Re: Users locking memory using futexes

[Jamie Lokier]

Perez-Gonzalez, Inaky wrote:
> Good thing is - I just found out after reading twice - that FUTEX_FD does
> not lock the page in memory, so that is one case less to worry about. 

Oh yes it does - the page isn't unpinned until wakeup or close.
See where it says in futex_fd():

	page = NULL;
out:
	if (page)
		unpin_page(page);

Rusty's got a good point about pipe() though.

Btw, maybe GnuPG can use this "feature" to lock it's crypto memory in RAM :)

-- Jamie