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Date: Tue, 30 Jan 2018 10:15:43 -0500
From: Theodore Ts'o <tytso@mit.edu>
To: Jeff Layton <jlayton@redhat.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>,
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Subject: Re: [GIT PULL] inode->i_version rework for v4.16
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On Tue, Jan 30, 2018 at 07:05:48AM -0500, Jeff Layton wrote:
> 
> I want to make sure I understand what's actually broken here thoug. Is
> it only broken when the two values are more than 2**63 apart, or is
> there something else more fundamentally wrong here?

The other problem is that returning a s64 (or a u64) is extremely
inefficient on a 32-bit platform.  So in general, it's better to avoid
returning a 64-bit type unless it's really necessary....

						- Ted