Messages in this thread | | | Date | Thu, 30 Jul 2020 17:17:01 +0100 | From | Al Viro <> | Subject | Re: [PATCH 22/23] fs: default to generic_file_splice_read for files having ->read_iter |
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On Thu, Jul 30, 2020 at 05:20:46PM +0200, Christoph Hellwig wrote:
> Fortunately I think the fix is pretty easy - remove the special pipe > zero copy optimization from copy_page_to_iter, and just have the > callers actually want it because they have pagecache or similar > refcountable pages use it explicitly for the ITER_PIPE case. That gives > us a safe default with an opt-in into the optimized variant. I'm > currently auditing all the users of for how it is used and that looks > pretty promising.
Huh? What does that have to do with anything?
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