Date: Mon, 06 Jun 2005 17:24:34 +0200 From: des@des.no (=?iso-8859-1?q?Dag-Erling_Sm=F8rgrav?=) To: Scott Long <scottl@samsco.org> Cc: Suleiman Souhlal <ssouhlal@freebsd.org>, Garance A Drosihn <drosih@rpi.edu>, current@freebsd.org, fs@freebsd.org Subject: Re: [PATCH] IFS: Inode FileSystem Message-ID: <86fyvvqzil.fsf@xps.des.no> In-Reply-To: <42A463EF.5060401@samsco.org> (Scott Long's message of "Mon, 06 Jun 2005 08:55:43 -0600") References: <82ACAD58-B179-44E2-852F-60F25C0BBBC1@FreeBSD.org> <20050606033145.GA80739@www.portaone.com> <42A3D6CF.2000504@samsco.org> <0A6C1F19-A734-4EC8-BE97-2D000D189968@FreeBSD.org> <p06210238bec98dba5697@[128.113.24.47]> <42A453B5.3020006@samsco.org> <86oeaj1r2x.fsf@xps.des.no> <42A463EF.5060401@samsco.org>
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Scott Long <scottl@samsco.org> writes: > Dag-Erling Sm=F8rgrav wrote: > > This is primarily an API issue, not a filesystem layout issue. We > > already have at least one filesystem with 64-bit inodes (msdosfs). > What do you mean it's not a layout issue? We can't make incompatible > layout changes whever we feel like it, or else transportability of > filesystems is completely lost and everyone who wants to boot more > than just the Last And Greatest on their system winds up with > unnessary pain. Changing the stat(2) API to support 64-bit inodes does not require us to simultaneously change the on-disk layout of every filesystem we support to use 64-bit inodes. However, if we want to fully support filesystems with 64-bit inodes (such as FAT32, which currently uses a convoluted hack to map the 64-bit offset of a directory entry into a 32-bit inode), we need to change the API. The ironic thing is that we already have a 64-bit stat(2)... for Linux ABI compatibility. DES --=20 Dag-Erling Sm=F8rgrav - des@des.no
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