Re: Unexpected splice "always copy" behavior observed

Miklos Szeredi
2010-05-19T15:29:19Z

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