Date: Sat, 06 Jul 2002 16:01:18 -0700 From: Terry Lambert <tlambert2@mindspring.com> To: Darren Pilgrim <dmp@pantherdragon.org> Cc: ticso@cicely.de, freebsd-hackers@FreeBSD.ORG Subject: Re: How does swap work address spacewise? Message-ID: <3D2776BE.A39A1110@mindspring.com> References: <20020705113532.GA11273@atrbg11.informatik.tu-muenchen.de> <20020705133515.GA295@HAL9000.wox.org> <20020705133837.GA513@HAL9000.wox.org> <20020705234126.GA12183@atrbg11.informatik.tu-muenchen.de> <3D2640A7.3EA2236B@pantherdragon.org> <20020706020656.GL48977@cicely5.cicely.de> <3D2762FE.9D9E0378@pantherdragon.org> <20020706220720.GG23704@cicely5.cicely.de> <3D277274.B5F3CE58@pantherdragon.org>
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Darren Pilgrim wrote: > > > I thought the limit for filesystems was 2TB? > > > > The Blocknumber is signed that gives: > > 2^31 * 512Bytes > > Why sign the blocknumber? LBA uses an unsigned 32-bit integer, > allowing 2TB, and IIRC SCSI uses an unsigned integer as well (though I > can't remember if that one is 32 or 48 bits, or if they've gotten to > 64 bits by now). To differentiate between direct (positive) and indirect (negative) blocks within the inode, and within an indirect block. -- Terry To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-hackers" in the body of the message
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