Messages in this thread |  | | Date | Sat, 24 Jul 2021 01:52:06 +0000 | From | Al Viro <> | Subject | Re: [PATCH v3 1/7] iov_iter: Introduce fault_in_iov_iter helper |
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On Fri, Jul 23, 2021 at 10:58:34PM +0200, Andreas Gruenbacher wrote: > Introduce a new fault_in_iov_iter helper for manually faulting in an iterator. > Other than fault_in_pages_writeable(), this function is non-destructive. > > We'll use fault_in_iov_iter in gfs2 once we've determined that the iterator > passed to .read_iter or .write_iter isn't in memory.
Hmm... I suspect that this is going to be much heavier for read access than the existing variant. Do we ever want it for anything other than writes?
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