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Date:      Sat, 17 Jun 2017 13:24:07 +0300
From:      Konstantin Belousov <kostikbel@gmail.com>
To:        Mark Millard <markmi@dsl-only.net>
Cc:        FreeBSD Current <freebsd-current@freebsd.org>, freebsd-hackers@freebsd.org, FreeBSD PowerPC ML <freebsd-ppc@freebsd.org>
Subject:   Re: INO64 in head: Does sys/boot/common/ufsread.c need its "typedef uint32_t ufs_ino_t;" replaced?
Message-ID:  <20170617102407.GD2088@kib.kiev.ua>
In-Reply-To: <73F88E18-37A1-47C6-8783-F51F131A9671@dsl-only.net>
References:  <3AF2C2DB-1A61-4EC3-BCB7-B05D99273561@dsl-only.net> <20170617024850.GB2088@kib.kiev.ua> <73F88E18-37A1-47C6-8783-F51F131A9671@dsl-only.net>

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On Fri, Jun 16, 2017 at 08:54:10PM -0700, Mark Millard wrote:
> On 2017-Jun-16, at 7:48 PM, Konstantin Belousov <kostikbel at gmail.com> wrote:
> 
> > On Fri, Jun 16, 2017 at 05:01:43PM -0700, Mark Millard wrote:
> >> . . .
> > 
> > UFS uses 32bit inodes, changing to 64bit is both pointless currently, and
> > causes on-disk layout incompatibilities.
> > 
> > As a consequence, use of ino_t (64bit) or uint32_t for inode numbers are
> > almost always interchangeable, unless used for specifying on-disk layout.
> > UFS correctly uses (and was changed to use) uint32_t for inode numbers
> > in the disk-layout definitions.  Other places, which calculate inode
> > numbers from inode block numbers, or do some other calculations with
> > inodes, are fine with either width.
> > 
> > That is, I believe that all instances which I looked at during the
> > ino64 preparation are fine.
> 
> Thanks for letting me know --and good to know.
> 
> I've added a note to the bugzilla report of the failed
> linking of boot1.elf for powerpc and powerpc64 that
> you have indicated that if the __udivdi3 is supplied to
> allow the linking to complete for builds based on clang
> then the result should operate okay for the mix of types.
> (The report is bugzilla 220024 .)
I never said that.



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