On Tue, Dec 02, 2014 at 02:42:00PM -0800, Andrew Morton wrote:

The question is whether a simpler approach such as fincore() will be
sufficient.

For many use cases in Samba, fincore will probably be
enough. But Windows clients become more and more
multi-threaded, so Samba sees multiple parallel active read
requests. Samba's core SMB processing engine is single
threaded, and if due to that race we get blocked, more than
one data stream will be affected. We might make it an option
to use the fincore alternative, but I don't see it as a
default. The default will be the strict threadpool.

With best regards,

Volker Lendecke

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