Messages in this thread | | | Subject | Re: Unexpected splice "always copy" behavior observed | From | Miklos Szeredi <> | Date | Wed, 19 May 2010 17:28:38 +0200 |
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On Wed, 19 May 2010, Linus Torvalds wrote: > The real limitation is likely always going to be the fact that it has to > be page-aligned and a full page. For a lot of splice inputs, that simply > won't be the case, and you'll end up copying for alignment reasons anyway.
Another limitation I found while splicing from one file to another is that stealing from the source file's page cache does not always succeed. This turned out to be because of a reference from the lru cache for freshly read pages. I'm not sure how this could be fixed.
Miklos
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