commit b311e921b385b5a848f0806df16276aca1ecae07
author Robert P. J. Day <rpjday@mindspring.com> Tue Oct 16 23:29:32 2007 -0700
committer Linus Torvalds <torvalds@woody.linux-foundation.org> Wed Oct 17 08:42:56 2007 -0700
tree 957947e319b23150ddbbf7db52f9bdd24b6cdba5
parent d9aacccf457d07d729cfc7bf20ff0c7428357a9f

Add a "rounddown_pow_of_two" routine to log2.h

To go along with the existing "roundup_pow_of_two" routine, add one for
rounding down since that operation appears to crop up on a regular basis in
the source tree.

[m.kozlowski@tuxland.pl: fix unbalanced parentheses]
Signed-off-by: Robert P. J. Day <rpjday@mindspring.com>
Signed-off-by: Mariusz Kozlowski <m.kozlowski@tuxland.pl>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>