geert Uytterhoeven <geert@xxxxxxxxxxxxxx>
Date: Mon, 2 Jun 2014 09:09:23 +0200
Cc: Nicolas Pitre <nicolas.pitre@xxxxxxxxxx>, Arnd Bergmann <arnd@xxxxxxxx>, "H. Peter Anvin" <hpa@xxxxxxxxx>, "linux-kernel@xxxxxxxxxxxxxxx" <linux-kernel@xxxxxxxxxxxxxxx>, Linux-Arch <linux-arch@xxxxxxxxxxxxxxx>, "Joseph S. Myers" <joseph@xxxxxxxxxxxxxxxx>, John Stultz <john.stultz@xxxxxxxxxx>, Christoph Hellwig <hch@xxxxxxxxxxxxx>, Thomas Gleixner <tglx@xxxxxxxxxxxxx>, Ley Foon Tan <lftan@xxxxxxxxxx>, Linux FS Devel <linux-fsdevel@xxxxxxxxxxxxxxx>, xfs@xxxxxxxxxxx
Delivered-to: xfs@xxxxxxxxxxx
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References: <1401480116-1973111-1-git-send-email-arnd@xxxxxxxx> <538995D4.9050702@xxxxxxxxx> <alpine.LFD.2.11.1405311055410.17310@xxxxxxxxxxx> <8618458.1EVJCoVbkH@wuerfel> <alpine.LFD.2.11.1406012121430.17310@xxxxxxxxxxx> <20140602022211.GN6677@dastard>
Sender: geert.uytterhoeven@xxxxxxxxx
On Mon, Jun 2, 2014 at 4:22 AM, Dave Chinner <david@xxxxxxxxxxxxx> wrote:
> Filesystems place all sorts of userspace visible limits on storage -
> ever tried to create a file >16TB on ext4? The on-disk format
> doesn't support it, so it returns an out of range error (E2BIG, I
> think) if you try. XFS, OTOH, handles this just fine and so it
> continues to work. It's exactly the same with timestamps - there's a
> physical limit to what can sanely be stored in any given filesystem
> and it's an *error condition* to go beyond that limit....

This comparison doesn't fly.
File sizes do not depend on the current time (except for the increase of
megapixels in your new camera ;-).
Writing a 15 GiB file to ext4 is not something that magically stops working



Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@xxxxxxxxxxxxxx

In personal conversations with technical people, I call myself a hacker. But
when I'm talking to journalists I just say "programmer" or something like that.
                                -- Linus Torvalds

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