Additional parameter to allow keeping an entropy reserve in the input pool.
Groundwork for proper /dev/urandom vs /dev/random starvation prevention.
Signed-off-by: Matt Mackall <mpm@selenic.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>