but as the size of treenode is 32bytes and one treenode contains 8 or 16 physical chunk id. if one chunk equals one page that has 2kb data,so that one file can be as large as 2^16 * 2KB=128MB. that's what i mean. what does chunk_group and tnode_size used for? i'm confused about tnode_size and chunk_group in the sourcecode. 2011/12/5 > Send yaffs mailing list submissions to > yaffs@lists.aleph1.co.uk > > To subscribe or unsubscribe via the World Wide Web, visit > http://lists.aleph1.co.uk/cgi-bin/mailman/listinfo/yaffs > or, via email, send a message with subject or body 'help' to > yaffs-request@lists.aleph1.co.uk > > You can reach the person managing the list at > yaffs-owner@lists.aleph1.co.uk > > When replying, please edit your Subject line so it is more specific > than "Re: Contents of yaffs digest..." > > > Today's Topics: > > 1. Re: how to extend the size of a file and the number of files? > (Charles Manning) > > > ---------------------------------------------------------------------- > > Message: 1 > Date: Mon, 5 Dec 2011 07:33:50 +1300 > From: Charles Manning > To: yaffs@lists.aleph1.co.uk > Subject: Re: [Yaffs] how to extend the size of a file and the number > of files? > Message-ID: <201112050733.50893.manningc2@actrix.gen.nz> > Content-Type: text/plain; charset="utf-8" > > On Friday 02 December 2011 19:24:45 ?? wrote: > > as source code shows,in default mode,yaffs can only locate 128M flash > > memory. > > I don't know how you figure that out. yaffs can access many Gbytes of > flash no > problem. > > > To extend this limition,can use chunk_group or modify tnodesize. > > but how? and what's the limition? > > You don't need to do anything. yaffs already handles this. > > -- Charles > > > > > > ------------------------------ > > _______________________________________________ > yaffs mailing list > yaffs@lists.aleph1.co.uk > http://lists.aleph1.co.uk/cgi-bin/mailman/listinfo/yaffs > > > End of yaffs Digest, Vol 79, Issue 4 > ************************************ > -- Best wishes for you, Ezio.