Date: Sat, 22 Nov 2014 19:56:20 +0200 From: Konstantin Belousov <kostikbel@gmail.com> To: Christoph Hellwig <hch@infradead.org> Cc: FreeBSD Filesystems <freebsd-fs@freebsd.org> Subject: Re: RFC: patch to make d_fileno 64bits Message-ID: <20141122175620.GA17068@kib.kiev.ua> In-Reply-To: <20141122162201.GA27585@infradead.org> References: <20141121155754.GN17068@kib.kiev.ua> <420608613.5215411.1416613552066.JavaMail.root@uoguelph.ca> <20141122153427.GW17068@kib.kiev.ua> <20141122162201.GA27585@infradead.org>
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On Sat, Nov 22, 2014 at 08:22:01AM -0800, Christoph Hellwig wrote: > On Sat, Nov 22, 2014 at 05:34:27PM +0200, Konstantin Belousov wrote: > > For syscalls 156 and 196 (and some more), the converter must be written > > in the vfs_syscalls.c which translates the new dirents into old dirents, > > at the level of best efforts. > > FYI, you might want to look at the high level construct we use for that > in Linux, where we pass a function pointer to format the dirent to the > VOP_READDIR equivalent. The function pointer is passed by the caller > and can format all kinds of different dirent stuctures. This hasn't > just been helpful for the 64bit ino dirent transition, but also for > foreign OS compatibility layers and in-kernel consumers like nfsd. Yes, this is very promising approach, I agree. Thank you for the pointer.
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