Messages in this thread | | | Date | Fri, 29 May 2020 22:06:48 +0100 | From | Al Viro <> | Subject | Re: [PATCH 2/2] dlmfs: convert dlmfs_file_read() to copy_to_user() |
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On Fri, May 29, 2020 at 01:57:36PM -0700, Linus Torvalds wrote:
> > All jokes aside, when had we (or anybody else, really) _not_ gotten > > into trouble when passing structs across the kernel boundary? Sure, > > sometimes you have to (stat, for example), but just look at the amount > > of PITA stat() has spawned... > > I'd rather see the struct than some ugly manual address calculations > and casts... > > Because that's fundamentally what a struct _is_, after all.
Sure; the bad idea I was refering to had been to pass the arguments from userland that way, not the syntax used for it. And it's obviously cast in stone by now - userland ABI and all such...
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